Issue 5, 2009
From the journal:

Dalton Transactions

Donor–π–acceptor structure between Ag nanoparticles and azobenzenechromophore and its enhanced third-order optical non-linearity

Jiangtian Li,a   Limin Guo,a   Lingxia Zhang,a   Chichao Yu,a   Ling Yu,a   Peng Jiang,a   Chenyang Wei,a   Fei Qina  and  Jianlin Shi*a  

* Corresponding authors

a State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, 1295 Dingxi Road, Shanghai 200050, China
E-mail: jlshi@sunm.shcnc.ac.cn
Fax: +86-21-52413122
Tel: +86-21-524127120

Abstract

An amorphous silica hybrid film containing covalently linked azobenzene chromophores and Ag nanoparticles was synthesized by a one-step sol-gel route in the presence of amino trialkoxysilane (APTES). The electron transfer from the N-containing groups in the APTES and azobenzene molecules, which are chemisorbed onto the surface of Ag nanoaprticles, makes the Ag nanoparticles negatively charged. Subsequently, a new D–π–A electron structure between the Ag nanoparticles and the N-containing groups/azobenzene chromophores is created. The enhanced internal electric field in the nanoparticles and the strengthened and extended π-conjugation in the new D–π–A electron structure, lead to the large enhancement of optical non-linearity of the hybrid films.

Graphical abstract: Donor–π–acceptor structure between Ag nanoparticles and azobenzene chromophore and its enhanced third-order optical non-linearity

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Article information

DOI
https://doi.org/10.1039/B814321H
Article type
Paper
Submitted
18 Aug 2008
Accepted
20 Oct 2008
First published
02 Dec 2008

Dalton Trans., 2009, 823-831

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Donor–π–acceptor structure between Ag nanoparticles and azobenzene chromophore and its enhanced third-order optical non-linearity

J. Li, L. Guo, L. Zhang, C. Yu, L. Yu, P. Jiang, C. Wei, F. Qin and J. Shi, Dalton Trans., 2009, 823 DOI: 10.1039/B814321H

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