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Synthesis and Characterization of Azobenzene-Based Gold Nanoparticles for Photo-Switching Properties

Biswas, Tapan Kumar and Sarkar, Shaheen M. and M. M., Yusoff and Lutfor, M. R. (2016) Synthesis and Characterization of Azobenzene-Based Gold Nanoparticles for Photo-Switching Properties. Journal of Molecular Liquids, 214. pp. 231-237. ISSN 0167-7322

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Abstract

A series of new azobenzene based thiolated liquid crystals modified with gold nanoparticles were synthesized and characterized using a different mode of delegated tools e.g. FTIR, NMR and FESEM–EDX measurements for the structural properties of synthesized compounds. Polarized optical microscopy studies have revealed all the studied compounds having liquid crystalline properties, as a typical nematic phase. These liquid crystal capped gold nanoparticles' size was determined by TEM experiment. In addition, azobenzene-based gold nanoparticles containing flexible spacers showed photochromic behavior upon UV irradiation. These molecules exhibited strong photoisomerisation behavior in solutions and their trans to cis isomerisation took about 44 s whereas the reverse process almost took place ranging from 82 to 125 min.

Item Type: Article
Uncontrolled Keywords: Photoisomerisation; Gold nanoparticles; Cis–trans isomerization; Photoswitching
Subjects: Q Science > Q Science (General)
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Prof. Dr. Mashitah Mohd Yusoff
Date Deposited: 22 Feb 2017 06:20
Last Modified: 31 Jan 2018 01:04
URI: http://umpir.ump.edu.my/id/eprint/16378
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