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Acid-switching of the Triplet Excited State of Rhodamine/Iodo-sryryl-BODIPY Dyad Based on the FRET Effect
XU Kejing,ZHAO Jianzhang *
State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024
*Correspondence author
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Funding: none
Opened online:28 July 2015
Accepted by: none
Citation: XU Kejing,ZHAO Jianzhang.Acid-switching of the Triplet Excited State of Rhodamine/Iodo-sryryl-BODIPY Dyad Based on the FRET Effect[OL]. [28 July 2015] http://en.paper.edu.cn/en_releasepaper/content/4650729
 
 
A acid-controlable triplet photosensetizer (BR-1) enhanced with the fluorescence resonance energy transfer (FRET) effect was prepared. Rhodamine was used as an intramolecular energy donor as well as acid-controlable unit, and iodo-styryl-Bodipy was used as an intramolecular energy acceptor/spin converter. The intramolecular energy transfer from open-formed Rhodamine unit to iodo-styryl-Bodipy unit was studied upon the addition of acid (trifluoroacetic acid, TFA) at different time. The fluorescence quenching and excitation spectra indicated that the FRET efficiency is significantly enhanced from 0.0% to 56.1%. Our results are useful to design the triplet photosensitizers with controlable triplet state property .
Keywords:Applied chemistry; FRET; Triplet state; Photosensitizer; Bodipy; Rhodamine
 
 
 

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