This research is dedicated to the study of bis(ammoniopropyl) derivative of (E)-4-(4-mercaptostyryl)pyridine dye (2), forming a highly stable bimolecular complex with a bis(18-crown-6 ether) derivative of (E)-stilbene (1) in solution owing to ditopic coordination via hydrogen bonds. The spectral-kinetic parameters of E isomer of the dye and its complex were obtained using steady-state absorption, fluorescence, and time-resolved absorption spectroscopy. The stability constant of the complex, quantum yields of cross-PCA and retro-PCA reactions were determined by spectrophotometric titration methods. According to density functional theory calculations, E–Z photoisomerization of dye 2 occurs via non-radiative deactivation from intermediate twisted (TICT) state. The detailed study of stereospecific [2 + 2]-cross-photocycloaddition (cross-PCA) of complex (E)-1·(E)-2 and back reaction of cross-PCA product (rctt-3) was carried out. The complexation reaction of cyclobutane rctt-3 with Ba²⁺ ions has been investigated. A highly efficient direct intrasupramolecular photoelectron transfer and the back electron transfer of a moderate efficiency were found for the complex (E)-1·(E)-2.

这项研究致力于研究（E）-4-（4-巯基苯乙烯基）吡啶染料（2）的双（氨丙基）衍生物，与双（18-冠-6醚）衍生物形成高度稳定的双分子复合物。 （E）-sti（1）在溶液中由于通过氢键的对位配位。使用稳态吸收，荧光和时间分辨吸收光谱法获得了染料及其配合物的E异构体的光谱动力学参数。通过分光光度滴定法确定了配合物的稳定常数，交叉PCA和逆PCA反应的量子产率。根据密度泛函理论计算，染料的E–Z光异构化图2所示的过程是通过从中间扭曲（TICT）状态进行的非辐射失活而发生的。对配合物（E）-1 ·（E）-2的立体特异性[2 + 2]-跨光环加成（cross-PCA）以及交叉PCA产物（rctt - 3）的后反应进行了详细研究。研究了环丁烷rctt - 3与Ba ²⁺离子的络合反应。发现配合物（E）-1 ·（E）-2的高效直接超分子内光电子转移和中等效率的反电子转移。