Asymmetric unit cell polymers with large first hyperpolarizabilities

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Large first hyperpolarizabilities (β) can result from the combination of donor and acceptor groups separated by a conjugated linker but also from the use of asymmetric unit cell polymers. Quantum chemistry methods including electron correlation effects are used to assess the chain length dependence of β of polymethineimine (PMI), a prototype of this kind of polymers. The evolution of β of PMI upon modification of the bond length alternation is investigated. It is demonstrated that PMI presents a very large β in comparison with usual push-pull molecules.

langue originaleAnglais
Pages (de - à)490-491
Nombre de pages2
journalSynthetic Metals
Numéro de publication1
Les DOIs
Etat de la publicationPublié - 1 mai 1999

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