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✦   LIBER   ✦

Novel Polymers with Inherent Conductivity and Enhanced Second-Order NLO Activity

✍ Scribed by Massimiliano Lanzi; Luisa Paganin; Gaia Cesari

Book ID
102483767
Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
198 KB
Volume
209
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

A new polythiophene derivative bearing an azobenzene substituent at the end of a ethylenic side‐chain was synthesized and characterized by FT‐IR spectroscopy, ^1^H and ^13^C NMR spectroscopy, DSC, TGA, XRD, and UV‐vis spectroscopy. Its electrical conductivity was measured and its second‐order NLO activity was by SHG. Structure‐property relations were elucidated by comparison with a similar polymer only partially substituted by the NLO‐active chromophore. The molecular design of the chromophoric system allows high and stable non‐linear coefficients d~33~ to be obtained, making these polymers suitable for the construction of second‐harmonic generators with improved efficiency and life‐time.

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📜 SIMILAR VOLUMES

Nonlinear optical (NLO) polymers. IV. Se
Nonlinear optical (NLO) polymers. IV. Second-order optical nonlinearity of NLO polyurea and copolyurea with NLO dipole moments aligned transverse to the main backbone
✍ Wataru Sakai; Koki Chiga; Naoto Tsutsumi 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 211 KB 👁 1 views

This article presents the molecular orientation and second-order optical nonlinearity of newly prepared polyureas and copolyurea with dipole moments aligned transverse to the main backbone. Nonlinear optical (NLO) polyureas, TPU and TPU2, were prepared from 2,4-diamino-4Ј-nitroazobenzene (2R-DIAMINE

Convenient Synthesis and Enhanced Second
Convenient Synthesis and Enhanced Second-order Nonlinear Optical Property of a Novel Hyperbranched Polymer
✍ Zhi-Chao Zhu; Zhong-An Li; Qian-Qian Li; Qi Zeng; Zhen Li; Cheng Ye; Jin-Gui Qin 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 55 KB

## Abstract A novel hyperbranched polymer (**3**) was prepared by copolymerization of tri‐aldehyde moieties with azo chromophores having two active methelene groups, from "A~2~+B~3~" approach based on simple Kneovenagel reaction. For comparison, its analogue linear polymer (**5**) was also synthesi