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Predictions of novel two-photon absorption bands in fluorescent proteins
KTH, School of Biotechnology (BIO), Theoretical Chemistry.ORCID iD: 0000-0003-0007-0394
2007 (English)In: Journal of Physical Chemistry B, ISSN 1520-6106, E-ISSN 1520-5207, Vol. 111, no 50, p. 14043-14050Article in journal (Refereed) Published
Abstract [en]

By means of time-dependent density functional theory, we calculate the two-photon cross-sections for the lowest relevant excitations in some model chromophores of intrinsically fluorescent proteins. The two-photon strength of the first, one-photon active transition varies among the various chromophores, in line with experimental findings. Interestingly, additional transitions with large two-photon cross-sections are found in the 500-700 nm region arising from near-resonant enhancement, as revealed by few-state model analysis. Multiphoton excitation of fluorescent proteins in this spectral region can lead to relevant application for bioimaging.

Place, publisher, year, edition, pages
2007. Vol. 111, no 50, p. 14043-14050
Keyword [en]
density-functional theory, excited-state dynamics, crystal-structure, proton-transfer, cross-sections, monomeric red, chromophore, asfp595, excitation, resolution
Identifiers
URN: urn:nbn:se:kth:diva-17158DOI: 10.1021/jp075545vISI: 000251615400027Scopus ID: 2-s2.0-38149038556OAI: oai:DiVA.org:kth-17158DiVA, id: diva2:335201
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Luo, Yi

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