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dc.creatorJovanović, Svetlana P.
dc.creatorSyrgiannis, Zois
dc.creatorMarković, Zoran M.
dc.creatorBonasera, Aurelio
dc.creatorKepić, Dejan P.
dc.creatorBudimir, Milica
dc.creatorMilivojević, Dušan
dc.creatorSpasojević, Vuk D.
dc.creatorDramićanin, Miroslav
dc.creatorPavlović, Vladimir B.
dc.creatorTodorović-Marković, Biljana
dc.identifier.issn1944-8244 (print)
dc.description.abstractHerein, the ability of gamma irradiation to enhance the photoluminescence properties of graphene quantum dots (GQDs) was investigated. Different doses of gamma-irradiation were used on GQDs to examine the way in which their structure and optical properties can be affected. The photoluminescence quantum yield was increased six times for the GQDs irradiated with high doses compared to the nonirradiated material. Both photoluminescence lifetime and values of optical band gap were increased with the dose of applied gamma irradiation. In addition, the exploitation of the gamma-irradiated GQDs as photosensitizers was examined by monitoring the production of singlet oxygen under UV illumination. The main outcome was that the GQDs irradiated at lower doses act as better photoproducers than the ones irradiated at higher doses. These results corroborate that the structural changes caused by gamma irradiation have a direct impact on GQD ability to produce singlet oxygen and their photostability under prolonged UV illumination. This makes low-dose irradiated GQDs promising candidates for photodynamic therapy.en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172003/RS//
dc.sourceACS Applied Materials and Interfacesen
dc.subjectgraphene quantum dotsen
dc.subjectgamma irradiationen
dc.subjectquantum yielden
dc.subjectphotodynamic therapyen
dc.titleModification of Structural and Luminescence Properties of Graphene Quantum Dots by Gamma Irradiation and Their Application in a Photodynamic Therapyen
dcterms.abstractМиливојевић Душан; Драмићанин Мирослав; Тодоровић-Марковић Биљана; Марковић Зоран; Будимир Милица; Спасојевиц, Вук Д.; Сyргианнис, Зоис; Јовановиц, Светлана П.; Бонасера, Aурелио; Кепић Дејан; Павловиц, Владимир Б.;

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