Facile Synthesis of Water-Soluble Fluorescent Silver Nanoclusters and HgII Sensing

被引：357

作者：

Adhikari, Bimalendu ^{[1
]}

Banerjee, Arindam ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Biol Chem, Kolkata 700032, India

来源：

CHEMISTRY OF MATERIALS | 2010年 / 22卷 / 15期

关键词：

AG NANOCLUSTERS; DENDRITIC NANOSTRUCTURES; COLORIMETRIC DETECTION; AQUEOUS-SOLUTION; SELF-ASSEMBLIES; GOLD CLUSTERS; MERCURY IONS; METAL; NANOPARTICLES; LUMINESCENCE;

D O I：

10.1021/cm1001253

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A single step facile synthesis of highly emissive, water-soluble, fluorescent Ag nanoclusters has been reported using a small molecule, dihydrolipoic acid. These clusters were characterized using ultraviolet/visible (UV/vis) spectroscopy, photoluminescence spectroscopy, Fourier transform infrared spectroscopy (FT-IR), high-resolution transmission electron microscopy (HR-TEM), dynamic light scattering (DLS), and X-ray diffraction (XRD) studies. Mass spectrometric analysis shows the presence of a few atoms in nanoclusters containing only Ag-4 and Ag-5. The reported fluorescent Ag nanoclusters show excellent optical properties, including narrow emission profile, larger Stokes shift (more than 200 nm), and good photostability. Interestingly, these nanoclusters also exhibit semiconducting property. Moreover, as-prepared fluorescent Ag nanoclusters have been utilized as an indicator for selective and ultrasensitive detection of highly toxic Hg-II ions in water, even at subnanomolar concentrations.

引用

页码：4364 / 4371

页数：8

共 63 条

[1] Physical characteristics of heat-treated nano-silvers dispersed in sol-gel silica matrix [J].

Babapour, A ;

Akhavan, O ;

Azimirad, R ;

Moshfegh, AZ .

NANOTECHNOLOGY, 2006, 17 (03) :763-771

[2] Formation and Stabilization of Fluorescent Gold Nanoclusters Using Small Molecules [J].

Bao, Yuping ;

Yeh, Hsin-Chih ;

Zhong, Chang ;

Ivanov, Sergei A. ;

Sharma, Jaswinder K. ;

Neidig, Michael L. ;

Vu, Dung M. ;

Shreve, Andrew P. ;

Dyer, R. Brian ;

Werner, James H. ;

Martinez, Jennifer S. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (38) :15879-15882

[3] A general strategy to convert the MerR family proteins into highly sensitive and selective fluorescent biosensors for metal ions [J].

Chen, P ;

He, CA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (03) :728-729

[4] Gold nanoelectrodes of varied size: Transition to molecule-like charging [J].

Chen, SW ;

Ingram, RS ;

Hostetler, MJ ;

Pietron, JJ ;

Murray, RW ;

Schaaff, TG ;

Khoury, JT ;

Alvarez, MM ;

Whetten, RL .

SCIENCE, 1998, 280 (5372) :2098-2101

[5] Fluorescent Ag nanoclusters in glass induced by an infrared femtosecond laser [J].

Dai, Ye ;

Hu, Xiao ;

Wang, Chen ;

Chen, Danping ;

Jiang, Xiongwei ;

Zhu, Congshan ;

Yu, Bingkun ;

Qiu, Jianrong .

CHEMICAL PHYSICS LETTERS, 2007, 439 (1-3) :81-84

[6] Photoactivation of silver-exchanged zeolite A [J].

De Cremer, Gert ;

Antoku, Yasuko ;

Roeffaers, Maarten B. J. ;

Sliwa, Michel ;

Van Noyen, Jasper ;

Smout, Steve ;

Hofkens, Johan ;

De Vos, Dirk E. ;

Sels, Bert F. ;

Vosch, Tom .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (15) :2813-2816

[7] Characterization of Fluorescence in Heat-Treated Silver-Exchanged Zeolites [J].

De Cremer, Gert ;

Coutino-Gonzalez, Eduardo ;

Roeffaers, Maarten B. J. ;

Moens, Bart ;

Ollevier, Jeroen ;

Van der Auweraer, Mark ;

Schoonheydt, Robert ;

Jacobs, Pierre A. ;

De Schryver, Frans C. ;

Hofkens, Johan ;

De Vos, Dirk E. ;

Sels, Bert F. ;

Vosch, Tom .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (08) :3049-3056

[8] Color Tunability and Electrochemiluminescence of Silver Nanoclusters [J].

Diez, Isabel ;

Pusa, Matti ;

Kulmala, Sakari ;

Jiang, Hua ;

Walther, Andreas ;

Goldmann, Anja S. ;

Muller, Axel H. E. ;

Ikkala, Olli ;

Ras, Robin H. A. .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (12) :2122-2125

[9] Reduction of Ag+ on polyacrylate chains in aqueous solution [J].

Ershov, BG ;

Henglein, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (52) :10663-10666

[10] Highly Sequence-Dependent Formation of Fluorescent Silver Nanoclusters in Hybridized DNA Duplexes for Single Nucleotide Mutation Identification [J].

Guo, Weiwei ;

Yuan, Jipei ;

Dong, Qingzhe ;

Wang, Erkang .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (03) :932-+

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