Hybrid Nonlinear Optical Materials Containing Imidazole Chromophore through the Sol-Gel Process

✍ Scribed by Yuanjing Cui; Guodong Qian; Lujian Chen; Zhiyu Wang; Minquan Wang

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 136 KB
• Volume: 28
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200700375

✦ Synopsis

Abstract

A new sol‐gel hybrid film based on heterocyclic chromophore, namely 2‐[4′‐(N‐ethyl‐N‐hydroxyethyl)amino phenyl azo]‐4,5‐dicyanoimidazole (IZ), has been synthesized and characterized. The hybrid system possesses a high chromophore loading density up to 65 wt.‐% without observing a phase separation. The initial decomposition temperatures of the chromophore and hybrid material were determined to be 260 and 272 °C, respectively. Poled films show a fairly high and stable nonlinear optical (NLO) response, even at an elevated temperature.

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