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美国化学会期刊Langmuir关于南京大学、扬州大学论文一稿多发的撤稿通告
 
BOQ
 
郭荣，扬州大学校长。
http://www.yzu.edu.cn/xxgk/ld_guorong.HTM
 
Langmuir, 23 (22), 11342 -11342, 2007. 10.1021/la702841r 
S0743-7463(70)02841-X 
Web Release Date: October 4, 2007 Copyright ? 2007 American Chemical 
Society 
Adsorption Characteristics of Thionine on Gold Nanoparticles 

Yuanhua Ding,* Xumin Zhang, Xiaoxia Liu, and Rong Guo 


Langmuir 2006, 22, 2292-2298
The articles "Adsorption Characteristics of Thionine on Gold 
Nanoparticles" by Yuanhua Ding, Xumin Zhang, Xiaoxia Liu, and Rong Guo, 
which appeared in issue 5, February 28, 2006, of Langmuir (22, 
2292-2298), and "Studies on Interactions of Thionine with Gold 
Nanoparticles" by Yuanhua Ding, Xumin Zhang, Xiaoxia Liu, and Rong Guo, 
which appeared in issues 1-3, November 15, 2006, of Colloids Surf., A 
(290, 82-88), constitute duplicate publication, and the editors of 
both journals retract them.10/04/2007

* In papers with more than one author, the asterisk indicates the name 
of the author to whom inquiries about the paper should be addressed.

http://pubs.acs.org/cgi-bin/asap ... html/la702841r.html
 
被撤销论文链接
http://pubs.acs.org/cgi-bin/abstract.cgi/langd5/2006/22/i05/abs/la0528
97p.html
Adsorption Characteristics of Thionine on Gold Nanoparticles 

Yuanhua Ding,* Xumin Zhang, Xiaoxia Liu, and Rong Guo* 

School of Chemistry and Chemical Engineering, Nanjing University, 
Nanjing 210093, P. R. China, and School of Chemistry and Chemical 
Engineering, Yangzhou University, Yangzhou 225002, P. R. China 

Received October 27, 2005

In Final Form: January 4, 2006

Abstract:

This paper was retracted on October 4, 2007 (Langmuir 2007, 23, 11342).

Adsorption characteristics of thionine on gold nanoparticles have been 
studied by using UV-vis absorption spectroscopy, fluorescence 
spectroscopy, transmission electron microscopy (TEM), cyclic 
voltammetry and Fourier transform infrared spectroscopy. With the 
increasing concentration of gold nanoparticles, the absorption peak 
intensity of H-type dimers of thionine increases continuously, whereas 
that of monomers of thionine first increases and then decreases. The 
addition of gold nanoparticles makes the equilibrium between the 
monomer and H-type dimer forms of thionine move toward the dimer forms. 
Furthermore, the adsorption behavior of thionine on gold nanoparticles 
is also influenced by temperature. TEM images show that the addition 
of thionine results in an obvious aggregation, and further support the 
absorption spectral results. The fluorescence intensity of adsorbed 
thionine is quenched by gold nanoparticles due to the electronic 
interaction between thionine molecules and gold nanoparticles. Cyclic 
voltammetric and infrared spectroscopic studies show that the nitrogen 
atoms of both of the NH2 moieties of thionine strongly bind to the 
gold nanoparticle surfaces through the electrostatic interaction of 
thionine with gold nanoparticles. For 15-20 nm particles, the number 
of adsorbed thionine molecules per gold nanoparticle is about 7.66 × 
104. Thionine molecules can not only bind to a particle to form a 
compact monolayer via both of the NH2 moieties, but they can also bind 
to two particles via their two NH2 moieties, respectively. 

另一篇
Colloids and Surfaces A: Physicochemical and Engineering Aspects 
Volume 290, Issues 1-3, 15 November 2006, Pages 82-88 
 
http://dx.doi.org/10.1016/j.colsurfa.2006.05.003
 
(XYS20071019)

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