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Very Large Second Order Non-Linear Optical Activity Shown by Heterocycle-Based Dicyanomethanide Zwitterions

Published online by Cambridge University Press:  10 February 2011

A. Abbotto ,
S. Bradamante ,
A. Facchetti ,
G. A. Pagani ,
I. Ledoux  and
J. Zyss
A. Abbotto
Affiliation:
Department of Materials Science, University of Milano, via Emanueli 15, 1–20126 Milano, Italy, pagani@icil64.cilea.it
S. Bradamante
Affiliation:
Department of Materials Science, University of Milano, via Emanueli 15, 1–20126 Milano, Italy, pagani@icil64.cilea.it
A. Facchetti
Affiliation:
Department of Materials Science, University of Milano, via Emanueli 15, 1–20126 Milano, Italy, pagani@icil64.cilea.it
G. A. Pagani
Affiliation:
Department of Materials Science, University of Milano, via Emanueli 15, 1–20126 Milano, Italy, pagani@icil64.cilea.it
I. Ledoux
Affiliation:
France Telecom - CNET, 196 av. H. Ravera, BP107, 92225, Bagneux Cedex, France
J. Zyss
Affiliation:
France Telecom - CNET, 196 av. H. Ravera, BP107, 92225, Bagneux Cedex, France
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Abstract

The new series of recently synthesized chromophores 2 - 6 in which a positively charged N-alkylpyridinium acceptor and a negatively charged dicyanomethanide donor are spaced by thiophene-based and/or ethylenic bridging units show dramatically enhanced first molecular hyperpolarizabilities (μβ as high as 27000 × 10−48 esu), in comparison with some of the best recently reported neutral systems 7 and 8.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 488: Symposium J – Electrical, Optical & Magnetic Properties of Organic IV , 1997 , 819
Copyright
Copyright © Materials Research Society 1998

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References

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