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Optical second-harmonic generation from oligothiophene films

✍ Scribed by F. Geiger; G. Marowsky

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 360 KB
Volume: 254
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(96)00319-3

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✦ Synopsis

We have studied surface second-harmonic generation from thin layers of several oligothiophenes deposited by vacuum sublimation on fused silica substrates, Although these oligothiophenes have a symmetric "rr-electron system, they show a second-harmonic response which is strongly dependent on the conjugation length. Their average orientation was also determined by analyzing the polarization dependence of the second-harmonic signal.

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