Theoretical and experimental investigation of electric field induced second harmonic generation in tetrathia 7 helicenes

Bossi, Alberto, Licandro, Emanuela, Maiorana, Stefano, Rigamonti, Clara, Righetto, Stefania, Stephenson, G. Richard, Spassova, Milena, Botek, Edith and Champagne, Benoît (2008) Theoretical and experimental investigation of electric field induced second harmonic generation in tetrathia 7 helicenes. The Journal of Physical Chemistry C, 112 (21). pp. 7900-7907. ISSN 1932-7447

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Abstract

In this paper, we report the first systematic experimental and theoretical investigation of the electric field induced second harmonic response of some tetrathia[7]helicene-based NLOphores. We studied six model compounds carrying the NO2, CH=CHCN, and COCF3 units as accepting groups on both the terminal thiophene positions as well as on the central benzene ring of the helicene backbone. These groups, known to be of medium and medium-strong accepting strength, allow tuning of both the electronic and structural properties of the helicenes studied. This experimental/theoretical study should set a milestone in addressing new structure-properties relationship of this class of nonconventional chiral chromophores able to show second order as well as third order NLO phenomena.

Item Type: Article
Additional Information: Bossi, Alberto Licandro, Emanuela Maiorana, Stefano Rigamonti, Clara Righetto, Stefania Stephenson, G. Richard Spassova, Milena Botek, Edith Champagne, Benoit
Faculty \ School: Faculty of Science > School of Pharmacy
Faculty of Science > School of Chemistry
Depositing User: Rachel Smith
Date Deposited: 29 Mar 2011 11:38
Last Modified: 21 Apr 2020 17:53
URI: https://ueaeprints.uea.ac.uk/id/eprint/27413
DOI: 10.1021/jp7117554

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