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- Title
Synthesis and Light Induced Characteristics of Siloxane Substituted Azobenzene: An Application for Optical Storage Device.
- Authors
Yuvaraj, A. R.; Rahman, Md. Lutfor; Mohd Yusoff, Mashitah
- Abstract
The light induced behaviour of siloxane substituted azobenzene compounds in the presence of alkylene spacers is reported for the first time. Firstly, these photosensitive compounds were synthesized and elucidated the molecular structure by spectral analysis such as NMR, FTIR, and UV/Vis. Photoisomerization effect was evaluated in solution and also in nematic phase. The photosaturation occurred exactly at 29 seconds, whereas thermal back relaxation was observed ranging from 19.8 to 23.8 hours. Long duration of the thermal back relaxation is due to the presence of sterically hindered siloxane group substituted to the azobenzene molecules. Decrease in the duration of cis-trans isomerization was found when the number of alkylene spacers was increased. These siloxane based azobenzene derivatives are useful for the fabrication of optical storage device and molecular switches.
- Subjects
SILOXANES; AZOBENZENE; OPTICAL disk drives; LIGHT; ALKYLENES; MOLECULAR structure; SPECTRUM analysis
- Publication
Spectroscopy: An International Journal, 2016, p1
- ISSN
0712-4813
- Publication type
Article
- DOI
10.1155/2016/4715230