Delayed fluorescence and phosphorescence of 8-aza-D-homogonane in the gas and condensed phases
Delayed fluorescence and phosphorescence of 8-aza-D-homogonane in the gas and condensed phases
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DOI：
10.1007/s10895-006-0097-5
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发表时间：
2006-09-01
影响因子：
2.7
通讯作者：
Tolstorozhev, G. B.
中科院分区：
文献类型：
--
作者：
Borisevich, N. A.;Raichyonok, T. F.;Tolstorozhev, G. B.
8-叠氮- d -均形酮气相的延迟荧光光谱由m中心的e型延迟荧光带和l中心的p型延迟荧光带组成，它们是碱性甾体光转化和热转化的产物。建立了从m中心到l中心的三重态-三重态能量传递，并确定了其效率。在温度为77 K的冷冻正己烷溶液中，8-氮杂- d -均己烷只显示M中心和l中心的磷光。碱性类固醇本身的磷光(λ (phos)(max) = 415nm)以及M中心和l中心的磷光(λ （phos)（max）分别= 498和532 nm）在冷冻的四氢呋喃和甲苯溶液的混合物中可见。这是一个明显的事实，即碱性类固醇具有其转化的产物，其数量因辐照和加热而增加。M中心和l中心是稳定的分子。
The delayed fluorescence spectrum for 8-aza-D-homogonane in the gas phase consists of a band of E-type delayed fluorescence of M-centers and a band of P-type delayed fluorescence of L-centers being the products of photo- and thermotransformations of a basic steroid. Triplet-triplet energy transfer from the M-centers to the L-centers is established and its efficiency is determined. For 8-aza-D-homogonane in frozen hexane solutions at T=77 K only the phosphorescence of the M- and L-centers is revealed. The phosphorescence of the basic steroid itself (lambda(phos)(max) = 415nm) as well as that of the M- and L-centers (lambda(phos)(max) = 498 and 532 nm, respectively) is seen in a mixture of frozen tetrahydrofuran and toluene solutions. This is evident of the fact that the basic steroid has the products of its transformations, whose amount grows due to irradiation and heating. The M- and L-centers are stable molecules.