Switching of molecular second-order polarisability in solution

被引:156
作者
Asselberghs, I
Clays, K
Persoons, A
Ward, MD
McCleverty, J
机构
[1] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England
[2] Univ Louvain, Dept Chem, B-3001 Louvain, Belgium
[3] Univ Sheffield, Dept Chem, Sheffield S3 7HF, S Yorkshire, England
关键词
D O I
10.1039/b401434k
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
Second-order nonlinear optical ( NLO) polarisabilities or first hyperpolarisabilities, beta, of molecules may be manipulated by reversibly modifying the properties of specific parts of active molecules, usually by on/off switching. This may involve reducing the donor capacity of the electron-rich fragment of a typical donor - acceptor species, D - A, by oxidation or protonation. Conversely, the acceptor behaviour of A may be altered by reduction, or by deprotonation. Alteration of the first hyperpolarisability may also involve structural or chemical modification of the bridging group, thereby interfering with the communication between D and A. Much of the article focuses on redox behaviour of NLO-active metal-containing compounds, mainly describing dipolar species in which the donor fragment containing a metal is oxidised, but giving examples of switching behaviour in octopolar species and of protonation/ deprotonation behaviour.
引用
收藏
页码:2831 / 2839
页数:9
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