Surrounding media sensitive photoluminescence of boron-doped graphene quantum dots for highly fluorescent dyed crystals, chemical sensing and bioimaging

被引：224

作者：

Fan, Zetan ^{[1
]}

Li, Yunchao ^{[1
]}

Li, Xiaohong ^{[1
]}

Fan, Louzhen ^{[1
]}

Zhou, Shixin ^{[2
]}

Fang, Decai ^{[1
]}

Yang, Shihe ^{[3
]}

机构：

[1] Beijing Normal Univ, Dept Chem, Beijing 100875, Peoples R China

[2] Peking Univ, Hlth Sci Ctr, Sch Basic Med, Dept Cell Biol, Beijing 100191, Peoples R China

[3] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China

来源：

CARBON | 2014年 / 70卷

关键词：

OXYGEN REDUCTION; ELECTROCATALYTIC ACTIVITY; CARBON NANOTUBES; GREEN; OXIDE; BLUE; GRAPHITE; AVENUE; SENSOR; ROUTE;

D O I：

10.1016/j.carbon.2013.12.085

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

We demonstrate that boron-doping of graphene quantum dots (B-GQDs) give rise to rich fluorescence owing to their peculiar interaction with the surrounding media. A B-GQDs borax (Na2B4O7.10H(2)O) solution was shown to be highly fluorescent in green, and upon evaporation, formed bright green fluorescent crystals. However, removing the borax left behind only blue and yellow luminescent solutions. These intriguing findings are rationalized by the insight that B-GQDs associate in the absence of borax whereas they form dative valence bonds with the bridgehead O atoms of borax in the presence of borax. We further demonstrate the use of the B-GQDs, for example, in chemosensor for detecting Al3+ and biomarker for cellular imaging. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：149 / 156

页数：8

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