Venkatakrishnan P

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Venkatakrishnan P
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Venkatakrishnan P
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Parthasarathy, Venkatakrishnan
Venkatakrishnan, P.
Venkatakrishnan, Parthasarathy
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    Publication
    Combination of Cyanine Behaviour and Giant Hyperpolarisability in Novel Merocyanine Dyes: Beyond the Bond Length Alternation (BLA) Paradigm
    (01-09-2015)
    Venkatakrishnan P 
    ;
    Pandey, Ravindra
    ;
    Stolte, Matthias
    ;
    Ghosh, Sampa
    ;
    Castet, Frédéric
    ;
    Würthner, Frank
    ;
    Das, Puspendu Kumar
    ;
    Blanchard-Desce, Mireille
    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).