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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.
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CARBON
ISSN： 0008-6223
Year： 2012
Issue： 8
Volume： 50
Page： 2810-2815
5 . 8 6 8
JCR@2012
1 0 . 5 0 0
JCR@2023
ESI Discipline： CHEMISTRY;
JCR Journal Grade：1
CAS Journal Grade：1
Cited Count：
WoS CC Cited Count： 542
SCOPUS Cited Count： 579
ESI Highly Cited Papers on the List： 34 Unfold All
WanFang Cited Count：
Chinese Cited Count：
30 Days PV： 2
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