The time-resolved thermal lensing (TRTL) technique was applied to determine the reaction heat of intramolecular hydrogen abstraction for excited 1,3-dimethylanthrone (DMAT). The excited carbonyl group abstracts the hydrogen atom of the neighboring methyl group to produce an intermediate. The intermediate decayed with 1.2±0.1 μs. The heat conversion efficiency was determined to be 1.02±0.02, revealing
应用时间分辨热透镜法(TRTL)确定激发的1,3-
二甲基蒽酮(
DMAT)的分子内氢提取的反应热。激发的羰基提取相邻甲基的氢原子以产生中间体。中间体以1.2±0.1μs衰减。测得的热转换效率为1.02±0.02,这表明受激
DMAT将所有能量散发为热量。TRTL信号的时间曲线导致中间体的反应热值为131±6 kJ / mol。我们简要讨论了该中间体的候选人。