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.

引用

页码：12156 / 12159

页数：4

共 28 条

[1] Molecular electronics with carbon nanotubes [J].

Avouris, P .

ACCOUNTS OF CHEMICAL RESEARCH, 2002, 35 (12) :1026-1034

[2] Electronic confinement and coherence in patterned epitaxial graphene [J].

Berger, Claire ;

Song, Zhimin ;

Li, Xuebin ;

Wu, Xiaosong ;

Brown, Nate ;

Naud, Cecile ;

Mayou, Didier ;

Li, Tianbo ;

Hass, Joanna ;

Marchenkov, Atexei N. ;

Conrad, Edward H. ;

First, Phillip N. ;

de Heer, Wait A. .

SCIENCE, 2006, 312 (5777) :1191-1196

[3] Luminescent Surface Quaternized Carbon Dots [J].

Bourlinos, Athanasios B. ;

Zboril, Radek ;

Petr, Jan ;

Bakandritsos, Aristides ;

Krysmann, Marta ;

Giannelis, Emmanuel P. .

CHEMISTRY OF MATERIALS, 2012, 24 (01) :6-8

[4]

Burchell T. D., 1999, Carbon Materials for Advanced Technologies

[5] Carbon dots for multiphoton bioimaging [J].

Cao, Li ;

Wang, Xin ;

Meziani, Mohammed J. ;

Lu, Fushen ;

Wang, Haifang ;

Luo, Pengju G. ;

Lin, Yi ;

Harruff, Barbara A. ;

Veca, L. Monica ;

Murray, Davoy ;

Xie, Su-Yuan ;

Sun, Ya-Ping .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (37) :11318-+

[6] Solution properties of single-walled carbon nanotubes [J].

Chen, J ;

Hamon, MA ;

Hu, H ;

Chen, YS ;

Rao, AM ;

Eklund, PC ;

Haddon, RC .

SCIENCE, 1998, 282 (5386) :95-98

[7] Ionic strength and pH reversible response of visible and near-infrared fluorescence of graphene oxide nanosheets for monitoring the extracellular pH [J].

Chen, Jin-Long ;

Yan, Xiu-Ping .

CHEMICAL COMMUNICATIONS, 2011, 47 (11) :3135-3137

[8] Characterization and application of single fluorescent nanodiamonds as cellular biomarkers [J].

Fu, Chi-Cheng ;

Lee, Hsu-Yang ;

Chen, Kowa ;

Lim, Tsong-Shin ;

Wu, Hsiao-Yun ;

Lin, Po-Keng ;

Wei, Pei-Kuen ;

Tsao, Pei-Hsi ;

Chang, Huan-Cheng ;

Fann, Wunshain .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2007, 104 (03) :727-732

[9] The rise of graphene [J].

Geim, A. K. ;

Novoselov, K. S. .

NATURE MATERIALS, 2007, 6 (03) :183-191

[10]

Gogoi N., RSC ADV UNPUB

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