Improved Electro-Optic Effect by Hyperbranched Chromophore Structures in Side-Chain Polyimide

✍ Scribed by Jung Y. Do; Seung K. Park; Jung-Jin Ju; Suntak Park; Myung-Hyun Lee

• Book ID: 102482435
• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 130 KB
• Volume: 204
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.200390006

✦ Synopsis

Abstract

Hyperbranched structures of chromophores were developed to improve the nonlinearity of optical polymers. Macromolecules with 3‐[p‐(2′‐hydroxyethylmethylamino)styryl]‐1‐dicyanomethylene‐5,5‐dimethylcyclohex‐2‐ene (AIDC) were prepared using 3,5‐dihydroxyphenyl groups as building blocks. When the molecule was incorporated into a polyimide backbone (PI‐DAIDC101), a high electro‐optic coefficient was obtained, giving 32 pm · V^−1^ at 1.55 μm. The nonlinearity is at least doubly enhanced in comparison with that of conventional side chain‐optical polyimides. This is mainly attributable to an increased polarizing efficiency derived from the chromophore structures.

The structure of the linear polyimide backbone (PI‐OH) and the chromophore‐attached optical polyimide (PI‐DAIDC101).

imageThe structure of the linear polyimide backbone (PI‐OH) and the chromophore‐attached optical polyimide (PI‐DAIDC101).