TY  - CONF
AU  - Savić, Slavica M.
AU  - Vojisavljević, Katarina
AU  - Počuča-Nešić, Milica
AU  - Knežević, Nikola
AU  - Mladenović, Minja
AU  - Đokić, Veljko
AU  - Branković, Zorica
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6103
AB  - Over the past decade, the interest for fabrication of mesoporous metal oxides
has been increased, and that draw attention globally on fabrication and designing
efficient humidity sensors based on these materials. Their unique properties like
high surface area, large pore volume and interconnected pore channels provide
easier adsorption and facile transportation of water molecules across their surfaces.
Nanocasting as technique based on various silica hard templates is one of usually
utilized and efficient methods for processing of such materials.
Silica SBA-15 as a template is currently obtaining exclusive attention in
applications like photocatalysis, sensing, drug delivery and nanomaterials
fabrication since it has high surface area, pore volume, excellent thermal stability
and distinctive interconnectivity of its tunable pore channels. In this work, we used
SBA-15 as a hard template for production of SnO2 humidity sensor. SBA-15
assisted mesoporous SnO2 has been synthesized using incipient wet impregnation
process, consisting of two loading/calcination steps to fill up 15 % of the total pore
volume of template with SnO2, followed by template etching with 2M NaOH.
A few micron thick SnO2 film has been fabricated by applying the paste by the
doctor blade applicator onto alumina substrate provided with interdigitated Pt/Ag
electrodes. The sensor response of the film towards humidity was tested measuring
the change of the complex impedance of the sample exposed to a humid climate
chamber environment with the relative humidity, RH ranging from 40 % to 90 % at
25 °C and from 30 % to 90 % at 50 °C. This study demonstrated that nanocast SnO2
possesses sufficient quality to be used as a material for fabrication of high
performance humidity sensors.
PB  - Belgrade : Institute for Multidisciplinary Research
C3  - Programme and the Book of Abstracts / 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia
T1  - SBA-15 Assisted SnO2 Humidity Sensor
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6103
ER  - 

@conference{
author = "Savić, Slavica M. and Vojisavljević, Katarina and Počuča-Nešić, Milica and Knežević, Nikola and Mladenović, Minja and Đokić, Veljko and Branković, Zorica",
year = "2019",
abstract = "Over the past decade, the interest for fabrication of mesoporous metal oxides
has been increased, and that draw attention globally on fabrication and designing
efficient humidity sensors based on these materials. Their unique properties like
high surface area, large pore volume and interconnected pore channels provide
easier adsorption and facile transportation of water molecules across their surfaces.
Nanocasting as technique based on various silica hard templates is one of usually
utilized and efficient methods for processing of such materials.
Silica SBA-15 as a template is currently obtaining exclusive attention in
applications like photocatalysis, sensing, drug delivery and nanomaterials
fabrication since it has high surface area, pore volume, excellent thermal stability
and distinctive interconnectivity of its tunable pore channels. In this work, we used
SBA-15 as a hard template for production of SnO2 humidity sensor. SBA-15
assisted mesoporous SnO2 has been synthesized using incipient wet impregnation
process, consisting of two loading/calcination steps to fill up 15 % of the total pore
volume of template with SnO2, followed by template etching with 2M NaOH.
A few micron thick SnO2 film has been fabricated by applying the paste by the
doctor blade applicator onto alumina substrate provided with interdigitated Pt/Ag
electrodes. The sensor response of the film towards humidity was tested measuring
the change of the complex impedance of the sample exposed to a humid climate
chamber environment with the relative humidity, RH ranging from 40 % to 90 % at
25 °C and from 30 % to 90 % at 50 °C. This study demonstrated that nanocast SnO2
possesses sufficient quality to be used as a material for fabrication of high
performance humidity sensors.",
publisher = "Belgrade : Institute for Multidisciplinary Research",
journal = "Programme and the Book of Abstracts / 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia",
title = "SBA-15 Assisted SnO2 Humidity Sensor",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6103"
}

Savić, S. M., Vojisavljević, K., Počuča-Nešić, M., Knežević, N., Mladenović, M., Đokić, V.,& Branković, Z.. (2019). SBA-15 Assisted SnO2 Humidity Sensor. in Programme and the Book of Abstracts / 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research..
https://hdl.handle.net/21.15107/rcub_technorep_6103

Savić SM, Vojisavljević K, Počuča-Nešić M, Knežević N, Mladenović M, Đokić V, Branković Z. SBA-15 Assisted SnO2 Humidity Sensor. in Programme and the Book of Abstracts / 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia. 2019;.
https://hdl.handle.net/21.15107/rcub_technorep_6103 .

Savić, Slavica M., Vojisavljević, Katarina, Počuča-Nešić, Milica, Knežević, Nikola, Mladenović, Minja, Đokić, Veljko, Branković, Zorica, "SBA-15 Assisted SnO2 Humidity Sensor" in Programme and the Book of Abstracts / 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia (2019),
https://hdl.handle.net/21.15107/rcub_technorep_6103 .

TY  - CONF
AU  - Savić, Slavica
AU  - Vojisavljević, Katarina
AU  - Počuča Nešić, Milica
AU  - Knežević, Nikola
AU  - Đokić, Veljko
AU  - Ribić, Vesna
AU  - Branković, Goran
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6111
AB  - This work presents the fabrication of humidity sensor based on SnO2 sensing material derived by the nanocasting process using hydrothermally obtained KIT-5 as a hard template.
In a typical wet impregnation process, the infiltration of Sn precursor into mesoporous silica KIT-5, and later evaporation of the solvent were conducted to fill pores to 15 % of the template pore volume. The calcination and removal of the template were performed to obtain the desired mesoporous SnO2. The obtained powder (P) was mixed with a 10 % ethyl-cellulose in α- terpineol solution (S) and acetic acid (A) in the weight ratio P:S:A=7:69.7:23.3 to form a homogeneous paste which was further deposited by doctor blade technique onto alumina substrate with screen printed Pt/Ag electrodes. The film was subjected to a specific drying regime and finally calcined at 550 °C for 5 h.
The obtained SnO2 nanoparticles as well KIT-5 template were characterized using X-ray diffraction (XRD) spectroscopy, Brunauer–Emmett–Teller (BET) analysis and Transmission Electron Microscopy (TEM). Cross section and surface morphology of SnO2 film were characterized by Field Emission Scanning Electron Microscopy (FESEM). The humidity sensing properties of the mesoporous SnO2 sensor were investigated in a JEIO TECH TH-KE-025 temperature and humidity climatic chamber in the range 30–90 % RH. Complex impedance spectra of the as-fabricated sensor were analyzed at room temperature and 50 °C with a HIOKI 3532-50 LCR HiTESTER in a frequency range 42 Hz - 1 MHz.
Nitrogen adsorption isotherms of KIT-5 showed high specific surface area of 610 m2g-1 and average pore diameter of 5.2 nm while those values for SnO2 sample were 33 m2g-1 and 19.9 nm respectively. Even though that mesoporous ordering of nanocasted negative replica was observed by TEM, the presence of agglomerates in SnO2, as well as the relatively low specific surface area of 33 m2g-1, confirm its partial degradation. Diffraction patterns from TEM display well-defined rings typical for cassiterite SnO2. The impedance measured at 42 Hz, at room temperature, and in the range 40-90% RH reduced 509 times, while at 50 °C it reduced 48 times. The sensor exhibited quick response (5 s) and recovery time (16 s) when it exposed to humidity change from 37% RH to 90% RH, and relatively low hysteresis of 3.2% observed at 40% RH and at room temperature showing its promising capacity as a humidity sensor.
PB  - Societa ceramica italiana
PB  - Politecnico di Torino
C3  - Abstract Book / XVI Conference and Exhibition of the European Ceramic Society XVI ECerS Conference, Torino, 16-20 June 2019
T1  - Nanocasting Synthesis of Mesoporous SnO2 for Humidity Sensor Application
SP  - 764
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6111
ER  - 

@conference{
author = "Savić, Slavica and Vojisavljević, Katarina and Počuča Nešić, Milica and Knežević, Nikola and Đokić, Veljko and Ribić, Vesna and Branković, Goran",
year = "2019",
abstract = "This work presents the fabrication of humidity sensor based on SnO2 sensing material derived by the nanocasting process using hydrothermally obtained KIT-5 as a hard template.
In a typical wet impregnation process, the infiltration of Sn precursor into mesoporous silica KIT-5, and later evaporation of the solvent were conducted to fill pores to 15 % of the template pore volume. The calcination and removal of the template were performed to obtain the desired mesoporous SnO2. The obtained powder (P) was mixed with a 10 % ethyl-cellulose in α- terpineol solution (S) and acetic acid (A) in the weight ratio P:S:A=7:69.7:23.3 to form a homogeneous paste which was further deposited by doctor blade technique onto alumina substrate with screen printed Pt/Ag electrodes. The film was subjected to a specific drying regime and finally calcined at 550 °C for 5 h.
The obtained SnO2 nanoparticles as well KIT-5 template were characterized using X-ray diffraction (XRD) spectroscopy, Brunauer–Emmett–Teller (BET) analysis and Transmission Electron Microscopy (TEM). Cross section and surface morphology of SnO2 film were characterized by Field Emission Scanning Electron Microscopy (FESEM). The humidity sensing properties of the mesoporous SnO2 sensor were investigated in a JEIO TECH TH-KE-025 temperature and humidity climatic chamber in the range 30–90 % RH. Complex impedance spectra of the as-fabricated sensor were analyzed at room temperature and 50 °C with a HIOKI 3532-50 LCR HiTESTER in a frequency range 42 Hz - 1 MHz.
Nitrogen adsorption isotherms of KIT-5 showed high specific surface area of 610 m2g-1 and average pore diameter of 5.2 nm while those values for SnO2 sample were 33 m2g-1 and 19.9 nm respectively. Even though that mesoporous ordering of nanocasted negative replica was observed by TEM, the presence of agglomerates in SnO2, as well as the relatively low specific surface area of 33 m2g-1, confirm its partial degradation. Diffraction patterns from TEM display well-defined rings typical for cassiterite SnO2. The impedance measured at 42 Hz, at room temperature, and in the range 40-90% RH reduced 509 times, while at 50 °C it reduced 48 times. The sensor exhibited quick response (5 s) and recovery time (16 s) when it exposed to humidity change from 37% RH to 90% RH, and relatively low hysteresis of 3.2% observed at 40% RH and at room temperature showing its promising capacity as a humidity sensor.",
publisher = "Societa ceramica italiana, Politecnico di Torino",
journal = "Abstract Book / XVI Conference and Exhibition of the European Ceramic Society XVI ECerS Conference, Torino, 16-20 June 2019",
title = "Nanocasting Synthesis of Mesoporous SnO2 for Humidity Sensor Application",
pages = "764",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6111"
}

Savić, S., Vojisavljević, K., Počuča Nešić, M., Knežević, N., Đokić, V., Ribić, V.,& Branković, G.. (2019). Nanocasting Synthesis of Mesoporous SnO2 for Humidity Sensor Application. in Abstract Book / XVI Conference and Exhibition of the European Ceramic Society XVI ECerS Conference, Torino, 16-20 June 2019
Societa ceramica italiana., 764.
https://hdl.handle.net/21.15107/rcub_technorep_6111

Savić S, Vojisavljević K, Počuča Nešić M, Knežević N, Đokić V, Ribić V, Branković G. Nanocasting Synthesis of Mesoporous SnO2 for Humidity Sensor Application. in Abstract Book / XVI Conference and Exhibition of the European Ceramic Society XVI ECerS Conference, Torino, 16-20 June 2019. 2019;:764.
https://hdl.handle.net/21.15107/rcub_technorep_6111 .

Savić, Slavica, Vojisavljević, Katarina, Počuča Nešić, Milica, Knežević, Nikola, Đokić, Veljko, Ribić, Vesna, Branković, Goran, "Nanocasting Synthesis of Mesoporous SnO2 for Humidity Sensor Application" in Abstract Book / XVI Conference and Exhibition of the European Ceramic Society XVI ECerS Conference, Torino, 16-20 June 2019 (2019):764,
https://hdl.handle.net/21.15107/rcub_technorep_6111 .

TY  - JOUR
AU  - Knežević, Nikola Ž.
AU  - Đorđević, Sanja
AU  - Kojić, Vesna
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4156
AB  - Suramin (SUR) is a known drug for treating parasitic infections though research studies and some clinical trials have shown its applicability for a plethora of other diseases. Herein we report on a novel SUR nanocarrier for the drug delivery to cells. We synthesized periodic mesoporous organosilica nanoparticles with spherical morphology, having mean diameter of 240 nm and high surface area (778 m(2)/g). The material's surface is modified with an amine-containing organic moiety N-[3-(Trimethoxysilyl)propyl]ethylenediamine (DA), followed by surface attachment with the drug. The rate of SUR release in physiological condition was low, though in vitro experiments on MRC-5 cell line demonstrate effective delivery of the drug to the cells and low toxicity of the materials without the adsorbed drug. These results are promising for opening new treatment strategies with SUR-bearing nanocarriers, with high efficiency and low adverse effects on healthy tissues.
PB  - MDPI, Basel
T2  - Inorganics
T1  - Functionalized Periodic Mesoporous Organosilica Nanoparticles for Loading and Delivery of Suramin
IS  - 2
VL  - 7
DO  - 10.3390/inorganics7020016
ER  - 

@article{
author = "Knežević, Nikola Ž. and Đorđević, Sanja and Kojić, Vesna and Janaćković, Đorđe",
year = "2019",
abstract = "Suramin (SUR) is a known drug for treating parasitic infections though research studies and some clinical trials have shown its applicability for a plethora of other diseases. Herein we report on a novel SUR nanocarrier for the drug delivery to cells. We synthesized periodic mesoporous organosilica nanoparticles with spherical morphology, having mean diameter of 240 nm and high surface area (778 m(2)/g). The material's surface is modified with an amine-containing organic moiety N-[3-(Trimethoxysilyl)propyl]ethylenediamine (DA), followed by surface attachment with the drug. The rate of SUR release in physiological condition was low, though in vitro experiments on MRC-5 cell line demonstrate effective delivery of the drug to the cells and low toxicity of the materials without the adsorbed drug. These results are promising for opening new treatment strategies with SUR-bearing nanocarriers, with high efficiency and low adverse effects on healthy tissues.",
publisher = "MDPI, Basel",
journal = "Inorganics",
title = "Functionalized Periodic Mesoporous Organosilica Nanoparticles for Loading and Delivery of Suramin",
number = "2",
volume = "7",
doi = "10.3390/inorganics7020016"
}

Knežević, N. Ž., Đorđević, S., Kojić, V.,& Janaćković, Đ.. (2019). Functionalized Periodic Mesoporous Organosilica Nanoparticles for Loading and Delivery of Suramin. in Inorganics
MDPI, Basel., 7(2).
https://doi.org/10.3390/inorganics7020016

Knežević NŽ, Đorđević S, Kojić V, Janaćković Đ. Functionalized Periodic Mesoporous Organosilica Nanoparticles for Loading and Delivery of Suramin. in Inorganics. 2019;7(2).
doi:10.3390/inorganics7020016 .

Knežević, Nikola Ž., Đorđević, Sanja, Kojić, Vesna, Janaćković, Đorđe, "Functionalized Periodic Mesoporous Organosilica Nanoparticles for Loading and Delivery of Suramin" in Inorganics, 7, no. 2 (2019),
https://doi.org/10.3390/inorganics7020016 . .

TY  - JOUR
AU  - Knežević, Nikola Ž.
AU  - Ilić, Nebojša
AU  - Đokić, Veljko
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3847
AB  - Mesoporous silica nanoparticles (MSN) and periodic mesoporous organosilica nanoparticles containing bridging benzene (PMOBTB) and ethane (PMOBTE) moieties are synthesized, characterized, and evaluated for application in skin protection from UVA/UVB sun irradiation. Furthermore, the influence of surface functionalization with chelating 3-(2-aminoethylamino)propylsilane and Zn2+ ions on the UV-blocking ability of MSN is evaluated, along with the photostability and capability of the synthesized nanomaterials to carry avobenzone, a known UV-absorbing agent. The obtained results reveal promising characteristics of MSN and PMO materials with regard to their potential for sunscreen applications, which could be beneficial in terms of alleviating concerns about health and environmental hazards of sunscreen ingredients.
PB  - Amer Chemical Soc, Washington
T2  - ACS Applied Materials & Interfaces
T1  - Mesoporous Silica and Organosilica Nanomaterials as UV-Blocking Agents
EP  - 20236
IS  - 24
SP  - 20231
VL  - 10
DO  - 10.1021/acsami.8b04635
ER  - 

@article{
author = "Knežević, Nikola Ž. and Ilić, Nebojša and Đokić, Veljko and Petrović, Rada and Janaćković, Đorđe",
year = "2018",
abstract = "Mesoporous silica nanoparticles (MSN) and periodic mesoporous organosilica nanoparticles containing bridging benzene (PMOBTB) and ethane (PMOBTE) moieties are synthesized, characterized, and evaluated for application in skin protection from UVA/UVB sun irradiation. Furthermore, the influence of surface functionalization with chelating 3-(2-aminoethylamino)propylsilane and Zn2+ ions on the UV-blocking ability of MSN is evaluated, along with the photostability and capability of the synthesized nanomaterials to carry avobenzone, a known UV-absorbing agent. The obtained results reveal promising characteristics of MSN and PMO materials with regard to their potential for sunscreen applications, which could be beneficial in terms of alleviating concerns about health and environmental hazards of sunscreen ingredients.",
publisher = "Amer Chemical Soc, Washington",
journal = "ACS Applied Materials & Interfaces",
title = "Mesoporous Silica and Organosilica Nanomaterials as UV-Blocking Agents",
pages = "20236-20231",
number = "24",
volume = "10",
doi = "10.1021/acsami.8b04635"
}

Knežević, N. Ž., Ilić, N., Đokić, V., Petrović, R.,& Janaćković, Đ.. (2018). Mesoporous Silica and Organosilica Nanomaterials as UV-Blocking Agents. in ACS Applied Materials & Interfaces
Amer Chemical Soc, Washington., 10(24), 20231-20236.
https://doi.org/10.1021/acsami.8b04635

Knežević NŽ, Ilić N, Đokić V, Petrović R, Janaćković Đ. Mesoporous Silica and Organosilica Nanomaterials as UV-Blocking Agents. in ACS Applied Materials & Interfaces. 2018;10(24):20231-20236.
doi:10.1021/acsami.8b04635 .

Knežević, Nikola Ž., Ilić, Nebojša, Đokić, Veljko, Petrović, Rada, Janaćković, Đorđe, "Mesoporous Silica and Organosilica Nanomaterials as UV-Blocking Agents" in ACS Applied Materials & Interfaces, 10, no. 24 (2018):20231-20236,
https://doi.org/10.1021/acsami.8b04635 . .

TY  - JOUR
AU  - Knežević, Nikola Ž.
AU  - Kaluđerović, Goran N.
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5849
AB  - With the rapid expansion of nanoscience and nanotechnology in interdisciplinary fields, multifunctional nanomaterials have attracted particular attention. Recent advances in nanotherapeutics for cancer applications provided diverse groups of synthetic particles with defined cellular and biological functions. The advance of nanotechnology significantly increased the number of possibilities for the construction of diverse biological tools. Such materials are destined to be of great importance because of the opportunity to combine the biotechnological potential of nanoparticles together with the recognition, sensitivity and modulation of cellular pathways or genes when applied to living organisms. In this mini review three main types of Si-based nanomaterials are highlighted in the area of their application for therapy and imaging: porous silicon nanoparticles (pSiNPs), mesoporous silica nanoparticles (MSNs), focusing on their nanoconstructs containing coordination compounds, and periodic mesoporous silica nanoparticles (PMONPs). Moreover, a critical discussion on the research efforts in the construction of nanotheranostics is presented.
PB  - Royal Society of Chemistry
T2  - Nanoscale
T1  - Silicon-based nanotheranostics
EP  - 12829
IS  - 35
SP  - 12821
VL  - 9
DO  - 10.1039/c7nr04445c
ER  - 

@article{
author = "Knežević, Nikola Ž. and Kaluđerović, Goran N.",
year = "2017",
abstract = "With the rapid expansion of nanoscience and nanotechnology in interdisciplinary fields, multifunctional nanomaterials have attracted particular attention. Recent advances in nanotherapeutics for cancer applications provided diverse groups of synthetic particles with defined cellular and biological functions. The advance of nanotechnology significantly increased the number of possibilities for the construction of diverse biological tools. Such materials are destined to be of great importance because of the opportunity to combine the biotechnological potential of nanoparticles together with the recognition, sensitivity and modulation of cellular pathways or genes when applied to living organisms. In this mini review three main types of Si-based nanomaterials are highlighted in the area of their application for therapy and imaging: porous silicon nanoparticles (pSiNPs), mesoporous silica nanoparticles (MSNs), focusing on their nanoconstructs containing coordination compounds, and periodic mesoporous silica nanoparticles (PMONPs). Moreover, a critical discussion on the research efforts in the construction of nanotheranostics is presented.",
publisher = "Royal Society of Chemistry",
journal = "Nanoscale",
title = "Silicon-based nanotheranostics",
pages = "12829-12821",
number = "35",
volume = "9",
doi = "10.1039/c7nr04445c"
}

Knežević, N. Ž.,& Kaluđerović, G. N.. (2017). Silicon-based nanotheranostics. in Nanoscale
Royal Society of Chemistry., 9(35), 12821-12829.
https://doi.org/10.1039/c7nr04445c

Knežević NŽ, Kaluđerović GN. Silicon-based nanotheranostics. in Nanoscale. 2017;9(35):12821-12829.
doi:10.1039/c7nr04445c .

Knežević, Nikola Ž., Kaluđerović, Goran N., "Silicon-based nanotheranostics" in Nanoscale, 9, no. 35 (2017):12821-12829,
https://doi.org/10.1039/c7nr04445c . .

TY  - JOUR
AU  - Knežević, Nikola
AU  - Jimenez, Chiara Mauriello
AU  - Albino, Martin
AU  - Vukadinović, Aleksandar
AU  - Mraković, Ana
AU  - Illés, Erzsébet
AU  - Janaćković, Đorđe
AU  - Durand, Jean-Olivier
AU  - Sangregorio, Claudio
AU  - Peddis, Davide
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3626
AB  - Initial results en route toward construction of complex magnetic core-shell silica and organosilica nanotheranostics are presented. Magnetite nanoparticles are synthesized by three different methods and embedded within mesoporous silica and organosilica frameworks by different surfactant-templated procedures to produce three types of core-shell nanoparticles. Magnetite nanoparticles (15 nm in diameter) are embedded within mesoporous silica nanoparticles to produce cell-like material with predominantly one magnetite nuclei-resembling core per nanoparticle, with final particle diameter of ca. 150 nm, specific surface area of 573 m(2)/g and hexagonally structured tubular pores (2.6 nm predominant diameter), extended throughout the volume of nanoparticles. Two forms of spherical core-shell nanoparticles composed of magnetite cores embedded within mesoporous organosilica shells are also obtained by employing ethylene and ethane bridged organobisalkoxysilane precursors. The obtained nanomaterials are characterized by high surface area (978 and 820 m(2)/g), tubular pore morphology (2 and 2.8 nm predominant pore diameters), different diameters (386 and 100-200 nm), in case of ethylene- and ethane-composed organosilica shells, respectively. Different degree of agglomeration of magnetite nanoparticles was also observed in the obtained materials, and in the case of utilization of surfactant-pre-stabilized magnetite nanoparticles for the syntheses, their uniform and non-agglomerated distribution within the shells was noted.
PB  - Cambridge Univ Press, New York
T2  - Mrs Advances
T1  - Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures
EP  - 1045
IS  - 19-20
SP  - 1037
VL  - 2
DO  - 10.1557/adv.2017.69
ER  - 

@article{
author = "Knežević, Nikola and Jimenez, Chiara Mauriello and Albino, Martin and Vukadinović, Aleksandar and Mraković, Ana and Illés, Erzsébet and Janaćković, Đorđe and Durand, Jean-Olivier and Sangregorio, Claudio and Peddis, Davide",
year = "2017",
abstract = "Initial results en route toward construction of complex magnetic core-shell silica and organosilica nanotheranostics are presented. Magnetite nanoparticles are synthesized by three different methods and embedded within mesoporous silica and organosilica frameworks by different surfactant-templated procedures to produce three types of core-shell nanoparticles. Magnetite nanoparticles (15 nm in diameter) are embedded within mesoporous silica nanoparticles to produce cell-like material with predominantly one magnetite nuclei-resembling core per nanoparticle, with final particle diameter of ca. 150 nm, specific surface area of 573 m(2)/g and hexagonally structured tubular pores (2.6 nm predominant diameter), extended throughout the volume of nanoparticles. Two forms of spherical core-shell nanoparticles composed of magnetite cores embedded within mesoporous organosilica shells are also obtained by employing ethylene and ethane bridged organobisalkoxysilane precursors. The obtained nanomaterials are characterized by high surface area (978 and 820 m(2)/g), tubular pore morphology (2 and 2.8 nm predominant pore diameters), different diameters (386 and 100-200 nm), in case of ethylene- and ethane-composed organosilica shells, respectively. Different degree of agglomeration of magnetite nanoparticles was also observed in the obtained materials, and in the case of utilization of surfactant-pre-stabilized magnetite nanoparticles for the syntheses, their uniform and non-agglomerated distribution within the shells was noted.",
publisher = "Cambridge Univ Press, New York",
journal = "Mrs Advances",
title = "Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures",
pages = "1045-1037",
number = "19-20",
volume = "2",
doi = "10.1557/adv.2017.69"
}

Knežević, N., Jimenez, C. M., Albino, M., Vukadinović, A., Mraković, A., Illés, E., Janaćković, Đ., Durand, J., Sangregorio, C.,& Peddis, D.. (2017). Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures. in Mrs Advances
Cambridge Univ Press, New York., 2(19-20), 1037-1045.
https://doi.org/10.1557/adv.2017.69

Knežević N, Jimenez CM, Albino M, Vukadinović A, Mraković A, Illés E, Janaćković Đ, Durand J, Sangregorio C, Peddis D. Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures. in Mrs Advances. 2017;2(19-20):1037-1045.
doi:10.1557/adv.2017.69 .

Knežević, Nikola, Jimenez, Chiara Mauriello, Albino, Martin, Vukadinović, Aleksandar, Mraković, Ana, Illés, Erzsébet, Janaćković, Đorđe, Durand, Jean-Olivier, Sangregorio, Claudio, Peddis, Davide, "Synthesis and Characterization of Core-Shell Magnetic Mesoporous Silica and Organosilica Nanostructures" in Mrs Advances, 2, no. 19-20 (2017):1037-1045,
https://doi.org/10.1557/adv.2017.69 . .

TY  - JOUR
AU  - Knežević, Nikola Ž.
AU  - Mrdanović, Jasminka
AU  - Borisev, Ivana
AU  - Milenković, Sanja
AU  - Janaćković, Đorđe
AU  - Cunin, Frederique
AU  - Đorđević, Aleksandar
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3386
AB  - A novel cancer-targeting drug delivery system is constructed and characterized, based on folic acid-functionalized mesoporous silica nanoparticles with pore-loaded anticancer drug vinblastine and pore-blocking fullerenol molecules. The selective treatment efficacy based on targeting of cancer-verexpressed folate receptors is demonstrated by comparison of cell viability upon the treatment of healthy MRC-5, breast cancer MCF-7 and cervical cancer HeLa cells, which are known to differ in the amount of folate receptors on their surfaces.
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - Hydroxylated fullerene-capped, vinblastine-loaded folic acid-functionalized mesoporous silica nanoparticles for targeted anticancer therapy
EP  - 7065
IS  - 9
SP  - 7061
VL  - 6
DO  - 10.1039/c5ra22937e
ER  - 

@article{
author = "Knežević, Nikola Ž. and Mrdanović, Jasminka and Borisev, Ivana and Milenković, Sanja and Janaćković, Đorđe and Cunin, Frederique and Đorđević, Aleksandar",
year = "2016",
abstract = "A novel cancer-targeting drug delivery system is constructed and characterized, based on folic acid-functionalized mesoporous silica nanoparticles with pore-loaded anticancer drug vinblastine and pore-blocking fullerenol molecules. The selective treatment efficacy based on targeting of cancer-verexpressed folate receptors is demonstrated by comparison of cell viability upon the treatment of healthy MRC-5, breast cancer MCF-7 and cervical cancer HeLa cells, which are known to differ in the amount of folate receptors on their surfaces.",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "Hydroxylated fullerene-capped, vinblastine-loaded folic acid-functionalized mesoporous silica nanoparticles for targeted anticancer therapy",
pages = "7065-7061",
number = "9",
volume = "6",
doi = "10.1039/c5ra22937e"
}

Knežević, N. Ž., Mrdanović, J., Borisev, I., Milenković, S., Janaćković, Đ., Cunin, F.,& Đorđević, A.. (2016). Hydroxylated fullerene-capped, vinblastine-loaded folic acid-functionalized mesoporous silica nanoparticles for targeted anticancer therapy. in RSC Advances
Royal Society of Chemistry., 6(9), 7061-7065.
https://doi.org/10.1039/c5ra22937e

Knežević NŽ, Mrdanović J, Borisev I, Milenković S, Janaćković Đ, Cunin F, Đorđević A. Hydroxylated fullerene-capped, vinblastine-loaded folic acid-functionalized mesoporous silica nanoparticles for targeted anticancer therapy. in RSC Advances. 2016;6(9):7061-7065.
doi:10.1039/c5ra22937e .

Knežević, Nikola Ž., Mrdanović, Jasminka, Borisev, Ivana, Milenković, Sanja, Janaćković, Đorđe, Cunin, Frederique, Đorđević, Aleksandar, "Hydroxylated fullerene-capped, vinblastine-loaded folic acid-functionalized mesoporous silica nanoparticles for targeted anticancer therapy" in RSC Advances, 6, no. 9 (2016):7061-7065,
https://doi.org/10.1039/c5ra22937e . .

TY  - JOUR
AU  - Knežević, Nikola Ž.
AU  - Milenković, Sanja
AU  - Jović, Danica
AU  - Lazarević, Slavica
AU  - Mrđanović, Jasminka
AU  - Đorđević, Aleksandar
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3130
AB  - Novel nanocomposite containing fullerenol nanoparticles (FNP) and porous silica nanoparticles (PSNs) was constructed and characterized. The capability of FNP to serve as a pore-capping agent and for entrapping 9-aminoacridine (9-AA) inside the pores of the PSN material was also demonstrated. Nitrogen sorption measurements evidence the successful capping of the silica pores while thermogravimetric analysis of FNP loaded PSN indicates the existence of pore-loaded fullerenol molecules. Higher amount of the drug release was noted by exposing the material to weakly acidic conditions in comparison to physiological pH, which may find application in targeted treatment of weakly acidic tumor tissues.
PB  - Hindawi Ltd, London
T2  - Advances in Materials Science and Engineering
T1  - Fullerenol-Capped Porous Silica Nanoparticles for pH-Responsive Drug Delivery
VL  - 2015
DO  - 10.1155/2015/567350
ER  - 

@article{
author = "Knežević, Nikola Ž. and Milenković, Sanja and Jović, Danica and Lazarević, Slavica and Mrđanović, Jasminka and Đorđević, Aleksandar",
year = "2015",
abstract = "Novel nanocomposite containing fullerenol nanoparticles (FNP) and porous silica nanoparticles (PSNs) was constructed and characterized. The capability of FNP to serve as a pore-capping agent and for entrapping 9-aminoacridine (9-AA) inside the pores of the PSN material was also demonstrated. Nitrogen sorption measurements evidence the successful capping of the silica pores while thermogravimetric analysis of FNP loaded PSN indicates the existence of pore-loaded fullerenol molecules. Higher amount of the drug release was noted by exposing the material to weakly acidic conditions in comparison to physiological pH, which may find application in targeted treatment of weakly acidic tumor tissues.",
publisher = "Hindawi Ltd, London",
journal = "Advances in Materials Science and Engineering",
title = "Fullerenol-Capped Porous Silica Nanoparticles for pH-Responsive Drug Delivery",
volume = "2015",
doi = "10.1155/2015/567350"
}

Knežević, N. Ž., Milenković, S., Jović, D., Lazarević, S., Mrđanović, J.,& Đorđević, A.. (2015). Fullerenol-Capped Porous Silica Nanoparticles for pH-Responsive Drug Delivery. in Advances in Materials Science and Engineering
Hindawi Ltd, London., 2015.
https://doi.org/10.1155/2015/567350

Knežević NŽ, Milenković S, Jović D, Lazarević S, Mrđanović J, Đorđević A. Fullerenol-Capped Porous Silica Nanoparticles for pH-Responsive Drug Delivery. in Advances in Materials Science and Engineering. 2015;2015.
doi:10.1155/2015/567350 .

Knežević, Nikola Ž., Milenković, Sanja, Jović, Danica, Lazarević, Slavica, Mrđanović, Jasminka, Đorđević, Aleksandar, "Fullerenol-Capped Porous Silica Nanoparticles for pH-Responsive Drug Delivery" in Advances in Materials Science and Engineering, 2015 (2015),
https://doi.org/10.1155/2015/567350 . .