Options
Combination of Cyanine Behaviour and Giant Hyperpolarisability in Novel Merocyanine Dyes: Beyond the Bond Length Alternation (BLA) Paradigm
Date Issued
01-09-2015
Author(s)
Indian Institute of Technology, Madras
Pandey, Ravindra
Stolte, Matthias
Ghosh, Sampa
Castet, Frédéric
Würthner, Frank
Das, Puspendu Kumar
Blanchard-Desce, Mireille
Abstract
Merocyanine dyes that exhibit antithetic cyanine-like behaviour and giant first-order hyperpolarisability (β) values have been designed. These cyanine-type dyes open up an intriguing route towards molecular-based electro-optic materials as well as new second-harmonic generation dyes for imaging. Balanced properties: Strongly dipolar push-pull polymethine chromophores with huge dipole moments and excellent thermal stabilities exhibit suitable near-IR transparency and giant hyperpolarisability for applications in telecommunications (see figure).
Volume
21