SYNTHESIS AND NONLINEAR-OPTICAL PROPERTIES OF SOME ORGANIC SELF-ASSEMBLED FILMS ON HYDROXYLATED SUBSTRATE SURFACES

被引：11
|
作者：
ZHANG, XQ
YOU, XZ
MA, SH
WEI, Y
机构：
[1] NANJING UNIV,INST COORDINAT CHEM,NANJING 210093,PEOPLES R CHINA
[2] FUDAN UNIV,DEPT PHYS,SHANGHAI 200433,PEOPLES R CHINA
来源：
JOURNAL OF MATERIALS CHEMISTRY | 1995年 / 5卷 / 04期
关键词：
D O I：
10.1039/jm9950500643
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：
Films of some small molecules on hydroxylated silica surfaces have been prepared successfully by the self-assembly technique, using the condensation of the CHO group of 4-substituted benzaldehyde with the NH2 group of 4-substituted aniline derivatives. Second-harmonic generation (SHG) was observed in all the monolayers of the chromophores and changed with different pi-electron systems. The maximum chi((2)) was 7.9 X 10(-10) esu and the orientation angles of the chromophore dipoles of all the films were 33-38 degrees. This method is capable of generating multilayer films. For a Z-type multilayer, the SHG signal increases quadratically with the number of chromophore layers. The films have high structural stability.
引用
收藏
页码：643 / 647
页数：5
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