title: Combination of Cyanine Behaviour and Giant Hyperpolarisability in Novel Merocyanine Dyes: Beyond the Bond Length Alternation (BLA) Paradigm.
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.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Madras, Chennai - 600 036 (India).
authors.forename: Venkatakrishnan
authors.initials: V
authors.lastname: Parthasarathy
authors.affiliation: Department of Inorganic and Physical Chemistry, Indian Institute of Science (IISc), Bangalore, 560012 (India).
authors.forename: Ravindra
authors.initials: R
authors.lastname: Pandey
authors.affiliation: Universität Würzburg, Institut für Organische Chemie and Center for Nanosystems Chemistry, Am Hubland, 97074 Würzburg (Germany).
authors.forename: Matthias
authors.initials: M
authors.lastname: Stolte
authors.affiliation: Department of Inorganic and Physical Chemistry, Indian Institute of Science (IISc), Bangalore, 560012 (India).
authors.forename: Sampa
authors.initials: S
authors.lastname: Ghosh
authors.affiliation: Univ. Bordeaux, Institut des Sciences Moléculaires (UMR 5255 CNRS), 33405 Talence (France).
authors.forename: Frédéric
authors.initials: F
authors.lastname: Castet
authors.affiliation: Universität Würzburg, Institut für Organische Chemie and Center for Nanosystems Chemistry, Am Hubland, 97074 Würzburg (Germany). wuerthner@chemie.uni-wuerzburg.de.
authors.forename: Frank
authors.initials: F
authors.lastname: Würthner
authors.affiliation: Department of Inorganic and Physical Chemistry, Indian Institute of Science (IISc), Bangalore, 560012 (India). pkdas@ipc.iisc.ernet.in.
authors.forename: Puspendu Kumar
authors.initials: PK
authors.lastname: Das
authors.affiliation: Univ. Bordeaux, Institut des Sciences Moléculaires (UMR 5255 CNRS), 33405 Talence (France). mireille.blanchard-desce@u-bordeaux.fr.
authors.forename: Mireille
authors.initials: M
authors.lastname: Blanchard-Desce
keywords: conjugation; cyanines; donor-acceptor systems; hyperpolarizability; nonlinear optics