Polyamine-functionalized carbon quantum dots for chemical sensing

被引：586

作者：

Dong, Yongqiang

Wang, Ruixue

Li, Hao

Shao, Jingwei

Chi, Yuwu ^{[1
]}

Lin, Xiaomei

Chen, Guonan

机构：

[1] Fuzhou Univ, MOE Key Lab Anal & Detect Technol Food Safety, Fujian Prov Key Lab Anal & Detect Technol Food Sa, Fuzhou 350108, Fujian, Peoples R China

来源：

CARBON | 2012年 / 50卷 / 08期

基金：

中国国家自然科学基金;

关键词：

ELECTROGENERATED CHEMILUMINESCENCE; NANOCRYSTALS;

D O I：

10.1016/j.carbon.2012.02.046

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polyamine-functionalized carbon quantum dots (CQDs) with high fluorescence quantum yield (42.5%) have been synthesized by the low temperature (<200 degrees C) carbonization of citric acid with branched polyethylenimine (BPEI) in one simple step. The obtained BPEI-CQDs are spherical graphite nanocrystals (average 6.2 nm in size) capped with abundant BPEI at their surfaces. It is the first report that CQDs are both amino-functionalized and highly fluorescent, which suggests their promising applications in chemical sensing. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：2810 / 2815

页数：6

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