Development of Super Film-Photosensitizers (Chalcogenocarboxylic acid Derivatives) and their Evaluation Method

合成了一系列碱（RCEE'M， E， E'=O， S, Se, Te； M=Li, Na， K, Rb, Cs）和碱土金属盐[(RCEE')_2M， M=Ca, Sr， Ba]的硫代- (RCOSH)，硒代- (RCOSeH)，碲代- (RCOTeH)，双硫代- (RCSSH)和硒代- (RCSSeH)。研究了这些碱金属硫基羧酸盐(1)与各种13、14、15、16和17族卤化物的反应。此外，还研究了1与过渡金属卤化物的反应。这些反应很容易在0℃至室温下进行，得到相应的主族元素衍生物，收率很高。所得化合物均为新化合物。对170多种硫基羧酸衍生物进行了x射线结构分析。考察了这些硫基羧酸衍生物的薄膜光敏性。此外，这些化合物，特别是硒酸和碲羧酸衍生物被发现是非常有效的光敏剂。然而，后来的碲化合物对氧极不稳定，需要开发更稳定的对氧具有光敏剂活性的碲化合物。新的、简便的评价薄膜光敏性的方法正在研究中。

A series of alkali (RCEE'M, E, E'=O, S, Se, Te ; M=Li, Na, K, Rb, Cs] and alkali earth metal salts [(RCEE')_2M, M=Ca, Sr, Ba] of thio- (RCOSH), seleno- (RCOSeH), telluro- (RCOTeH), dithio- (RCSSH) and selenothio- (RCSSeH) were synthesized. The reactions of these alkali metal chalcogenocarboxylates (1) with a variety of Group 13, 14, 15, 16 and 17 elemet halides were inevestigated. In addition, the reaction of 1 with transition metal halides were investogated. These reactions readily proceed at 0℃ to room temperature to give the corresponding main group element derivarives in good yields. The obtained compounds all are new compounds. The X-ray structural analyses of over 170 chalcogenocarboxylic acid derivatives have beenrevealed.Film photo-sensitivity of these chalcogenocarboxylic acid derivatives was examined. Also, these compounds, particularlly selenno- and telluro-carboxylic acid derivatives were found to be very effective as photo-sensitizer. However, the later tellurium compounds are extremely labile toward oxygen and the development of more stable tellurium comounds toward oxygen which have activity as photo-sensitizer were desired.The development of new convenient method evaluating film-photosensitivity are in progress.