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Synthesis and nonlinear optical properties of some donor–acceptor oxadiazoles

✍ Scribed by Sabir H. Mashraqui; Rajesh S. Kenny; Shailesh G. Ghadigaonkar; Anu Krishnan; Mily Bhattacharya; Puspendu K. Das

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
258 KB
Volume
27
Category
Article
ISSN
0925-3467

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✦ Synopsis

Heterocyclic 1,3,4-oxadiazole moiety has been used as a new p-conjugation relay to prepare a number of donor-acceptor molecules carrying a p-electron-rich aromatic ring as a donor and either a p-nitrophenyl or a pyridine/pyridinium ring as an acceptor. Several of these oxadiazoles display significant second-order molecular nonlinearity, b (14-124 • 10 À30 esu) and provide the basis for future design of efficient nonlinear optical materials having the oxadiazole core.

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