Effects of photophysical properties of 1,4-cyclohexadiene derivatives on their [2 + 2] photocycloaddition reactivities: Experimental and theoretical studies
作者:Xiaokun Zhang、Jingrui Cui、Hong Yan
DOI:10.1016/j.jphotochem.2021.113336
日期:2021.7
To study the relationship between the [2 + 2] photocycloaddition reactivities of 1,4-cyclohexadiene derivatives (1,4−CHDs) and their structures, photophysical properties of a series of 1,4−CHDs were studied experimentally and by performing theoretical calculations. Specifically, UV–vis absorption spectra of these compounds in diluted solutions were acquired and the theoretical calculations were performed
为了研究1,4-环己二烯衍生物(1,4-CHD)的[2 + 2]光环加成反应活性与其结构之间的关系,通过实验和理论计算对一系列1,4-CHD的光物理性质进行了研究。 。具体而言,获得了这些化合物在稀释溶液中的紫外可见吸收光谱,并在密度泛函理论(DFT)级别上进行了理论计算。发现它们的最大紫外可见吸收率与1,4-环己二烯环上的取代基有关。为了描述1,4-CHD的[2 + 2]光环加成反应性,使用时变密度泛函理论(TDDFT)优化了它们的基态和激发态结构,并在M062X上计算了它们的电子激发能/ def-TZVP级别。前沿分子轨道和电子-空穴分布分析被用来说明1,4-CHDs的电子跃迁模式。通过进行均方根偏差(RMSD)分析来表征不同1,4-CHD的基态和激发态结构之间的差异。结果表明,1,4-CHDs的光物理性质对于解释其[2 + 2]光环加成反应性具有重要意义。