Effects of side-chain modification on poling efficiency of highly polarizable nonlinear optical chromophores in electro-optical polymers

Sen Liu; Takafumi Sassa; Hong Ma; Alex K.-Y. Jen; Larry Raymond Dalton

doi:10.1117/12.452067

18 December 2002 Effects of side-chain modification on poling efficiency of highly polarizable nonlinear optical chromophores in electro-optical polymers

Sen Liu, Takafumi Sassa, Hong Ma, Alex K.-Y. Jen, Larry Raymond Dalton

Author Affiliations +

Proceedings Volume 4798, Linear and Nonlinear Optics of Organic Materials II; (2002) https://doi.org/10.1117/12.452067
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Monte Carlo simulations suggest that the functionalization of bulky side groups on highly efficient nonlinear optical chromophores will improve the poling efficiency of the electro-optic polymers by reducing the intermolecular electrostatic interactions from these large dipole moments (μ) chromophores. However, very little information has been provided from theoretical simulation to describe the optimal functionality of the bulky side group needed on individual chromophore in order to be compatible with its environment, e.g. neighboring chromophores and polymer matrix. To further understand the influence of side-chain modification of chromophore on both chromophore-chromophore and chromophore-polymer matrix interactions, we have synthesized a series of highly polarizable nonlinear optical chromophores with various side-chain modifications in terms of shape, rigidity and functionality. Linear E-O coefficients (r₃₃) of these functionalized chromophores in amorphous poly(carbonate) were evaluated using the contact poling technique. Several important chromophore and polymer parameters, such as, steric hindrance and free volume were used to explain the overall results from chromophore-chromophore and chromophore-polymer matrix interactions on E-O property.

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Sen Liu, Takafumi Sassa, Hong Ma, Alex K.-Y. Jen, and Larry Raymond Dalton "Effects of side-chain modification on poling efficiency of highly polarizable nonlinear optical chromophores in electro-optical polymers", Proc. SPIE 4798, Linear and Nonlinear Optics of Organic Materials II, (18 December 2002); https://doi.org/10.1117/12.452067

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