Please use this identifier to cite or link to this item:
Title: Non-Photoisomerizable Butterfly Shaped Tetrasubstituted Azobenzenes: Synthesis and Photophysical Studies
Authors: Raman, A
Neelambra, AU
Karunakaran, V
Easwaramoorthi, S
Keywords: azobenzenes
steric crowding
Issue Date: 2020
Publisher: Royal Society of Chemistry
Citation: New Journal of Chemistry;44(21):8818-8822.
Abstract: The trans-azobenzene (AB) substituted derivatives with bulky carbazole (1), phenothiazine (2), and phenyl (3) have been synthesized to understand the effect of steric crowding around the –N[double bond, length as m-dash]N– linkage on the photoisomerization process. The substituents maintain orthogonality to the azobenzene plane and the electronic properties exhibit a combination of individual chromophores. Irradiation of 1 and 2 with various light sources including a 365 nm pen-ray lamp, and a 150 W Xe–Hg lamp, and even exposure to sunlight for a week does not yield the cis isomer revealing the exceptional photostability of the synthesized azobenzene derivatives. These studies suggest that possessing steric crowding around the azo linkage would be a potential strategy to develop photostable azobenzene-based functional materials.
Appears in Collections:2020

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.