Effect of β-cyclodextrin on the fluorescence, absorption and lasing of rhodamine 6G, rhodamine B and fluorescein disodium salt in aqueous solutions

Autor:	Ieva R. Politzer, Mayur Shah, Kathleen T. Crago, Jocelyn Joseph, Joseph H. Boyer, Tony Hampton
Rok vydání:	1989
Předmět:	Xanthene Rhodamine 6G chemistry.chemical_compound Quenching (fluorescence) Aqueous solution Absorption spectroscopy Chemistry Rhodamine B General Physics and Astronomy Physical and Theoretical Chemistry Absorption (chemistry) Photochemistry Fluorescence
Zdroj:	Chemical Physics Letters. 159:258-262
ISSN:	0009-2614
DOI:	10.1016/0009-2614(89)87420-2
Popis:	The fluorescence, absorption and lasing of three xanthene dyes, rhodamine 6G, rhodamine B and the disodium salt of fluorescein were examined in aqueous solutions with and without added β-cyclodextrin. β-cyclodextrin enhances both fluorescence and lasing for all three dyes in concentrated (10−3 M) aqueous dye solutions. In dilute (10−5 to 10−8 M) aqueous dye solutions, β-cyclodextrin can induce either enhancement or quenching of fluorescence and absorption depending on the nature and concentration of the dye. Deaggregation in concentrated solutions and variable complex formation in dilute solutions are proposed to account for the β-cyclodextrin-induced effects.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::81aae10c441ea4728a8acd84b6996084 https://doi.org/10.1016/0009-2614(89)87420-2 Zobrazit plný text záznamu