Hyperbranched photo responsive and liquid crystalline azo??siloxane polymers synthesized by click chemistry

S Pandey, SP Mishra, B Kolli, T Kanai…

Index: Pandey, Someshwarnath; Mishra, Sarada P.; Kolli, Balakrishna; Kanai, Tapan; Samui, Asit B. Journal of Polymer Science, Part A: Polymer Chemistry, 2012 , vol. 50, # 13 p. 2659 - 2668

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Citation Number: 14

Abstract

Abstract Three new types of hyperbranched photoactive liquid crystalline siloxane polymers containing azo moieties were synthesized using click chemistry methodology. The polymers were soluble in most of the polar solvents like chloroform, tetrahydrofuran, dimethylformamide, dimethyl sulphoxide and dichloromethane. The molecular weights of the polymers were in the range of 9000–12,000 g mol− 1. The trans-cis photoisomerization of ...