Synthesis and second-order nonlinear optical properties of new copper(II), nickel(II), and zinc(II) Schiff-base complexes. Toward a role of inorganic chromophores for second harmonic generation

被引：182

作者：

Lacroix, PG

DiBella, S

Ledoux, I

机构：

[1] CNRS,CHIM COORDINAT LAB,F-31077 TOULOUSE,FRANCE

[2] UNIV CATANIA,DIPARTIMENTO SCI CHIM,I-95125 CATANIA,ITALY

[3] CTR NATL ETUD TELECOMMUN,LAB BAGNEUX,F-92220 BAGNEUX,FRANCE

来源：

CHEMISTRY OF MATERIALS | 1996年 / 8卷 / 02期

关键词：

D O I：

10.1021/cm950426q

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：

A new Schiff-base ligand based on the condensation of diaminomaleonitrile and 4-(diethylamino)salicylaldehyde is reported with its copper, nickel, and zinc complexes. Their second-order nonlinear optical properties are investigated by electric field induced second harmonic (EFISH) and ZINDO quantum-chemical calculations to probe the role of the metal center in the nonlinearity. All the complexes exhibit a second-order nonlinear response that is larger than that of the ligand with an hyperpolarizability (beta) value of 400 (+/-100) 10(-30) cm(5) esu(-1) for the zinc derivative at 1.34 mu m. Theoretical calculations indicate that the two-level model is inadequate to describe the nonlinearity in such systems.

引用

页码：541 / 545

页数：5

共 74 条

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