Effects of low gamma irradiation dose on the photoluminescence properties of graphene quantum dots
Само за регистроване кориснике
2016
Аутори
Jovanović, Svetlana P.Marković, Zoran M.
Budimir, Milica
Špitalsky, Zdenko
Vidoeski, Bojan
Todorović-Marković, Biljana
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
We prepared graphene quantum dots (GQDs) using electrochemical approach. The luminescent properties of GQDs at various excitation wavelengths are examined. In order to study the possibility to improve these properties, we applied a low dose of gamma irradiation (15 kGy) on GQDs dissolved in two media: water and 4 % isopropyl alcohol solution. Upon gamma irradiation of water, various free radical species are formed and they usually cause oxidation. In the presence of isopropyl alcohol in water, during irradiation, oxygen contained radicals are quenched and only hydrogen radicals can survive and reduce the material exposed to irradiation. Morphology of GQDs is examined by atomic force and transmission electron microscopy. After gamma irradiation the increase of photoluminescence was noticed for both GQD samples. A higher intensity of photoluminescence is detected for GQDs irradiated in 4 % isopropyl alcohol solution. This result shows that further increase of gamma irradiation dose has a... great potential for improvement of luminescence properties of GQDs.
Кључне речи:
Graphene quantum dots / Photoluminescence / Gamma irradiation / Atomic force microscopyИзвор:
Optical and Quantum Electronics, 2016, 48, 4Издавач:
- Springer
Финансирање / пројекти:
- Танки слојеви једнослојних угљеничних нанотуба и графена за примену у електроници (RS-MESTD-Basic Research (BR or ON)-172003)
- bilateral collaboration project Serbia-Slovakia [SK-SRB-2013-0044 (451-03-545/2015-09/07)]
DOI: 10.1007/s11082-016-0516-z
ISSN: 0306-8919; 1572-817X
WoS: 000374106400001
Scopus: 2-s2.0-84962476946
Колекције
Институција/група
VinčaTY - JOUR AU - Jovanović, Svetlana P. AU - Marković, Zoran M. AU - Budimir, Milica AU - Špitalsky, Zdenko AU - Vidoeski, Bojan AU - Todorović-Marković, Biljana PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1018 AB - We prepared graphene quantum dots (GQDs) using electrochemical approach. The luminescent properties of GQDs at various excitation wavelengths are examined. In order to study the possibility to improve these properties, we applied a low dose of gamma irradiation (15 kGy) on GQDs dissolved in two media: water and 4 % isopropyl alcohol solution. Upon gamma irradiation of water, various free radical species are formed and they usually cause oxidation. In the presence of isopropyl alcohol in water, during irradiation, oxygen contained radicals are quenched and only hydrogen radicals can survive and reduce the material exposed to irradiation. Morphology of GQDs is examined by atomic force and transmission electron microscopy. After gamma irradiation the increase of photoluminescence was noticed for both GQD samples. A higher intensity of photoluminescence is detected for GQDs irradiated in 4 % isopropyl alcohol solution. This result shows that further increase of gamma irradiation dose has a great potential for improvement of luminescence properties of GQDs. PB - Springer T2 - Optical and Quantum Electronics T1 - Effects of low gamma irradiation dose on the photoluminescence properties of graphene quantum dots VL - 48 IS - 4 DO - 10.1007/s11082-016-0516-z ER -
@article{ author = "Jovanović, Svetlana P. and Marković, Zoran M. and Budimir, Milica and Špitalsky, Zdenko and Vidoeski, Bojan and Todorović-Marković, Biljana", year = "2016", abstract = "We prepared graphene quantum dots (GQDs) using electrochemical approach. The luminescent properties of GQDs at various excitation wavelengths are examined. In order to study the possibility to improve these properties, we applied a low dose of gamma irradiation (15 kGy) on GQDs dissolved in two media: water and 4 % isopropyl alcohol solution. Upon gamma irradiation of water, various free radical species are formed and they usually cause oxidation. In the presence of isopropyl alcohol in water, during irradiation, oxygen contained radicals are quenched and only hydrogen radicals can survive and reduce the material exposed to irradiation. Morphology of GQDs is examined by atomic force and transmission electron microscopy. After gamma irradiation the increase of photoluminescence was noticed for both GQD samples. A higher intensity of photoluminescence is detected for GQDs irradiated in 4 % isopropyl alcohol solution. This result shows that further increase of gamma irradiation dose has a great potential for improvement of luminescence properties of GQDs.", publisher = "Springer", journal = "Optical and Quantum Electronics", title = "Effects of low gamma irradiation dose on the photoluminescence properties of graphene quantum dots", volume = "48", number = "4", doi = "10.1007/s11082-016-0516-z" }
Jovanović, S. P., Marković, Z. M., Budimir, M., Špitalsky, Z., Vidoeski, B.,& Todorović-Marković, B.. (2016). Effects of low gamma irradiation dose on the photoluminescence properties of graphene quantum dots. in Optical and Quantum Electronics Springer., 48(4). https://doi.org/10.1007/s11082-016-0516-z
Jovanović SP, Marković ZM, Budimir M, Špitalsky Z, Vidoeski B, Todorović-Marković B. Effects of low gamma irradiation dose on the photoluminescence properties of graphene quantum dots. in Optical and Quantum Electronics. 2016;48(4). doi:10.1007/s11082-016-0516-z .
Jovanović, Svetlana P., Marković, Zoran M., Budimir, Milica, Špitalsky, Zdenko, Vidoeski, Bojan, Todorović-Marković, Biljana, "Effects of low gamma irradiation dose on the photoluminescence properties of graphene quantum dots" in Optical and Quantum Electronics, 48, no. 4 (2016), https://doi.org/10.1007/s11082-016-0516-z . .