Fluorescent carbon dots obtained from chitosan gel

被引：130
作者：
Chowdhury, Devasish [1 ]
Gogoi, Neelam [1 ]
Majumdar, Gitanjali [2 ]
机构：
[1] Inst Adv Study Sci & Technol, Div Phys Sci, Polymer Unit, Garchuk 781035, Guwahati, India
[2] Assam Engn Coll, Dept Chem, Jalukbari 781013, Guwahati, India
来源：
RSC ADVANCES | 2012年 / 2卷 / 32期
关键词：
METAL-ENHANCED FLUORESCENCE; GRAPHENE;
D O I：
10.1039/c2ra21705h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this communication we report the preparation of fluorescent carbon dots (CDs) from chitosan gel. We also studied the photoluminescent (PL) properties of CDs prepared in different pH conditions. While CDs prepared at pH3 give an intense sharp blue fluorescence, those prepared at pH 1 or 5 give a broad emission. In addition, we also investigated CDs prepared from chitosan/Ag and chitosan/Au nanocomposites. It was observed that although the emission was broad and less well defined, there was an enhancement of PL emission for the CDs prepared from chitosan/Ag or chitosan/Au nanocomposites.
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收藏
页码：12156 / 12159
页数：4
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