Azomethines with nonlinear optical properties and polyesters covalently functionalized with them. Syntheses with nitriles IC

被引：15

作者：

Dworczak, R ^{[1
]}

Fabian, WMF ^{[1
]}

Kieslinger, D ^{[1
]}

Junek, H ^{[1
]}

机构：

[1] GRAZ UNIV,INST PHYS EXPT,A-8010 GRAZ,AUSTRIA

来源：

DYES AND PIGMENTS | 1997年 / 34卷 / 01期

关键词：

AM1; calculations; EFISH measurements; polyester dyes; SCRF calculations; second harmonic generation; ZINDO calculations;

D O I：

10.1016/S0143-7208(96)00055-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Polyesters with covalently bound azomethine and carbonanalogous dye moieties were obtained by polymer analogous reactions. Their nonlinear optical properties were examined by electric field induced second harmonic generation measurements and compared with corresponding monomeric dyes. All of them had maximum absorption wavelengths between 400 and 546 nm. Values for mu beta (dipole moment mu, molecular hyperpolarizability beta) reached 290x10(-68) Cm-5/V. Quantum chemical calculations indicate the existence of various conformers of the dyes with large differences in their nonlinear optical properties. Furthermore, the calculations also point to a profound sensitivity of the molecular hyperpolarizability to environmental (solvent) effects amounting to an order of magnitude. (C) 1997 Elsevier Science Ltd.

引用

页码：13 / 23

页数：11

共 18 条

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