Effects of Beta-Cyclodextrin on Selected Xanthene Dyes, Coumarins, and Pyrromethene-BF2 Complexes in Aqueous Solutions.

摘要

The effects of Beta-cyclodextrin were explored on the lasing, fluorescence and UV absorption of selected laser dyes in aqueous solution. Three xanthene dyes; rhodamine 6G, rhodamine B and the disodium salt of fluorescein were used with and without added Beta-cyclodextrin. Beta-Cyclodextrin enhances both fluorescence and lasing for all three dyes in concentrated dye solutions. In dilute solutions, Beta-cyclodextrin can induce either enhancement or quenching of fluorescence and absorption depending on the nature and concentration of dye. he fluorescence, absorption and lasing of the 1, 3, 5, 7, 8-pentamethylpyrromethene-BF2 complex and its 2,6-disulfonate disodium salt were examined in aqueous solutions for any effects from added Beta-cyclodextrin. No major, consistent effects were noted. (js)