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Article Dans Une Revue Chemistry of Materials Année : 2018

Design of Near-Infrared-Absorbing Unsymmetrical Polymethine Dyes with Large Quadratic Hyperpolarizabilities

Simon Pascal
Sébastien Redon
Yann Bretonniere
Olivier Maury
Stephen Barlow
  • Fonction : Auteur
Chantal Andraud
  • Fonction : Auteur
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Résumé

Fifteen heptamethine dyes in which a tricyanofuran acceptor is linked to donors of different strength were synthesized, and their absorption, thermal, electrochemical, and second-order nonlinear optical properties were investigated. While the variation of the peripheral bulky substituents allowed a decrease of the intermolecular interactions in the solid state, subtle engineering of the heterocyclic donor provided dyes with electronic structures that varied between dipolar and cyanine-like (i.e. with little bond length alternation and with ground and excited states having similar dipole moment) and remarkably high quadratic hyperpolarizabilities (µβ 1.9) of up to 115,000×10-48 esu. 2
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Dates et versions

hal-01957768 , version 1 (11-11-2020)

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Simon Pascal, Yulia Getmanenko, Yadong Zhang, Iryna Davydenko, Minh Hoang Ngo, et al.. Design of Near-Infrared-Absorbing Unsymmetrical Polymethine Dyes with Large Quadratic Hyperpolarizabilities. Chemistry of Materials, 2018, 30 (10), pp.3410-3418. ⟨10.1021/acs.chemmater.8b00960⟩. ⟨hal-01957768⟩
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