TY - JOUR
T1 - Femtosecond fluorescence upconversion studies of excited-state proton-transfer dynamics in 2-(2′-hydroxyphenyl)benzoxazole (HBO) in liquid solution and DNA
AU - Wang, H.
AU - Zhang, H.
AU - Abou-Zied, O. K.
AU - Yu, C.
AU - Romesberg, F. E.
AU - Glasbeek, M.
N1 - Funding Information:
This research was financially supported in part by the Council for Chemical Sciences of the Netherlands Organization for Scientific Research (CW-NWO).
PY - 2003/1/10
Y1 - 2003/1/10
N2 - A femtosecond fluorescence upconversion study is reported for HBO in solution, as well as for HBO incorporated in DNA. The typical time for the excited-state intramolecular proton-transfer reaction of the syn-enol tautomer in solution and in DNA has been determined to be 150 fs. In addition, the lifetimes of the keto, the anti-enol and the 'solvated enol' tautomer forms were determined in protic solvents, aprotic solvents and DNA. Picosecond rise and decay components in the fluorescence transients with characteristic times between 3 and 25 ps are also observed and attributed to the effects of vibrational cooling.
AB - A femtosecond fluorescence upconversion study is reported for HBO in solution, as well as for HBO incorporated in DNA. The typical time for the excited-state intramolecular proton-transfer reaction of the syn-enol tautomer in solution and in DNA has been determined to be 150 fs. In addition, the lifetimes of the keto, the anti-enol and the 'solvated enol' tautomer forms were determined in protic solvents, aprotic solvents and DNA. Picosecond rise and decay components in the fluorescence transients with characteristic times between 3 and 25 ps are also observed and attributed to the effects of vibrational cooling.
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U2 - 10.1016/S0009-2614(02)01741-4
DO - 10.1016/S0009-2614(02)01741-4
M3 - Article
AN - SCOPUS:0037427655
SN - 0009-2614
VL - 367
SP - 599
EP - 608
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 5-6
ER -