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 M.
Gilić, Martina
Šević, Dragutin M.
Rabasović, Maja S.
Radojević, Vesna
Чланак у часопису (Објављена верзија)
,
© 2019
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. © 2019
Кључне речи:
Quantum dots / CdSe/ZnS / Poly(methyl methacrylate) / PhotoluminescenceИзвор:
Optical Materials, 2019, 92, 405-410Финансирање / пројекти:
- Развој опреме и процеса добијања полимерних композитних материјала са унапред дефинисаним функционалним својствима (RS-34011)
- Оптоелектронски нанодимензиони системи - пут ка примени (RS-45003)
- Синтеза, развој технологија добијања и примена наноструктурних мултифункционалних материјала дефинисаних својстава (RS-45019)
- Физика судара и фотопроцеса у атомским, (био)молекулским и нанодимензионим системима (RS-171020)
DOI: 10.1016/j.optmat.2019.05.012
ISSN: 0925-3467; 1873-1252
WoS: 000470938900055
Scopus: 2-s2.0-85065619792
URI
https://linkinghub.elsevier.com/retrieve/pii/S0925346719303131https://vinar.vin.bg.ac.rs/handle/123456789/8195
Колекције
Институција/група
VinčaTY - JOUR AU - Abozaid, Rouaida Mohamed AU - Lazarević, Zorica Ž. AU - Radović, Ivana M. AU - Gilić, Martina AU - Šević, Dragutin M. AU - Rabasović, Maja S. AU - Radojević, Vesna PY - 2019 UR - https://linkinghub.elsevier.com/retrieve/pii/S0925346719303131 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8195 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. © 2019 T2 - Optical Materials T1 - Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications VL - 92 SP - 405 EP - 410 DO - 10.1016/j.optmat.2019.05.012 ER -
@article{ author = "Abozaid, Rouaida Mohamed and Lazarević, Zorica Ž. and Radović, Ivana M. and Gilić, Martina and Šević, 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. © 2019", journal = "Optical Materials", title = "Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications", volume = "92", pages = "405-410", doi = "10.1016/j.optmat.2019.05.012" }
Abozaid, R. M., Lazarević, Z. Ž., Radović, I. M., Gilić, M., Šević, 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, 92, 405-410. https://doi.org/10.1016/j.optmat.2019.05.012
Abozaid RM, Lazarević ZŽ, Radović IM, Gilić M, Šević 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 M., Gilić, Martina, Šević, 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 . .