Carbon-Based Dots Co-doped with Nitrogen and Sulfur for High Quantum Yield and Excitation-Independent Emission

被引：2088

作者：

Dong, Yongqiang ^{[1
,2
,3
]}

Pang, Hongchang ^{[1
,2
]}

Yang, Hong Bin ^{[1
,2
]}

Guo, Chunxian ^{[1
,2
,4
]}

Shao, Jingwei ^{[7
]}

Chi, Yuwu ^{[7
]}

Li, Chang Ming ^{[1
,2
,5
,6
]}

Yu, Ting ^{[3
,4
]}

机构：

[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637457, Singapore

[2] Nanyang Technol Univ, Ctr Adv Bionanosyst, Singapore 637457, Singapore

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

[4] Nanyang Technol Univ, Dept Phys, Fac Sci, Singapore 117542, Singapore

[5] Southwest Univ, Inst Clean Energy & Adv Mat, Chongqing 400715, Peoples R China

[6] Chongqing Key Lab Adv Mat & Technol Clean Energie, Chongqing 400715, Peoples R China

[7] Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2013年 / 52卷 / 30期

基金：

新加坡国家研究基金会;

关键词：

doped materials; graphene; quantum dots; nitrogen; sulfur; NANOCRYSTALS; PHOTOLUMINESCENCE; NANOPARTICLES; PLATFORM; AVENUE;

D O I：

10.1002/anie.201301114

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Helpful elements: A facile bottom-up method using citric acid and L-cysteine as a precursor has been developed to prepare graphene quantum dots (GQDs) co-doped with nitrogen and sulfur. A new type and high density of surface state of GQDs arises, leading to high yields (more than 70 %) and excitation-independent emission. FLQY=fluorescence quantum yield. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：7800 / 7804

页数：5

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