A molecular theory for two-photon and three-photon fluorescence polarization

Leeder, J.M. and Andrews, D.L. (2011) A molecular theory for two-photon and three-photon fluorescence polarization. The Journal of Chemical Physics, 134 (9). 094503. ISSN 1089-7690

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Abstract

In the analysis of molecular structure and local order in heterogeneous samples, multiphoton excitation of fluorescence affords chemically specific information and high-resolution imaging. This report presents the results of an investigation that secures a detailed theoretical representation of the fluorescence polarization produced by one-, two-, and three-photon excitations, with orientational averaging procedures being deployed to deliver the fully disordered limits. The equations determining multiphoton fluorescence response prove to be expressible in a relatively simple, generic form, and graphs exhibit the functional form of the multiphoton fluorescence polarization. Amongst other features, the results lead to the identification of a condition under which the fluorescence produced through the concerted absorption of any number of photons becomes completely unpolarized. It is also shown that the angular variation of fluorescence intensities is reliable indicator of orientational disorder.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
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Depositing User: Users 2731 not found.
Date Deposited: 23 Aug 2011 11:07
Last Modified: 17 Sep 2020 23:29
URI: https://ueaeprints.uea.ac.uk/id/eprint/34579
DOI: 10.1063/1.3556537

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