Post-epoxidation of graphene quantum dots

[Display omitted] •Post-Epoxidation of graphene quantum dots (E-GQDs) were prepared in this work.•GQDs just increased the amount of surface epoxy groups.•The formation mechanism of this E-GQDs is electrophilic addition reaction. In this study, a simple, rapid and green post-epoxidation treatment for...

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Bibliographic Details
Published in:Chemical physics letters 2018-08, Vol.706, p.140-144
Main Authors: Wang, Yingmin, Liu, Xinqian, Kong, Wenhui, Wang, Lifeng, Li, Yan
Format: Article
Language:English
Subjects:
Epoxy group
Graphene quantum dots
Post-epoxidation
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Summary:[Display omitted] •Post-Epoxidation of graphene quantum dots (E-GQDs) were prepared in this work.•GQDs just increased the amount of surface epoxy groups.•The formation mechanism of this E-GQDs is electrophilic addition reaction. In this study, a simple, rapid and green post-epoxidation treatment for graphene quantum dots (GQDs) was proposed. This method only adjusted epoxy functional groups on GQDs' surface, and correspondingly maintained their original size and concentration. The formation mechanism of this epoxidation of graphene quantum dots (E-GQDs) is similar to the epoxidation of alkenes, which will be epoxidated by electrophilic addition reaction. The GQDs after epoxidation will enhanced surface activity of GQDs, and help to expand its application in biological imaging and photothermal therapy.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2018.05.082