New Development in Photochemistry of Molecules and Molecular Systems

在有机分子的有机光化学和物理光化学领域，有机化学家和物理化学家之间的合作研究得到了广泛的参与，并进行了以下研究，并提供了有趣的结果;酮阳离子自由基C-C键断裂速率常数的首次测定，光诱导CR科普重排机理的测定，各种新型和实用的光致变色分子的合成，光化学和电子电离下产生的离子自由基之间的反应性差异，新型TMM物种的光化学产生，荧光猝灭机制中的TMM-Weller关系的新方面，偶氮化合物的新型电子转移反应，来自光激发环酮的三重态双自由基的动态研究，通过三重态激基复合物和三重态激基复合物的结构确定H-原子转移机制，离子对和由光诱导电子转移产生的自由离子自由基之间的反应性差异，以及一种新的内过氧化物的光诱导电子转移逆Diels-桤木反应。在无机和有机金属化合物的光化学方面，开展了四苯基卟啉锑与水的光催化氧化烯烃、不稳定有机金属中间体的时间分辨红外光谱和穆斯堡尔谱、金属分子簇的合成和反应性、肽卟啉的光化学以及各种光功能化材料的光化学性质的研究。研究了新型光芬顿试剂在生物有机光化学中对DNA的选择性切割。在分子体系光化学方面，研究了Cu^+/沸石催化NO_X的光分解、卟啉聚合物在光子学中的应用、双色增感光化学烧孔、芳烃LB膜中有机分子的反应性

In the fields of prganic and physical photochemistry of prganic molecues, cooperative researches between organic and physical chemists were extensively involved and following studies were performed and provided interesting results ; the first determination of rate constants for the C-C bond cleavage of ketone cation radicals, determination of the photoinduced CR Cope rearrangement mechanism, syntheses of various novel and practically useful photochromic molecules, difference in reactivities between ion radicals generated photochemically and under electron ionization, the photochemical generation of a novel TMM species, a new aspect of the Rehm-Weller relationship in a fluorescene quenching mechanism, novel electron-transfer reactions of azo compounds, dynamic studies on triplet biradicals from photoexcited cyclic ketones, determinations of the H-atom transfer mechanism via triplet exciplexes and the structure of triplet exciplexes, differences in reactivities between ion pairs and free ion radicals generated by photoinduced electron-transfer, and a novel photoinduced electron-transfer retro-Diels-Alder reactions of endoperoxides. In the field of photochemistry of inorganic and organometallic compounds, studies on photo-expoxidation of olefins using tetraphenylporphyrinatoantimony with water, time-resolved infrared and mossbauer spectroscopy of unstable organometallic intermediates, synthese and reactivities of matal-molecule clusters, photo-chemistry of peptide-porphyrin and photochemical properties of various photo-functionalized materials, were performed. The selective DNA cleavage using novel Photo-Fenton's regents was studied in bioorganic photo-chemistry. In the field of photochemistry of molecular systems, photodecomposition of NO_X by Cu^+/zeolite, application of porphyrin-polymer to photonics, a novel photochemical holeburning by two-color sensitization, reativities of organic molecules incorporated in LB layr composed of aromatic hydrocarbons