ISSN:
1573-1111
Keywords:
Toluidine blue O
;
Meldola's blue
;
cyclodextrin
;
inclusion complex
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The absorption and emission spectral properties of toluidine blue O (TBO) and Meldola's blue (MDB) in the presence of cyclodextrins (CDs) were studied. Formation of 1 : 1 and 1 : 2 (CD-Dye) inclusion complexes were observed with β-CD and γ-CD, respectively. An increase in the emission intensity was noticed in the presence of β-CD due to the formation of 1 : 1 (CD-Dye) inclusion complexes. However, a decrease in the emission intensity was observed in the presence of γ-CD due to the formation of 1 : 2 (CD-Dye) inclusion complexes. Dimerization of dye molecules in the presence of γ-CD lead to a decrease in the emission intensity. The formation constants for the 1 : 1 and 1 : 2 (CD-Dye) inclusion complexes were calculated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008085829227
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