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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, 14043-14050 p.Article 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, 14043-14050 p.
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: 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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