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Static and dynamic second hyperpolarizabilities of substituted push-pull polyenes

✍ Scribed by Yoichi Matsuzaki; Kazuyoshi Tanaka; Tokio Yamabe

Book ID: 103033844
Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 683 KB
Volume: 230
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(94)01170-2

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✦ Synopsis

Second hyperpolarizabilities ( y) of multiply substituted push-pull polyenes are estimated employing model systems described by the Pariser-Parr-Pople (PPP) Hamiltonian. For several push-pull polyenes, relative contributions from three types ofvirtual transition processes to static y values are examined in terms of transition properties associated with crucial excited states. In the case ofcentrosymmetrically substituted system, the excitation energies of certain one-and two-photon states can be controlled to realize the doubly resonant enhancement of u( --o; w, w, -w) by modifying the push-pull strength.

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