A time‐resolved EPR study of short‐lived triplet states: Host and temperature dependences of triplet properties of phthalazine
作者： Masahide Terazima , Seigo Yamauchi , Noboru Hirota
DOI: 10.1063/1.449182
关键词:
摘要: The triplet properties of phthalazine are investigated by means the time‐resolved EPR technique with laser excitation in various hosts over a wide range temperature. host and temperature dependences interpreted satisfactorily terms vibronic mixing between 3nπ* 3ππ* states. From parameters zfs pure state is deduced to be Xn =0.027 cm−1, Yn =−0.058 Zn =0.031 cm−1. fraction character T1 estimated ∼0% ethanol, benzoic acid (BAC), 1, 4‐dichlorobenzene (DCB), 14% 2, 4, 5‐tetrachlorobenzene (TCB), 60% biphenyl (BP), 84% durene. zfs, linewidth, phosphorescence spectrum, lifetime results explained using continuum model. simulation dependence DCB decay rate constant second excited (3nπ*) estim...
harvard.edu
scitation.org
aip.org
sci-hub.se 参考文章(16)
Himan Sternlicht, Spin—Spin Interactions in N‐Heterocyclic Molecules The Journal of Chemical Physics. ,vol. 38, pp. 2316- 2317 ,(1963) , 10.1063/1.1733979
Seigo Yamauchi, Tetsuo Ueno, Noboru Hirota, Optical and magnetic studies on the phosphorescent state of phthalazine in polar and non-polar hosts Molecular Physics. ,vol. 47, pp. 1333- 1348 ,(1982) , 10.1080/00268978200101012
Yue Chan, Marl Sharnoff, Ordering and anisotropy of the magnetic sublevels of the phosphorescent triplet of pyrimidine Journal of Luminescence. ,vol. 3, pp. 155- 174 ,(1970) , 10.1016/0022-2313(71)90054-8
H. Baba, I. Yamazaki, T. Takemura, Phosphorescence process in phthalazine Spectrochimica Acta Part A: Molecular Spectroscopy. ,vol. 27, pp. 1271- 1278 ,(1971) , 10.1016/0584-8539(71)80079-X
Beverly J. Cohen, Lionel Goodman, Radiationless Paths in the Diazines The Journal of Chemical Physics. ,vol. 46, pp. 713- 721 ,(1967) , 10.1063/1.1840731
Soon Sam Kim, S. I. Weissman, Transient magnetization following photoexcitation Reviews of Chemical Intermediates. ,vol. 3, pp. 107- 120 ,(1979) , 10.1007/BF03052283
W. A. Wassam, E. C. Lim, ’’Proximity effect’’ in radiationless transitions The Journal of Chemical Physics. ,vol. 68, pp. 433- 454 ,(1978) , 10.1063/1.435775
Yoshihiro Hirata, Noboru Hirota, Effects of deuteriation on ZFS and sublevel decay rates of 3ππ* benzaldehyde Molecular Physics. ,vol. 39, pp. 129- 141 ,(1980) , 10.1080/00268978000100111
Philémon Kottis, Roland Lefebvre, Calculation of the Electron Spin Resonance Line Shape of Randomly Oriented Molecules in a Triplet State. III. Spectra of Photoselected Molecules Journal of Chemical Physics. ,vol. 41, pp. 3660- 3661 ,(1964) , 10.1063/1.1725794
George L. Wheeler, Steven D. Colson, Intermolecular interactions in polymorphic p‐dichlorobenzene crystals: The α, β, and γ phases at 100 °K Journal of Chemical Physics. ,vol. 65, pp. 1227- 1235 ,(1976) , 10.1063/1.433231