Spectrofluorometric study of complexation of some amino derivatives of 9,10-anthraquinone with beta-cyclodextrin.
Complexation reactions between 1-amino-9,10-anthraquinone (AA1), 1-amino-2-methyl-9,10-anthraquinone (AA2), 1-amino-2,4-dimethyl-9,10-anthraquinone (AA3) and 1-amino-2-ethyl-9,10-anthraquinone (AA4) and beta-cyclodextrin were studied spectrofluorometrically, under optimized experimental conditions. The formation constants of the resulting 1:1 beta-cyclodextrin complexes were evaluated and found to decrease in the order AA4>AA1>AA3>AA2. Possible reasons for the observed stability sequence are discussed based on the structures proposed for the resulting inclusion complexes.
Shamsipur
Mojtaba
M
Department of Chemistry, Razi University, Kermanshah, Iran. mshamsipur@yahoo.com
Yari
Abdullah
A
Sharghi
Hashem
H
D000588:Amines / Q000737:chemistry*; D000880:Anthraquinones / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008958:Models, Molecular; D013050:Spectrometry, Fluorescence; D047392:beta-Cyclodextrins / Q000737:chemistry*
D000588:Amines; D000880:Anthraquinones; D047392:beta-Cyclodextrins; C042834:9,10-anthraquinone; C031215:betadex