An approach to controlling the fluorescence of graphene quantum dots: From surface oxidation to fluorescent mechanism

doi:10.1088/1674-1056/23/12/128103

中国物理B ›› 2014, Vol. 23 ›› Issue (12): 128103-128103.doi: 10.1088/1674-1056/23/12/128103

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

An approach to controlling the fluorescence of graphene quantum dots: From surface oxidation to fluorescent mechanism

胡音^a, 何大伟^a, 王永生^a, 段嘉华^a, 王素凤^a, 富鸣^a, 王闻硕^{a b}

a Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China;
b Institute of Particle Technology, Friedrich-Alexander University Erlangen-Nuremberg, Cauerstrasse 4, D-91058 Erlangen, Germany

收稿日期:2014-05-07 修回日期:2014-06-23 出版日期:2014-12-15 发布日期:2014-12-15
基金资助:
Project supported by the National Basic Research Program of China (Grant Nos. 2011CB932700 and 2011CB932703), the National Natural Science Foundation of China (Grant Nos. 61335006, 61378073, and 61077044), and the Beijing Natural Science Foundation, China (Grant No. 4132031).

An approach to controlling the fluorescence of graphene quantum dots: From surface oxidation to fluorescent mechanism

Hu Yin (胡音)^a, He Da-Wei (何大伟)^a, Wang Yong-Sheng (王永生)^a, Duan Jia-Hua (段嘉华)^a, Wang Su-Feng (王素凤)^a, Fu Ming (富鸣)^a, Wang Wen-Shuo (王闻硕)^{a b}

a Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China;
b Institute of Particle Technology, Friedrich-Alexander University Erlangen-Nuremberg, Cauerstrasse 4, D-91058 Erlangen, Germany

Received:2014-05-07 Revised:2014-06-23 Online:2014-12-15 Published:2014-12-15
Contact: He Da-Wei, Wang Wen-Shuo E-mail:dwhe@bjtu.edu.cn;wenshuo.wang@fau.de
Supported by:
Project supported by the National Basic Research Program of China (Grant Nos. 2011CB932700 and 2011CB932703), the National Natural Science Foundation of China (Grant Nos. 61335006, 61378073, and 61077044), and the Beijing Natural Science Foundation, China (Grant No. 4132031).

摘要/Abstract

摘要：

We report a facile method of synthesizing graphene quantum dots (GQDs) with tunable emission. The as-prepared GQDs each with a uniform lateral dimension of ca. 6 nm have fine solubility and high stability. The photoluminescence mechanism is further investigated based on the surfacestructure and the photoluminescence behaviors. Based on our discussion, the green fluorescence emission can be attributed to the oxygen functional groups, which could possess broad emission bands within the π–π^* gap. This work is helpful to explain the vague fluorescent mechanism of GQDs, and the reported synthetic method is useful to prepare GQDs with controllable fluorescent colors.

关键词: graphene quantum dots, tunable luminescence

Abstract:

Key words: graphene quantum dots, tunable luminescence

中图分类号: (Graphene)

81.05.ue

73.21.Hb (Quantum wires) 87.15.mq (Luminescence)

胡音, 何大伟, 王永生, 段嘉华, 王素凤, 富鸣, 王闻硕. An approach to controlling the fluorescence of graphene quantum dots: From surface oxidation to fluorescent mechanism[J]. 中国物理B, 2014, 23(12): 128103-128103.

Hu Yin (胡音), He Da-Wei (何大伟), Wang Yong-Sheng (王永生), Duan Jia-Hua (段嘉华), Wang Su-Feng (王素凤), Fu Ming (富鸣), Wang Wen-Shuo (王闻硕). An approach to controlling the fluorescence of graphene quantum dots: From surface oxidation to fluorescent mechanism[J]. Chin. Phys. B, 2014, 23(12): 128103-128103.

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An approach to controlling the fluorescence of graphene quantum dots: From surface oxidation to fluorescent mechanism

An approach to controlling the fluorescence of graphene quantum dots: From surface oxidation to fluorescent mechanism

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