Further improvement of the macroscopic NLO coefficient and optical transparency of hyperbranched polymers by enhancing the degree of branching
Literature Information
Publication Date
2014-04-14
DOI
10.1039/C4PY00419A
Impact Factor
5.582
Authors
Wenbo Wu, Zhen Li
View Original
Abstract
In this paper, two new second-order nonlinear optical (NLO) hyperbranched polytriazoles (HP1 and HP2) containing nitro azobenzene as the chromophore were successfully prepared, through the AB4-type click polymerization under copper(I) catalysis. Thanks to the AB4-type branched monomer, the degree of branching (DB) of HP1 was improved to 0.691, much larger than that of its analogue, HPS1 (0.457), which was derived from an AB2-type monomer. The solubility, optical transparency and NLO coefficient of HP1 were all improved in comparison with those of HPS1, due to the better site-isolation effect. Furthermore, pentafluorophenyl rings were utilized as isolation groups to further enhance the NLO effect in HP2, and the d33 value and the d33(ā) value of HP2 were tested to be as high as 136 pm Vā1 and 28 pm Vā1, respectively.
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Source Journal
Polymer Chemistry
CiteScore:
8.6
Self-citation Rate:
7.3%
Articles per Year:
457
Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.
Recommended Compounds
Tris(2-ethylhexyl) 4,4',4''-(1,3,5-triazine-2,4,6-triyltriimino)tribenzoate
CAS Number:
88122-99-0
Molecular Formula:
C48H66N6O6
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