A new group of fluorescent organic compounds having a variety of uses are described. They are especially useful as dye compounds in dye laser systems, and as photochemical agents in the treatment of diseased tissues using photodynamic therapy techniques. The compounds include a tri-cyclic compound having the following structure: ##STR1## Preferably R.sub.1 -R.sub.5 .dbd.R.sub.9 -R.sub.12 .dbd.C; R.sub.7 .dbd.B; R.sub.6 and R.sub.8 .dbd.N; R.sub.14 .dbd.lower n-alkyl or an electron withdrawing group such as CN.sup.- ; R.sub.16 and R.sub.19 are independently selected from the group consisting of lower n-alkyl, a sulfate or an acid or salt thereof, or hydrogen; and R.sub.20 .dbd.R.sub.21 .dbd.F. Other compounds include compounds of the formula ##STR2##
描述了一组新的荧光有机化合物,具有各种用途。它们在
染料激光系统中作为
染料化合物特别有用,并且在使用光动力疗法技术治疗疾病组织时作为光
化学试剂。这些化合物包括具有以下结构的
三环化合物:##STR1## 优选R.sub.1-R.sub.5 = R.sub.9-R.sub.12 = C; R.sub.7 = B; R.sub.6和R.sub.8 = N; R.sub.14 = 较低的n-烷基或电子提取基,例如CN.sup.-;R.sub.16和R.sub.19分别选自较低的n-烷基,
硫酸盐或其酸或盐,或氢的群;以及R.sub.20 = R.sub.21 = F。其他化合物包括以下公式的化合物:##STR2##