若干全极性三核菁染料超增感机理的研究

STUDY ON MECHANISM OF SUPERSENSITIZATION OF SOME HOLOPOLAR TRINUCLEAR CYANINE DYES

若干全极性三核菁染料超增感机理的研究张金龙，朱正华，陈廉生（华东理工大学精细化工研究所上海２００２３７）关键词染料正穴，电子顺磁共振，超增感超增感组合是提高增感效率的重要手段，在影像科学和技术领域中占有十分重要的地位，本文新研究的是以全极性（Ｈｏｌｏ...

In this paper, examinations have been made into the supersensitization ofnaphothiacarboncyanine (NTCC) by some holopolar trinclear cyanine dyes. It is found that someholopolar trinuclear cyanine dyes containing acidic nucleus can supersensitizeNICC very well. By use of technique of ERS, it is concluded that holopolar trinuclear cyanine dyeswhich have ESR signals can supersensitize NTCC very well and there is correlation between increaseof the values of sensitivity and increase of the concentrations of postive hole. It is also found ΔHppof ESR signals of NTCC is reduced by holopolar trinuclcar cyanine dye. These results Support Dr.Gilman's general conclusion that a positive hole produced by sensitizer was trapped day supersensitiz-er. if a suitable supersensitizer molecule was present around sensitizer molecules.