Synthesis and Study of ESIPT And ESDPT Compound
Date Issued
2011
Date
2011
Author(s)
Chen, Chyi-Lin
Abstract
The dual function of the excited-state intramolecular proton transfer (ESIPT) in the newly synthesized 3-hydroxy-2-(pyridin-2-yl)-4H-chromen-4-one has been recognized. One of the two ESIPT routes typically happens between the hydroxyl group and the carbonyl group in a five-membered ring configuration. The other occurs between the hydroxyl group and the pyridinic group in a six-membered ring configuration. The switchable ESIPT implies the potential applications of the pH fluorescent indicator and the anion chemosensor. The dual function in the 3-hydroxyflavone derivative is believed to further spark large interests for the utilization of the ESIPT in a more practical way.
On the other hand, the ESPT dyanmcis via intermolecular hydrogen bonding has also been reviewed. Particually, a four 6HIQ is strategically designed and synthesized; it possesses a central moiety of 7-azaindole (7AI) and undergoes excited-state double proton transfer (ESDPT). Despite a barrierless type of ESDPT in the 6HIQ dimer, femtosecond dynamics and a kinetic isotope effect provide indications for a stepwise ESDPT process in the 6HIQ/7AI heterodimer.
Subjects
ESIPT
ESDPT
excited-state intramolecular proton transfer
3-hydroxyflavone
Type
thesis
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