Luminescence origin of carbon based dots obtained from citric acid and amino group-containing molecules

被引：131

作者：

Fang, Qingqing ^{[1
]}

Dong, Yongqiang ^{[1
]}

Chen, Yingmei ^{[1
]}

Lu, Chun-Hua ^{[1
]}

Chi, Yuwu ^{[1
]}

Yang, Huang-Hao ^{[1
]}

Yu, Ting ^{[2
]}

机构：

[1] Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Coll Chem, Key Lab Anal & Detect Technol Food Safety MOE & F, Fuzhou 350108, Fujian, Peoples R China

[2] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

来源：

CARBON | 2017年 / 118卷

基金：

中国国家自然科学基金;

关键词：

GRAPHENE QUANTUM DOTS; ELECTROGENERATED CHEMILUMINESCENCE; ELECTROCHEMISTRY; FLUORESCENCE; MECHANISM; NITROGEN; AVENUE; OXIDE;

D O I：

10.1016/j.carbon.2017.03.061

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：

Carbon based dots (CDs) have attracted broad attention exhibit due to the unique optical properties. However, the exact origins of their optical properties are still controversial. Citric acid (CA) coupled with some amino group-containing small molecules are believed to be ideal precursors for the synthesis of high luminescent CDs through various thermal treatment processes. Herein, CA coupled with four amino group-containing small molecules are chosen as models to synthesize CDs for a systematical study on the photoluminesce (PL) properties. It is found that the PL properties of CDs are resulted from the synergistic effect of the contained luminescent pyridine-derivatives and the defect states. A reasonable mechanism of PL emission from the CDs has been proposed. The results presented here must be critical for understanding the origins of PL, and also for preparing CDs with strong and wavelength tunable PL emission. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：319 / 326

页数：8

共 42 条

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Electrochemistry and electrogenerated chemiluminescence of CdTe nanoparticles [J].