Fluorescence resonance energy transfer of gas-phase ions under ultra high vacuum and ambient conditions

Literature Information

Publication Date 2014-03-14
DOI 10.1039/C3CP54521K
Impact Factor 3.676
Authors

Vladimir Frankevich, Vitaliy Chagovets, Fanny Widjaja, Konstantin Barylyuk, Zhiyi Yang, Renato Zenobi


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Abstract

We report evidence for fluorescence resonance energy transfer (FRET) of gas-phase ions under ultra high vacuum conditions (10−9 mbar) inside a mass spectrometer as well as under ambient conditions inside an electrospray plume. Two different FRET pairs based on carboxyrhodamine 6G (donor) and ATTO590 or Bodipy TR (acceptor) dyes were examined and their gas-phase optical properties were studied. Our measurements indicate a different behavior for the two FRET pairs, which can be attributed to their different conformations in the gas phase. Upon desolvation via electrospray ionization, one of the FRET pairs undergoes a conformational change that leads to disappearance of FRET. This study shows the promise of FRET to obtain a direct correlation between solution and gas-phase structures.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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