Polyamine-functionalized carbon quantum dots for chemical sensing

被引：587
|
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
收藏
页码：2810 / 2815
页数：6
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