Second harmonic generation in push-pull ethylenes: Influence of chirality and hydrogen bonding

被引：29
|
作者：
Mohanalingam, K [1 ]
Nethaji, M [1 ]
Das, PK [1 ]
机构：
[1] INDIAN INST SCI, DEPT INORGAN & PHYS CHEM, BANGALORE 560012, KARNATAKA, INDIA
来源：
JOURNAL OF MOLECULAR STRUCTURE | 1996年 / 378卷 / 03期
关键词：
hydrogen bonding; chirality; second harmonic generation; push-pull ethylene;
D O I：
10.1016/0022-2860(95)09180-7
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：
The effect of chiral substituents and hydrogen bonding functional groups on the microscopic and macroscopic second-order non-linearities in some donor-acceptor substituted ethylenes has been investigated. It appears that extensive intramolecular and intermolecular hydrogen bonding helps to improve both the microscopic hyperpolarizability (beta) as well as the powder second harmonic generation (SHG) efficiency in these compounds. The substitution of the chiral alpha-methylbenzylamine donor guarantees a non-centrosymmetric structure. Cocrystallization with triphenylphosphine oxide (TPPO) does not appear to yield better SHG efficiency in the alpha-methylbenzylamine substituted ethylene compound which has an extended hydrogen bonding network.
引用
收藏
页码：177 / 188
页数：12
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