Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications
Само за регистроване кориснике
2019
Аутори
Abozaid, Rouaida MohamedLazarević, Zorica Ž.
Radović, Ivana
Gilić, Martina
Sević, Dragutin M.
Rabasović, Maja S.
Radojević, Vesna
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Processing and characterization of polymer nanocomposites based on poly (methyl methacrylate) (PMMA) matrix with embedded core-shell CdSe/ZnS quantum dots (QD's) were presented in this work. The aim is to preserve the optical activity of QD's in nanocomposite processing with improved mechanical properties. The modification of QD's CdSe/ZnS-PMMA interface was achieved with 3-mercaptopropyltrimethoxysilane (MPTMS). Nanocomposites were processed by solution casting. The samples of pure PMMA, and composites with unmodified and silane modified QD's CdSe/ZnS were processed. FTIR analysis revealed modification of QD's with silane and characteristic bonding with PMMA matrix. Raman spectrum confirms a presence of alloyed layer at the core-shell interface. Time-resolved laser induced fluorescence measurements confirmed slight blue shift in QD's CdSe/ZnS-PMMA composite without interface modification, while there was a slight red shift with modified particles. Oxidation effects in quantum dots wer...e removed with the use of PMMA as a host, and the core remained active, which was confirmed with FTIR analysis and time-resolved laser induced fluorescence measurements.
Кључне речи:
Quantum dots / CdSe/ZnS / Poly(methyl methacrylate) / PhotoluminescenceИзвор:
Optical Materials, 2019, 92, 405-410Издавач:
- Elsevier Science Bv, Amsterdam
Финансирање / пројекти:
- Развој опреме и процеса добијања полимерних композитних материјала са унапред дефинисаним функционалним својствима (RS-MESTD-Technological Development (TD or TR)-34011)
- Оптоелектронски нанодимензиони системи - пут ка примени (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45003)
- Синтеза, развој технологија добијања и примена наноструктурних мултифункционалних материјала дефинисаних својстава (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45019)
- Физика судара и фотопроцеса у атомским, (био)молекулским и нанодимензионим системима (RS-MESTD-Basic Research (BR or ON)-171020)
DOI: 10.1016/j.optmat.2019.05.012
ISSN: 0925-3467
WoS: 000470938900055
Scopus: 2-s2.0-85065619792
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Abozaid, Rouaida Mohamed AU - Lazarević, Zorica Ž. AU - Radović, Ivana AU - Gilić, Martina AU - Sević, Dragutin M. AU - Rabasović, Maja S. AU - Radojević, Vesna PY - 2019 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4225 AB - Processing and characterization of polymer nanocomposites based on poly (methyl methacrylate) (PMMA) matrix with embedded core-shell CdSe/ZnS quantum dots (QD's) were presented in this work. The aim is to preserve the optical activity of QD's in nanocomposite processing with improved mechanical properties. The modification of QD's CdSe/ZnS-PMMA interface was achieved with 3-mercaptopropyltrimethoxysilane (MPTMS). Nanocomposites were processed by solution casting. The samples of pure PMMA, and composites with unmodified and silane modified QD's CdSe/ZnS were processed. FTIR analysis revealed modification of QD's with silane and characteristic bonding with PMMA matrix. Raman spectrum confirms a presence of alloyed layer at the core-shell interface. Time-resolved laser induced fluorescence measurements confirmed slight blue shift in QD's CdSe/ZnS-PMMA composite without interface modification, while there was a slight red shift with modified particles. Oxidation effects in quantum dots were removed with the use of PMMA as a host, and the core remained active, which was confirmed with FTIR analysis and time-resolved laser induced fluorescence measurements. PB - Elsevier Science Bv, Amsterdam T2 - Optical Materials T1 - Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications EP - 410 SP - 405 VL - 92 DO - 10.1016/j.optmat.2019.05.012 ER -
@article{ author = "Abozaid, Rouaida Mohamed and Lazarević, Zorica Ž. and Radović, Ivana and Gilić, Martina and Sević, Dragutin M. and Rabasović, Maja S. and Radojević, Vesna", year = "2019", abstract = "Processing and characterization of polymer nanocomposites based on poly (methyl methacrylate) (PMMA) matrix with embedded core-shell CdSe/ZnS quantum dots (QD's) were presented in this work. The aim is to preserve the optical activity of QD's in nanocomposite processing with improved mechanical properties. The modification of QD's CdSe/ZnS-PMMA interface was achieved with 3-mercaptopropyltrimethoxysilane (MPTMS). Nanocomposites were processed by solution casting. The samples of pure PMMA, and composites with unmodified and silane modified QD's CdSe/ZnS were processed. FTIR analysis revealed modification of QD's with silane and characteristic bonding with PMMA matrix. Raman spectrum confirms a presence of alloyed layer at the core-shell interface. Time-resolved laser induced fluorescence measurements confirmed slight blue shift in QD's CdSe/ZnS-PMMA composite without interface modification, while there was a slight red shift with modified particles. Oxidation effects in quantum dots were removed with the use of PMMA as a host, and the core remained active, which was confirmed with FTIR analysis and time-resolved laser induced fluorescence measurements.", publisher = "Elsevier Science Bv, Amsterdam", journal = "Optical Materials", title = "Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications", pages = "410-405", volume = "92", doi = "10.1016/j.optmat.2019.05.012" }
Abozaid, R. M., Lazarević, Z. Ž., Radović, I., Gilić, M., Sević, D. M., Rabasović, M. S.,& Radojević, V.. (2019). Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications. in Optical Materials Elsevier Science Bv, Amsterdam., 92, 405-410. https://doi.org/10.1016/j.optmat.2019.05.012
Abozaid RM, Lazarević ZŽ, Radović I, Gilić M, Sević DM, Rabasović MS, Radojević V. Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications. in Optical Materials. 2019;92:405-410. doi:10.1016/j.optmat.2019.05.012 .
Abozaid, Rouaida Mohamed, Lazarević, Zorica Ž., Radović, Ivana, Gilić, Martina, Sević, Dragutin M., Rabasović, Maja S., Radojević, Vesna, "Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications" in Optical Materials, 92 (2019):405-410, https://doi.org/10.1016/j.optmat.2019.05.012 . .