Synthesis and characterisation of some donor-acceptor substituted butadienes for second harmonic generation

被引：10

作者：

Das, S ^{[1
]}

George, M ^{[1
]}

Mathew, T ^{[1
]}

Asokan, CV ^{[1
]}

机构：

[1] MAHATMA GANDHI UNIV, SCH CHEM SCI, KOTTAYAM 686560, KERALA, INDIA

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 1996年 / 04期

关键词：

D O I：

10.1039/p29960000731

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The synthesis and photophysical properties of some donor-acceptor linked butadiene derivatives 6a,b and 7a,b are described. Compounds 6a and 6b show anomalous red-shifted fluorescence bands in polar solvents which can be attributed to the formation of twisted intramolecular charge transfer (TICT) excited states. Powder second harmonic generation (SHG) measurements of these molecules indicated intensities of 0.45 times that of urea for 6a and 7a while negligible intensities are found for 6b and 7b.

引用

页码：731 / 736

页数：6

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