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Studies on two-photon absorption cross-sections of 1,4-dimethoxy-2,5-divinyl-benzene derivatives
KTH, School of Biotechnology (BIO), Theoretical Chemistry.ORCID iD: 0000-0003-0007-0394
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2005 (Chinese)In: Wuli xuebao, ISSN 1000-3290, Vol. 54, no 6, 2662-2668 p.Article in journal (Refereed) Published
Abstract [zh]

The one-photon and two-photon absorption properties of a series of 1, 4-dimethoxy-2, 5-divinyl-benzene derivatives are investigated by use of the analytic response theory at HF level. The one-photon and two-photon fluorescence spectra of E, E-2-5Bis[4'-(N, N-di-n-butylamino) styryl]-1 4-dimenthoxybenzene are measured. The numerical results show that these molecules have strong two-photon absorption cross sections. In the visible light region, the maximal one-photon absorption strengths of the molecules occur in the first excited state. Furthermore, the maximal two-photon absorption cross sections of the D-pi-A typed molecules still appear in the first state, but for D-pi-D typed molecules the second excited state has the maximal two-photon absorption cross-section. The optical properties of the molecules are closely related to the electric property of the donor and acceptor. The symmetrically substituted molecules can not be determined to have a larger two-photon absorption cross section than the asymmetrically substituted molecules for such a kind of pi-center. The charge-transfer process for the charge-transfer states is displayed, and then the mechanism of photopolymerization is discussed qualitatively.

Place, publisher, year, edition, pages
2005. Vol. 54, no 6, 2662-2668 p.
Keyword [zh]
two-photon absorption, response function approach, nonlinear optics, molecules, donor, chromophores, dependence, acceptor, state
Identifiers
URN: urn:nbn:se:kth:diva-14816ISI: 000229684700037Scopus ID: 2-s2.0-20444385139OAI: oai:DiVA.org:kth-14816DiVA: diva2:332857
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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