Single-Particle Fluorescence Intensity Fluctuations of Carbon Nanodots

被引：213

作者：

Das, Somes K. ^{[1
]}

Liu, Yiyang ^{[1
]}

Yeom, Sinhea ^{[1
]}

Kim, Doo Young ^{[1
]}

Richards, Christopher I. ^{[1
]}

机构：

[1] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA

来源：

NANO LETTERS | 2014年 / 14卷 / 02期

关键词：

Carbon nanodot; single particle fluorescence; nanostructure; fluorescence jumps and quenched states; GRAPHENE QUANTUM DOTS; IN-VIVO; PHOTOLUMINESCENCE; MOLECULE; NANOPARTICLES; ONIONS; BRIGHT;

D O I：

10.1021/nl403820m

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

Fluorescent carbon nanodots (CNDs) were synthesized in oxidized and reduced forms and were analyzed at the single-particle level. Images of single CNDs at different excitation energies revealed significant heterogeneity in the lower energy trap sites between particles. We observed that a high percentage of reduced CND particles transitioned between multiple fluorescence intensity levels indicative of multichromophoric systems. Despite this behavior, individual CNDs exhibit single-step photobleaching and transient blinking to the background level suggesting single-molecule behavior.

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收藏

页码：620 / 625

页数：6

相关论文

共 41 条

[1]

Luminescent Carbon Nanodots: Emergent Nanolights [J].

Baker, Sheila N. ;

Baker, Gary A. .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2010, 49 (38) :6726-6744

[2]

Carbon Nanoparticle-based Fluorescent Bioimaging Probes [J].

Bhunia, Susanta Kumar ;

Saha, Arindam ;

Maity, Amit Ranjan ;

Ray, Sekhar C. ;

Jana, Nikhil R. .

SCIENTIFIC REPORTS, 2013, 3

[3]

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-+

[4]

Carbon Nanoparticles as Visible-Light Photocatalysts for Efficient CO2 Conversion and Beyond [J].

Cao, Li ;

Sahu, Sushant ;

Anilkumar, Parambath ;

Bunker, Christopher E. ;

Xu, Juan ;

Fernando, K. A. Shiral ;

Wang, Ping ;

Guliants, Elena A. ;

Tackett, Kenneth N., II ;

Sun, Ya-Ping .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (13) :4754-4757

[5]

Polyamine-functionalized carbon quantum dots for chemical sensing [J].

Dong, Yongqiang ;

Wang, Ruixue ;

Li, Hao ;

Shao, Jingwei ;

Chi, Yuwu ;

Lin, Xiaomei ;

Chen, Guonan .

CARBON, 2012, 50 (08) :2810-2815

[6]

Blue Photoluminescence from Chemically Derived Graphene Oxide [J].

Eda, Goki ;

Lin, Yun-Yue ;

Mattevi, Cecilia ;

Yamaguchi, Hisato ;

Chen, Hsin-An ;

Chen, I-Sheng ;

Chen, Chun-Wei ;

Chhowalla, Manish .

ADVANCED MATERIALS, 2010, 22 (04) :505-+

[7]

Carbon Nano-onions for Imaging the Life Cycle of Drosophila Melanogaster [J].

Ghosh, Mitrajit ;

Sonkar, Sumit Kumar ;

Saxena, Manav ;

Sarkar, Sabyasachi .

SMALL, 2011, 7 (22) :3170-3177

[8]

Making Graphene Luminescent by Oxygen Plasma Treatment [J].

Gokus, T. ;

Nair, R. R. ;

Bonetti, A. ;

Boehmler, M. ;

Lombardo, A. ;

Novoselov, K. S. ;

Geim, A. K. ;

Ferrari, A. C. ;

Hartschuh, A. .

ACS NANO, 2009, 3 (12) :3963-3968

[9]

Hg(II) sensing based on functionalized carbon dots obtained by direct laser ablation [J].

Goncalves, Helena ;

Jorge, Pedro A. S. ;

Fernandes, J. R. A. ;

Esteves da Silva, Joaquim C. G. .

SENSORS AND ACTUATORS B-CHEMICAL, 2010, 145 (02) :702-707

[10]

Luminscent Graphene Quantum Dots for Organic Photovoltaic Devices [J].

Gupta, Vinay ;

Chaudhary, Neeraj ;

Srivastava, Ritu ;

Sharma, Gauri Datt ;

Bhardwaj, Ramil ;

Chand, Suresh .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (26) :9960-9963

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