Novel pendant azobenzene/polymer systems for second harmonic generation and optical data storage

Synthesis, molecular structure, FT-IR, FT-Raman and XRD spectroscopic investigations of (E)-1-(5-((4-bromophenyl)diazenyl)-2- hydroxyphenyl)ethanone: A comparative DFT study

“…For instance, in biological systems, photo-induced dynamics of azo compounds changes enzyme activity and function of proteins [24,25]. Nowadays, azobenzene based-polymers have given promise in using as storage devices of optical data as consequence of significant non-linear optics feature [26][27][28][29]. For all these reasons, they have recently attracted a lot of attention in experimental and theoretical studies because of undergoing cis-trans photoisomerization in photoexcited state.…”

Laser protection with optical limiting by combination of polymers with dyes

“…Porphyrins and phthalocyanines are typical dyes for optical limiting in which RSA is important . Azobenzenes, polycyanines, or perylene derivatives are other dyes, whose nonlinear optical qualities were examined In case of azobenzene, the involved mechanisms are wavelength dependent, from 600 to 1200 nm two‐photon absorption is important .…”

“…Many dyes like phthalocyanines with conjugated π‐systems tend to aggregate, which makes them less effective . Aggregation is also a common problem during the synthesis of guest–host filters with several azo dyes in polymers . Azophloxine and Eosin B also include conjugated π‐systems and are so prone to aggregation, steric hindrance is a possibility to avoid this .…”

Advances in understanding the photoresponsive behavior of azobenzenes substituted with strong electron withdrawing groups

“…Azobenzene and its derivatives are fascinating molecules that have numerous applications in the field of nonlinear optics [1][2][3][4][5], surface relief gratings [1,6], photoswitching [7], optical data storage [8], photoprobes [9] and liquid crystals alignment [10]. The key to the interesting applications of azobenzenes is the facile and reversible isomerization of the azo bond, between the more thermally stable E configuration and the meta-stable Z form [11][12][13][14][15].…”