Tang, Xinde published the artcileEffect of the terminal substituent of azobenzene on the properties of ABA triblock copolymers via atom transfer radical polymerization, Safety of 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (2007), 45(22), 5190-5198, database is CAplus.
The effect of the terminal substituent of azobenzene on the properties of ABA triblock copolymers was studied. For this study, three kinds of azobenzene-containing monomers with different terminal substituents-6-[4-(4-methoxyphenylazo)phenoxy]hexyl methacrylate, 6-[4-(4-ethoxyphenylazo)phenoxy]hexyl methacrylate, and 6-[4-(4-nitrophenylazo)phenoxy]hexyl methacrylate-were used to synthesize ABA triblock copolymers PMMAzo25-PEG13-PMMAzo25/PMMAzo12-PEG13-PMMAzo12, PEMAzo14-PEG13-PEMAzo14, and PNMAzo14-PEG13-PNMAzo14, resp., by atom transfer radical polymerization (PMMAzo is poly{6-[4-(4-methoxyphenylazo)phenoxy]hexyl methacrylate}, PEMAzo is poly{6-[4-(4-ethoxyphenylazo)phenoxy]hexyl methacrylate}, and PNMAzo is poly{6-[4-(4-nitrophenylazo)phenoxy]hexyl methacrylate}). These copolymers were characterized with 1H NMR spectroscopy and gel permeation chromatog. and exhibited controlled mol. weights and narrow mol. weight distributions. Differential scanning calorimetry and polarizing optical microscopy showed that these copolymers had mesophases. PMMAzo25-PEG13-PMMAzo25 and PMMAzo12-PEG13-PMMAzo12 had a smectic mesophase and a nematic mesophase, whereas both PEMAzo14-PEG13-PEMAzo14 and PNMAzo14-PEG13-PNMAzo14 had a nematic mesophase. This demonstrated that the liquid-crystalline properties of these copolymers highly depended on the terminal substituent of azobenzene. The photoresponsive behavior of these copolymers was also studied in THF solutions, and the influence of the terminal substituents attached to azobenzene was studied.
Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 135529-02-1. 135529-02-1 belongs to esters-buliding-blocks, auxiliary class azo,Alkenyl,Benzene,Ester,Ether, name is 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, and the molecular formula is C14H18BNO2S, Safety of 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics