Saturation of the hyperpolarizability of oligothiophenes

H. Thienpont, G.L.J.A. Rikken, E.W. Meijer, W. Hoeve, ten, H. Wynberg

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    The observation is reported of satn. with chain length of the 2nd hyperpolarizability of a series of long defined conjugated oligothiophenes. This satn. occurs at the same length as that of the band gap and of the polarizability, and is attributed to a satn. of the effective conjugation length. Solvatochromic and thermochromic measurements indicate that conformational effects play a role. [on SciFinder (R)]
    Original languageEnglish
    Pages (from-to)2141-2144
    Number of pages4
    JournalPhysical Review Letters
    Issue number17
    Publication statusPublished - 1990


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