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| Type |
Poster Presentation |
| Area |
Inorganic Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 18일 (목요일) 11:00~12:30 |
| Code |
INOR.P-11 |
| Subject |
Time-Resolved Turn-on Fluorescence Sensing of Hydrogen Peroxide by Ortho-Carbazole-Appended Triarylboron Compounds |
| Authors |
Young Hoon Lee, Heechai Lee, Juhee Kim, Min Hyung Lee*
Department of Chemistry, University of Ulsan, Korea
|
| Abstract |
We report novel "turn-on" fluorescent probes containing a carbazoyl donor-triarylboryl acceptor luminophore and dialkyl phosphine (R = Ph, i-Pr) as a binding site, which can efficently monitor hydgrogen peroxide (H2O2) in ethanolic solution. Upon addition of H2O2, weakly emissive phosphine compounds are changed to their phosphine oxides that can strongly exhibit green thermally activated delayed fluorescence (TADF) with microsecond-range lifetime. By using time-resolved emission techniques, the interference of the short-lived fluorescence noise can be effectively eliminated and the signal-to-noise ratio of the detecting emission can be significantly improved. Finally, the selectivity of the probes toward H2O2 over other analytes (e.g., various anions, biologically relevant species, and various metal ions) were also examined in EtOH at room temperature, showing high selectivity for H2O2. |
| E-mail |
dasis75@hanmail.net |
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123rd General Meeting of the KCS