Graphene quantum dots conjugated with polymers for two-photon properties under two-photon excitation

Few studies have investigated the two-photon properties of graphene quantum dots (GQDs) and GQD-conjugated polymers. The results of the present study revealed that conjugated polymers containing nitrogen and sulfur atoms caused higher quantum confinement of emissive energy to be trapped on the surfa...

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Bibliographic Details
Published in:Nanoscale 2016-09, Vol.8 (38), p.16874-1688
Main Authors: Kuo, Wen-Shuo, Hsu, Chih-Li Lilian, Chen, Hua-Han, Chang, Chia-Yuan, Kao, Hui-Fang, Chou, Lawrence Chao-Shan, Chen, Yi-Chun, Chen, Shean-Jen, Chang, Wen-Tsan, Tseng, Shih-Wen, Wang, Jiu-Yao, Pu, Ying-Chih
Format: Article
Language:English
Subjects:
Emissivity
Graphene
Nanomaterials
Nanostructure
Nitrogen
Polymers
Quantum confinement
Quantum dots
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Summary:Few studies have investigated the two-photon properties of graphene quantum dots (GQDs) and GQD-conjugated polymers. The results of the present study revealed that conjugated polymers containing nitrogen and sulfur atoms caused higher quantum confinement of emissive energy to be trapped on the surface of nanomaterials, resulting in a high-photoluminescence quantum yield and notable two-photon properties. Additionally, the nanomaterials generated no reactive oxygen species-dependent oxidative stress on cells and served as promising two-photon contrast probes. Determination of the impressive two-photon photoproperties of GQDs and different GQD-passivated polymers under irradiation with a multiphoton laser.
ISSN:2040-3364
2040-3372
DOI:10.1039/c6nr02614a