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Issue 21, 2013
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Intrinsic fluorescence properties of rhodamine cations in gas-phase: triplet lifetimes and dispersed fluorescence spectra

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Abstract

We have investigated the gas phase triplet state lifetimes and dispersed fluorescence spectra of several types of rhodamine cations confined in a quadrupole ion trap and thermalized to 85 K. The measured triplet lifetimes of rhodamine cations Rh6G+, Rh575+, RhB+, and Rh101+ are found to be on the order of seconds, several orders of magnitude longer than those typically observed for the same dyes in optical condensed phase measurements. In addition dispersed fluorescence emission spectra in the gas phase at 85 K have been measured. The experimental gas phase results as well as solution measurements are compared to density functional calculations and the previous literature. Possible explanations for the discrepancy of gas and solution phase triplet lifetimes are discussed.

Graphical abstract: Intrinsic fluorescence properties of rhodamine cations in gas-phase: triplet lifetimes and dispersed fluorescence spectra

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Publication details

The article was received on 04 Dec 2012, accepted on 27 Mar 2013 and first published on 27 Mar 2013


Article type: Paper
DOI: 10.1039/C3CP44362K
Citation: Phys. Chem. Chem. Phys., 2013,15, 8162-8170
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    Intrinsic fluorescence properties of rhodamine cations in gas-phase: triplet lifetimes and dispersed fluorescence spectra

    J. Greisch, M. E. Harding, M. Kordel, W. Klopper, M. M. Kappes and D. Schooss, Phys. Chem. Chem. Phys., 2013, 15, 8162
    DOI: 10.1039/C3CP44362K

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