TY - JOUR
T1 - Excited-State Intramolecular Proton Transfer of the Natural Product Quercetin
AU - Simkovitch, Ron
AU - Huppert, Dan
N1 - Publisher Copyright:
© 2015 American Chemical Society.
PY - 2015/8/13
Y1 - 2015/8/13
N2 - Intramolecular proton-transfer dynamics in the lowest excited state (ESIHT) were studied in the natural product quercetin. We found that in all seven solvents used in this study, the ESIHT rate is ultrafast. We estimate that the ESIHT rate is about 70 fs or less. We found that in deuterated protic solvents, such as methanol-d or ethanol-d, the ESIHT rate is slower and the proton-transfer time constant is about 110 fs. The tautomeric form fluorescence quantum yield of quercetin is very low, of the order of the normal form.
AB - Intramolecular proton-transfer dynamics in the lowest excited state (ESIHT) were studied in the natural product quercetin. We found that in all seven solvents used in this study, the ESIHT rate is ultrafast. We estimate that the ESIHT rate is about 70 fs or less. We found that in deuterated protic solvents, such as methanol-d or ethanol-d, the ESIHT rate is slower and the proton-transfer time constant is about 110 fs. The tautomeric form fluorescence quantum yield of quercetin is very low, of the order of the normal form.
UR - http://www.scopus.com/inward/record.url?scp=84939229132&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcb.5b04867
DO - 10.1021/acs.jpcb.5b04867
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:84939229132
SN - 1520-6106
VL - 119
SP - 10244
EP - 10251
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
IS - 32
ER -