The rotational state dependence of the dynamics of pyrimidine in the S1 (1B1) state studied by time resolved spectroscopy
作者： Robert T. Carter , H. Bitto , J. Robert Huber
DOI: 10.1063/1.469323
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摘要: The dynamics of pyrimidine in three vibronic levels the S1 (1B1) state with excess energies 1100–1300 cm−1 above 00 level has been studied by time resolved spectroscopy. fluorescence decays from 40 to 50 single rovibronic each band were measured and found be biexponential due coupling background triplet states. Analysis yielded amplitude ratio fast (coherent) slow (incoherent) component intensity, A+/A−, lifetime component, being τ ≊700–900 ns. Both data show a clear dependence on rotational quantum number J. A+/A− ratio, which reflects coupled states, takes form linear (2J+1) implying full mixing 3B1 state. More states than could accounted for calculated density, suggesting further mixing, possible mechanisms are discussed. res...
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P.R. Willmott, H. Bitto, J. Robert Huber, J mixing in propynal studied by sub-natural linewidth resolution quantum beat spectroscopy Chemical Physics Letters. ,vol. 188, pp. 369- 375 ,(1992) , 10.1016/0009-2614(92)80832-V
J. Mühlbach, J. Robert Huber, Intramolecular dephasing and relaxation in the molecule butynal (CH3–C≡CCHO) Journal of Chemical Physics. ,vol. 85, pp. 4411- 4421 ,(1986) , 10.1063/1.451786
David M. Bartels, Kenneth G. Spears, Rotational effects in the intermediate-case radiationless decay of pyrimidine The Journal of Physical Chemistry. ,vol. 14, pp. 5180- 5191 ,(1982) , 10.1021/J100223A025
Michael H. Palmer, Isobel C. Walker, Martyn F. Guest, Andrew Hopkirk, The electronic states of the azines. II. Pyridine, studied by VUV absorption, near-threshold electron energy loss spectroscopy and ab initio multi-reference configuration interaction calculations principles and practice of constraint programming. ,vol. 141, pp. 187- 200 ,(1990) , 10.1016/0301-0104(90)85017-Q
C. A. Rogaski, A. M. Wodtke, Molecular beam stimulated emission pumping spectroscopy of propynal Journal of Chemical Physics. ,vol. 100, pp. 78- 87 ,(1994) , 10.1063/1.466897
Charles G. Stevens, John C. D. Brand, Angular momentum dependence of first‐ and second‐order singlet‐triplet interactions in polyatomic molecules The Journal of Chemical Physics. ,vol. 58, pp. 3324- 3330 ,(1973) , 10.1063/1.1679659
F. Lahmani, A. Tramer, C. Tric, Nonexponential decays in single vibronic level fluorescence: A comparison between kinetics and quantum mechanical treatment Journal of Chemical Physics. ,vol. 60, pp. 4431- 4447 ,(1974) , 10.1063/1.1680921
Richard E. Smalley, Lennard Wharton, Donald H. Levy, Dean W. Chandler, The fluorescence excitation spectrum of s-tetrazine cooled in a supersonic free jet Journal of Molecular Spectroscopy. ,vol. 66, pp. 375- 388 ,(1977) , 10.1016/0022-2852(77)90296-X
S. Derler, H. Bitto, J.R. Huber, Statistical effects on the dynamics of a multilevel system studied in S1-butynal Chemical Physics. ,vol. 169, pp. 275- 289 ,(1993) , 10.1016/0301-0104(93)80084-M
Ch. Ottinger, A.F. Vilesov, T. Winkler, Laser-induced phosphorescence of jet-cooled pyrimidine Chemical Physics Letters. ,vol. 208, pp. 299- 306 ,(1993) , 10.1016/0009-2614(93)89079-W