Light initiated E–Z and Z–E isomerization of isatinphenylsemicarbazones: Tautomeric equilibrium effect
作者:Klaudia Jakusová、Marek Cigáň、Jana Donovalová、Martin Gáplovský、Robert Sokolík、Anton Gáplovský
DOI:10.1016/j.jphotochem.2014.05.004
日期:2014.8
different polarity. The reaction mechanism of photochemically and thermally initiated E–Z isomerization and the absence of back Z–E isomerization is discussed in terms of self-aggregate formation, hydrazide-hydrazonol tautomeric equilibrium, the role of intra- and inter-molecular hydrogen bonds, excited-state proton transfer, solvent polarity and concentration effects. The effect of the activation energies
在不同极性的溶剂中,研究了两种有效的靛红N-苯基半碳脲比色传感器的光和热引发的互为E-和Z-异构体的转变,这些传感器用于灵敏度,选择性和感测机理不同的强碱性阴离子。光化学和热引发的E - Z异构化和不存在反Z - E的反应机理根据自聚集体的形成,酰肼-肼酚互变异构平衡,分子内和分子间氢键的作用,激发态质子转移,溶剂极性和浓度效应等方面讨论了异构化。研究了与异构体的构象和几何变化有关的活化能的影响及其可能的分析应用。理论上计算的性质与获得的实验结果非常吻合,并支持所提出的反应机理。