Aqueous synthesis of amphiphilic graphene quantum dots and their application as surfactants for preparing of fluorescent polymer microspheres

[Display omitted] Amphiphilic carbon-based nanoparticles have recently attracted much attention in stabilizing Pickering emulsions owing to their low cytotoxicity, cost-effectiveness and biocompatibility. In this work, a facile and aqueous synthesis method was developed for the preparation of amphip...

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Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2019-02, Vol.563, p.77-83
Main Authors: He, Jingbo, Li, Zhiyang, Zhao, Rujian, Lu, Yao, Shi, Lanqi, Liu, Jiyang, Dong, Xiaoping, Xi, Fengna
Format: Article
Language:English
Subjects:
Amphiphilic graphene quantum dots
Aqueous synthesis
Luminescent polystyrene microspheres
Mini-emulsion polymerization
Particle surfactant
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Summary:[Display omitted] Amphiphilic carbon-based nanoparticles have recently attracted much attention in stabilizing Pickering emulsions owing to their low cytotoxicity, cost-effectiveness and biocompatibility. In this work, a facile and aqueous synthesis method was developed for the preparation of amphiphilic graphene quantum dots by modifying hydrophilic GQDs (GQDs-COOH) with hydrophobic hexylamine. Distinctive from pristine GQDs-COOH, amphiphilic GQDs show interesting surface-active properties and can stabilize water-in-cyclohexane Pickering emulsions. As efficient particle surfactants, amphiphilic GQDs could be applied in a mini-emulsion polymerization system to synthesize submicron-sized polystyrene particles. Particularly, the as-prepared PS particles were highly luminescent as produced by the highly fluorescent amphiphilic GQDs.
ISSN:0927-7757
1873-4359
DOI:10.1016/j.colsurfa.2018.11.064