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Proceedings Paper

Symmetry loss of heptamethine cyanines: an example of dipole generation by ion-pairing effect
Author(s): Simon Pascal; Pierre-Antoine Bouit; Boris Le Guennic; Stéphane Parola; Olivier Maury; Chantal Andraud
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Paper Abstract

The development of near-infrared dyes for third order nonlinear optical applications and particularly for optical power limiting at telecommunications wavelengths triggered the revival of old dyes like polymethine dyes featuring an odd number of carbon atoms. Currently numerous research endeavor is focused on the understanding of their spectroscopy in solution and in the solid state in close relationship with their electronic structure. In this context, the dramatic effect of the counter ion on the heptamethine optical properties was highlighted depending on the dissociating character of the media. The unusual consideration of this parameter allows us to explore the so-called “cyanine limit” and to finely tune the heptamethine absorption in view of future use as dopant in a material for optical limiting applications.

Paper Details

Date Published: 6 March 2013
PDF: 7 pages
Proc. SPIE 8622, Organic Photonic Materials and Devices XV, 86220F (6 March 2013); doi: 10.1117/12.2008220
Show Author Affiliations
Simon Pascal, Lab. de Chimie, CNRS, Ecole Normale Supérieure de Lyon (France)
Pierre-Antoine Bouit, Lab. de Chimie, CNRS, Ecole Normale Supérieure de Lyon (France)
Boris Le Guennic, Institut des Sciences Chimiques de Rennes, CNRS, Univ. de Rennes (France)
Stéphane Parola, Lab. de Chimie, CNRS, Ecole Normale Supérieure de Lyon (France)
Olivier Maury, Lab. de Chimie, CNRS, Ecole Normale Supérieure de Lyon (France)
Chantal Andraud, Lab. de Chimie, CNRS, Ecole Normale Supérieure de Lyon (France)


Published in SPIE Proceedings Vol. 8622:
Organic Photonic Materials and Devices XV
Christopher E. Tabor; François Kajzar; Toshikuni Kaino; Yasuhiro Koike, Editor(s)

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