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##
描述了一类新的荧光有机化合物,具有多种用途。它们在
染料激光系统中作为
染料化合物特别有用,在使用光动力疗法技术治疗疾病组织时作为光
化学剂尤其有用。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 .dbd.R.sub.9 -R.sub.12 .dbd.C; R.sub.7 .dbd.B; R.sub.6 和 R.sub.8 .dbd.N; R.sub.14 .dbd较低的n-烷基或
氰根等电子吸引基团;R.sub.16 和 R.sub.19 独立地选自由较低的n-烷基、
硫酸酯或其酸或盐,或氢;而 R.sub.20 .dbd.R.sub.21 .dbd.F。其他化合物包括以下式的化合物##STR2##