Identification of dual conformers of Coumarin 153 under jet-cooled conditions
作者： Brian A Pryor , Phillip M Palmer , Yu Chen , Michael R Topp
DOI: 10.1016/S0009-2614(98)01310-4
关键词:
摘要: Abstract Coumarin 153, examined under supersonic jet conditions, is found to exist in two conformations. These have the same rotational coherence signals and fluorescence decay times, they show similar spectral shifts for different attachment sites presence of a single water molecule. However, their vibronic spectra low-frequency region are significantly different. Semi-empirical calculations (AM1) suggest structure assignments corresponding syn anti conformations saturated rings. Coumarin 337, which has ring structure, also reveals conformers having properties those Coumarin 153.
elsevier.com
sci-hub.se 参考文章(23)
Kim T-S, Choi Y S, Choo J, Laser-Induced Fluorescence Excitation Spectrum and $CF_3$ Torsional Potential Energy Function of 7-Amino-4-(trifluoromethyl)coumarin in Its $S_1$ Electrode Excited State Bulletin of The Korean Chemical Society. ,vol. 17, pp. 461- 463 ,(1996)
Mark Maroncelli, Graham R. Fleming, Picosecond solvation dynamics of coumarin 153: The importance of molecular aspects of solvation Journal of Chemical Physics. ,vol. 86, pp. 6221- 6239 ,(1987) , 10.1063/1.452460
Peter M. Andrews, Brian A. Pryor, Mitchell B. Berger, Phillip M. Palmer, Michael R. Topp, Rotational Coherence Measurements and Structure Calculations of Hydrogen-Bonded Complexes of Perylene with Water and Alcohols Journal of Physical Chemistry A. ,vol. 101, pp. 6222- 6232 ,(1997) , 10.1021/JP9716748
Niko P. Ernsting, Mustafo Asimov, Fritz P. Schäfer, The electronic origin of the ππ* absorption of amino coumarins studied in a supersonically cooled free jet Chemical Physics Letters. ,vol. 91, pp. 231- 235 ,(1982) , 10.1016/0009-2614(82)83647-6
Thomas Troxler, Philip G. Smith, John R. Stratton, Michael R. Topp, Structural measurements of hydrogen‐bonded van der Waals dimers and trimers by rotational coherence spectroscopy: 2,5‐diphenyloxadiazole with argon, methane, water, and alcohols Journal of Chemical Physics. ,vol. 100, pp. 797- 811 ,(1994) , 10.1063/1.466562
P. V. Kumar, M. Maroncelli, Polar solvation dynamics of polyatomic solutes: Simulation studies in acetonitrile and methanol Journal of Chemical Physics. ,vol. 103, pp. 3038- 3060 ,(1995) , 10.1063/1.470493
Guilford Jones II, Mohammad A Rahman, None, Fluorescence energy transfer between coumarin laser dyes co-bound to poly(methacrylic acid) in water Chemical Physics Letters. ,vol. 200, pp. 241- 250 ,(1992) , 10.1016/0009-2614(92)80005-V
J.E. Lewis, M. Maroncelli, On the (uninteresting) dependence of the absorption and emission transition moments of coumarin 153 on solvent Chemical Physics Letters. ,vol. 282, pp. 197- 203 ,(1998) , 10.1016/S0009-2614(97)01270-0
Guilford Jones, William R. Jackson, Chol Yoo Choi, William R. Bergmark, Solvent effects on emission yield and lifetime for coumarin laser dyes. Requirements for a rotatory decay mechanism The Journal of Physical Chemistry. ,vol. 89, pp. 294- 300 ,(1985) , 10.1021/J100248A024
Peter M. Felker, Rotational coherence spectroscopy: studies of the geometries of large gas-phase species by picosecond time-domain methods The Journal of Physical Chemistry. ,vol. 96, pp. 7844- 7857 ,(1992) , 10.1021/J100199A005