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Solvent effects on the electronic structure of a newly synthesized two-photon polymerization initiator
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2003 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 119, no 2, 1208-1213 p.Article in journal (Refereed) Published
Abstract [en]

Time-dependent hybrid density functional theory in combination with polarized continuum model has been applied to study the solvent effects on the geometrical and electronic structures, as well as one- and two-photon absorption processes, of a newly synthesized asymmetrical charge-transfer (CT) two-photon absorption (TPA) organic molecule. The TPA cross section calculated from a generalized two-state model and solvatochromic shift of the CT state are found to be solvent dependent, for which a nonmonotonic behavior with respect to the polarity of the solvents has been observed. The calculated properties are in good agreement with the experimental data available. The character of the CT state is visualized by plotting its charge density difference from ground state, in which an excess of electron density on the donor side of the molecule is found. This implies that the excited molecule is ready to donate its electron to the surroundings. The energetic aspect of the electron donation is discussed by examining the solvent dependence of the molecular ground state oxidation potential. The importance of the electron correlation for describing the two-photon absorption is also demonstrated.

Place, publisher, year, edition, pages
2003. Vol. 119, no 2, 1208-1213 p.
Keyword [en]
absorption cross-sections, polarizabilities alpha, molecules, design, gamma, dyes, beta
Identifiers
URN: urn:nbn:se:kth:diva-22628DOI: 10.1063/1.1579680ISI: 000183842500062OAI: oai:DiVA.org:kth-22628DiVA: diva2:341326
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Luo, Yi

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