title: Cyclic side-chain phenylazo naphthalene polymers: enhanced fluorescence emission and surface relief grating formation.
abstract: Well-defined cyclic-polymers (cyclic-PAzoMMAs), bearing side-chain phenylazo naphthalene chromophore, were successfully synthesized by the combination of atom transfer radical polymerization (ATRP) and copper(I)-catalyzed azide/alkyne cycloaddition "click" reaction, as verified by GPC, (1) H NMR, FTIR, and MALDI-TOF mass spectrometry. The cyclic-PAzoMMA showed higher glass transition temperatures than the linear-PAzoMMA with the same molecular weight. Interestingly, the cyclic-PAzoMMA exhibited deeper modulation depth (M.D.) induced by SRG, larger value of the photoinduced birefringence, increased fluorescence emission, and longer fluorescence lifetime in comparison with its linear counterpart.
authors.affiliation: Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
authors.forename: Hao
authors.initials: H
authors.lastname: Zhang
authors.forename: Nianchen
authors.initials: N
authors.lastname: Zhou
authors.forename: Xing
authors.initials: X
authors.lastname: Zhu
authors.forename: Xinrong
authors.initials: X
authors.lastname: Chen
authors.forename: Zhengbiao
authors.initials: Z
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Jian
authors.initials: J
authors.lastname: Zhu
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Hu
authors.forename: Xiulin
authors.initials: X
authors.lastname: Zhu
mesh_terms: D000480:Alkynes / Q000737:chemistry; D001386:Azides / Q000737:chemistry*; D005453:Fluorescence; D015394:Molecular Structure; D009281:Naphthalenes / Q000737:chemistry*; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D000480:Alkynes; D001386:Azides; D009281:Naphthalenes; D011108:Polymers; C031721:naphthalene