2ND-ORDER NONLINEAR-OPTICAL EFFECTS IN NOVEL POLYMETHACRYLATES CONTAINING A MOLECULAR-IONIC CHROMOPHORE IN THE SIDE-CHAIN

被引：16

作者：

CHOI, DH ^{[1
]}

WIJEKOON, WMKP ^{[1
]}

KIM, HM ^{[1
]}

PRASAD, PN ^{[1
]}

机构：

[1] SUNY BUFFALO, DEPT CHEM, PHOTON RES LAB, BUFFALO, NY 14214 USA

来源：

CHEMISTRY OF MATERIALS | 1994年 / 6卷 / 02期

关键词：

D O I：

10.1021/cm00038a023

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have synthesized new glassy methacrylate polymers containing a molecular-ionic (N-methylpyridinium) nonlinear optical chromophore in the side chain. A bulky tetraphenylborate (TPB) counterion was substituted at the salt unit in order to reduce the migration of the counterion during the process of poling. It was found that the poling-induced chromophore alignment of the TPB-containing polymer is significantly improved compared to that of the iodide or bromide containing polymers. The second-order nonlinear optical susceptibility, chi(2)(-2omega;omega,omega), of the poled TPB-containing polymer is approximately 5 times larger than that of the corresponding iodide analogue. Also, the temporal stability of the poled structure of the TPB-containing polymer is found to be considerably improved over that of the analogous iodide containing polymer.

引用

页码：234 / 238

页数：5

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