Laser flash photolysis of solutions of naphthalene and 1,2-benzanthracene
Laser flash photolysis of solutions of naphthalene and 1,2-benzanthracene
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萘和1,2-苯并蒽溶液的激光闪光光解
DOI：
10.1021/j100705a008
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发表时间：
1970
期刊：
影响因子：
--
通讯作者：
J. K. Thomas
中科院分区：
文献类型：
--
作者：
R. Mcneil;J. Richards;J. K. Thomas
用四倍钕和双红宝石激光分别以2650毫微秒和3472毫微秒脉冲的光闪光分解了萘和1，2-苯并茂的溶液。用寿命和重原子的自旋-轨道耦合研究了激发单重态，观测到了短寿命的纳秒谱。还观察到了长寿命的微秒光谱，并将其归因于这些分子的三重态。单态的吸收光谱衰变，产生三重态的吸收光谱。激发的单重态和三重态光谱非常相似，这一细节与这些系统以前的脉冲辐解数据进行了讨论。
Solutions of naphthalene and 1, 2-benzanthracene have been flash photolyzed with nanosecond pulses of 2650-and 3472-A light from a quadrupled neodymium and doubled ruby laser, respectively. Short-lived nanosecond spectra are observed whichby lifetime and by heavy atom spin-orbit coupling studies are as-signed to excited singlet states. Long-lived microsecond spectra are also observed and are attributed to the triplet state of these molecules. The absorption spectra of the singlet statesdecay, giving rise to the absorp-tion spectra of the triplet state. The excited singlet and triplet spectra are quite similar, and this detail is discussed with regard to previous pulse-radiolysis data on these systems.