Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications
Authorized Users Only
2019
Authors
Abozaid, Rouaida MohamedLazarević, Zorica Ž.
Radović, Ivana
Gilić, Martina
Šević, Dragutin M.

Rabasović, Maja S.

Radojević, Vesna

Article (Published version)

© 2019
Metadata
Show full item recordAbstract
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
Keywords:
Quantum dots / CdSe/ZnS / Poly(methyl methacrylate) / PhotoluminescenceSource:
Optical Materials, 2019, 92, 405-410Funding / projects:
- Predefined functional properties polymer composite materials processes and equipment development (RS-34011)
- Optoelectronics nanodimension systems - the rout towards applications (RS-45003)
- Synthesis, processing and applications of nanostructured multifunctional materials with defined properties (RS-45019)
- Physics of collisions and photo processes in atomic, (bio)molecular and nanosized systems (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
Collections
Institution/Community
VinčaTY - JOUR AU - Abozaid, Rouaida Mohamed AU - Lazarević, Zorica Ž. AU - Radović, Ivana 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 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., 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 I, 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, 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 . .