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PubMed · 16201792

Two-photon absorption in aqueous micellar solutions.

Han Young Woo·Dmitry Korystov·Alexander Mikhailovsky·Thuc-Quyen Nguyen·Guillermo C Bazan
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Abstract

Addition of the surfactant sodium dodecyl sulfate at concentrations above the critical micelle concentration increases the fluorescence quantum yield and the two-photon absorption cross-section of charged [2.2]paracyclophane chromophores containing pairs of D-pi-D chromophores. The resulting spectra in the micellar solutions are very similar to those obtained for neutral isostructural analogues in toluene. The measured etadelta values are 1300 GM for 1C and 1920 GM for 2C, which are comparable or larger to those in toluene. These results highlight possible misleading interpretation of two-photon-induced emission for evaluating the concentration of labeled substrates used in two-photon microscopy and provide guidelines for designing molecular structures with optimized two-photon action cross-sections in water.

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AcetatesMicellesMicroscopy, Fluorescence, MultiphotonMolecular StructurePhotochemistryPolycyclic CompoundsSodium Dodecyl SulfateSolutionsWaterJournal ArticleResearch Support, N.I.H., ExtramuralResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, Non-P.H.S.Research Support, U.S. Gov't, P.H.S.

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Han Young Woo, Dmitry Korystov, Alexander Mikhailovsky, Thuc-Quyen Nguyen, Guillermo C Bazan. 2005-10-12. Two-photon absorption in aqueous micellar solutions.. https://doi.org/10.1021/ja054911q

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