Thermal Stable Retro-Crosslinking Polymers Based on "Diels-Alder" Reaction which Containing a New AZO Chromophore

doi:10.7517/j.issn.1674-0475.2007.05.327

Imaging Science and Photochemistry ›› 2007, Vol. 25 ›› Issue (5): 327-332.DOI: 10.7517/j.issn.1674-0475.2007.05.327

Thermal Stable Retro-Crosslinking Polymers Based on "Diels-Alder" Reaction which Containing a New AZO Chromophore

WANG Zhi-peng^1,2, BO Shu-hui^1,2, ZHAO Wen-ke^1,2, LIU Jia-lei^1,2, WANG Jian-she^1,2, QIU Lin¹, ZHEN Zhen¹, LIU Xin-hou¹

1. Laboratory of Organic Optoelectronic Functional Materials and Molecular Engineering, TechnicalInstitute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100080, P. R. China;
2. Graduated University of Chinese Academy of Sciences, Beijing, 100049, P. R. China

Received:2007-05-28 Revised:2007-06-01 Online:2007-09-23 Published:2007-09-23

Abstract

Abstract: Polymers NLO1-P1 and NLO1-P2 containing the new azo chromophore were designed and prepared, which possess crosslinking ability through retro-"Diels-Alder" and "Diels-Alder" reaction. Because the crosslinking groups of furan-capped maleimide and furan-3-carboxylic acid were designed covalently attaching to the two kinds of polymers NLO1-P1 and NLO1-P2, respectively, the chromophore content in the polymers were greatly increased (32.1% in NLO1-P1 and 44.4% in NLO1-P2).These polymer systems were crosslinking in low temperature (below 70 ℃) and non-crosslinking in high temperature (about 150 ℃). The crosslinking characteristic could resolve the problem "nonlinearity-stability tradeoff" which consists in the traditional crosslinking electro-optic polymer.The thermal stability and thermal reversible character of the network polymer were confirmed through thermal gravimetric analysis (TGA) and differential scanning calorimeter (DSC).

Key words: chromophore, electro-optic materials, second-order nonlinearity, crosslinkingpolymer

CLC Number:

WANG Zhi-peng, BO Shu-hui, ZHAO Wen-ke, LIU Jia-lei, WANG Jian-she, QIU Lin, ZHEN Zhen, LIU Xin-hou. Thermal Stable Retro-Crosslinking Polymers Based on "Diels-Alder" Reaction which Containing a New AZO Chromophore[J]. Imaging Science and Photochemistry, 2007, 25(5): 327-332.

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Thermal Stable Retro-Crosslinking Polymers Based on "Diels-Alder" Reaction which Containing a New AZO Chromophore

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