Synthesis and Characterization of Bifunctional Organic-Glasses Based on Diphenylhydrazone and Barbituric Acid Derivative for Photorefractive Application

Bulletin of the Korean chemical society

Dong Hoon Choi¹  Chil Sung Choi¹  Sang Ho Lee¹  Ki Hong Park¹  Nakjoong Kim¹ 

关键词: Photorefractive;    Diphenyl hydrazone;    Bifunctional;    Organic-glasses;    Amorphous molecule;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

A series of amorphous molecules that possess both photoconductive and electro-optic properties was synthesized in order to investigate photorefractive properties of bifunctional organic-glasses. Diethylaminobenzaldehyde-diphenylhydrazone was covalently attached to 5-(4-diethylamino-benzylidene)-1,3-dimethylpyrimidine-2,4,6-trione through a flexible alkyl chain (3, 4, 5, 6 and 10 carbons) containing two ether linkages. The longer linkage not only lowered the glass transition temperature (T_g) of the molecules, but also allowed faster orientation of the chromophore. To examine the photorefractive properties, a 50 レm-thick film was prepared from the mixture of a bifunctional molecule, butyl benzyl phthalate, and C₆₀. The photoconductivity of this composite was as high as 8.01 �? 10^-12 S/cm at 60 V/ レm, and the maximum diffraction efficiency ( �?_max) of 50 レm-thick film was about 5% at 80 V/ レm.

【 授权许可】

Unknown