Aliphatic/aromatic spacers based azo dye dimers: synthesis and application for optical storage devices

作者：Yuvaraj A R; Mei Gan Siew; Kulkarni Ajaykumar D; Mashitah M Y; Hegde Gurumurthy^*

来源：RSC Advances, 2014, 4(92): 50811-50818.

DOI：10.1039/c4ra08219b

The photoisomerization effect of new bent-shaped azo dyes in the presence of aliphatic and aromatic spacers is reported for the first time. The synthesized compounds with n-hexane and benzene as central moieties were characterized by different spectral analytical techniques such as H-1-NMR, C-13-NMR, FTIR and UV-Vis. They revealed the photoisomerization effect in solution and on the solid cells as well. In solution, the E-Z and Z-E isomerization occurred in around 17-18 seconds and 7-13 hours, respectively. The dramatic variation in back relaxation is speculated to take place due to the nature of the spacers involved in the system. The synthesized materials are expected to be more useful in optical storage devices.

• 出版日期2014