Photoisomerization of azobenzene moiety in crosslinking polymer materials

Hui Wang; Wei-Qiang Chen; Feng Jin; Xian-Zi Dong; Zhen-Sheng Zhao; Xuan-Ming Duan

doi:10.1117/12.929146

11 October 2012 Photoisomerization of azobenzene moiety in crosslinking polymer materials

Hui Wang, Wei-Qiang Chen, Feng Jin, Xian-Zi Dong, Zhen-Sheng Zhao, Xuan-Ming Duan

Proceedings Volume 8474, Optical Processes in Organic Materials and Nanostructures; 847414 (2012) https://doi.org/10.1117/12.929146
Event: SPIE Organic Photonics + Electronics, 2012, San Diego, California, United States

Abstract

In this study, a series of acryloyloxy-substituted azobenzene derivatives, 3-(tert-butyl)-4,4’-bisacryoloxy-azobenzene (tBu-Azo-AO), 3-(tert-butyl)-4,4’-bis[3-(acryoloxy)propoxy]-azobenzene (tBu-Azo-AO3) and 3-(tert-butyl)-4,4’-bis[6-(acryoloxy)hexyloxy]-azobenzene (tBu-Azo-AO6) were synthesized and employed as monomers to prepare polymer films by copolymerizing dipentaerythritol hexaacrylate (DPE-6A) and methyl methacrylate (MMA), respectively. When exposed to a nanosecond laser beam at the wavelength of 355 nm, ultraviolet-visible (UV-Vis) absorption spectra of the resultant polymer films with different irradiation time were monitored. On the basis of the absorbance of the π-π* electronic transition, the kinetics of trans-to-cis photoisomerization of three kinds of azobenzene moieties were demonstrated and found to be influenced by both the pump energy and azobenzene concentration.

Citation Download Citation

Hui Wang, Wei-Qiang Chen, Feng Jin, Xian-Zi Dong, Zhen-Sheng Zhao, and Xuan-Ming Duan "Photoisomerization of azobenzene moiety in crosslinking polymer materials", Proc. SPIE 8474, Optical Processes in Organic Materials and Nanostructures, 847414 (11 October 2012); https://doi.org/10.1117/12.929146

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