| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1235170 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2011 | 6 Pages |
Spectral characteristics of diphenylamine (DPA) have been investigated in β-cyclodextrin (β-CDx) solution. The formation of the complex was revealed by UV, steady state and time-resolved fluorescence spectroscopy. The stoichiometry of DPA:β-CDx complex, determined using Benesi–Hildebrand equation and Job's continuous variation method is 1:1. The binding constants calculated from various methods are reported. This inclusion complex formation from DPA and β-CDx was also confirmed by the FT-IR spectral study and SEM image analysis of solid complex prepared by co-precipitation method.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Enhancement of absorbance and fluorescence intensity occurs together with complex formation. ► Biexponential decay for DPA by the addition of β-CDx is due to the formation of inclusion complex. ► Binding constant and stoichiometry of DPA with β-CDx are calculated from BH plot. ► FT-IR and SEM images analysis confirm complex between DPA and β-CDx.
