Studies on the Relationship Between Structure and Properties of New Second-order Nonlinear Optical Hybrid Material

Abstract

Abstract: A new type of organic chromophore group/SiO₂-TiO₂ second-order nonlinear optical(NLO) materials has been obtained by sol-gel process. The research by X-ray energy dispersion spectrum(EDS) and Transmission electronic microscope(TEM) shows that the hybrid sol particles consist of SiO₂, TiO₂ and the organic chromophore group, and the size of the particles is about 20-80 nm. The second-order nonlinear optical polarizability χ⁽²⁾ of the poled hybrid films is 1.43×10^-7 esu according to one dimensional rigid oriented gas model(1DROGM). The poled film exhibits a good orientation stability, and its glass transition temperature can reach 469 K. The crystallization and micro-structure of hybrid films were analyzed by X-ray diffraction (XRD) and atom force microscope(AFM), and the mesostructure was discovered in the NLO hybrid films.

Key words: Hybrid material, Second-order nonlinear optic property, Organic-inorganic hybrid material, Orientation stability, Crystallization, Micro-structure

CLC Number:

TG146.4

TrendMD:

LI Xu-Hua, YUAN Qiao-Long, WANG De-Ning . Studies on the Relationship Between Structure and Properties of New Second-order Nonlinear Optical Hybrid Material[J]. Chem. J. Chinese Universities, 2002, 23(12): 2292.

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Studies on the Relationship Between Structure and Properties of New Second-order Nonlinear Optical Hybrid Material

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