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Studies on two-phot...
Studies on two-photon absorption cross-sections of 1,4-dimethoxy-2,5-divinyl-benzene derivatives
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Zhao, K. (author)
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Sun, Y. H. (author)
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Wang, C. K. (author)
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- Luo, Yi (author)
- KTH,Teoretisk kemi
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Zhang, X. (author)
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Yu, X. Q. (author)
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Jiang, M. H. (author)
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(creator_code:org_t)
- Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences, 2005
- 2005
- Chinese.
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In: Wuli xuebao. - : Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences. - 1000-3290. ; 54:6, s. 2662-2668
- Related links:
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https://doi.org/10.7...
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https://urn.kb.se/re...
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https://doi.org/10.7...
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Abstract
Subject headings
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- 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.
Keyword
- two-photon absorption
- response function approach
- nonlinear optics
- molecules
- donor
- chromophores
- dependence
- acceptor
- state
Publication and Content Type
- ref (subject category)
- art (subject category)
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