betadex and 2-4-dinitroaniline

The formation of host-guest inclusion complex of 2,4-dinitroaniline (2,4-DNA) with nano-hydrophobic cavity of β-cyclodextrin (β-CD) in solution phase were studied by UV-visible spectrophotometer and electrochemical method (Cyclic Voltammetry, CV). The prototropic behaviors of 2,4-DNA with and without β-CD was studied by spectrophotometrically. The binding constant of the inclusion complex at 303K was calculated using Benesi-Hildebrand plot and thermodynamic parameter (ΔG) were also calculated. The inclusion complex formation between β-CD and 2,4-DNA was confirmed by (1)H NMR, 2D ROESY NMR, FT-IR, XRD and SEM analysis. The 2,4-DNA:β-CD inclusion complex was obtained by molecular docking studies and it was good correlation with the results obtained through experimental methods.

Topics: Aniline Compounds; beta-Cyclodextrins; Carbohydrate Conformation; Electrochemistry; Environmental Pollutants; Hydrogen-Ion Concentration; Molecular Docking Simulation; Quantum Theory; Temperature; Thermodynamics; Water

2,4-Dinitrophenol (2,4-DNP), 2,4-dinitroaniline (2,4-DNA), 2,6-dinitroaniline (2,6-DNA) and 2,6-dinitrobenzoic acid (2,6-DNB) has appeared for the UV absorption bands in different wavelength region below 400 nm, a combination of these dinitro aromatic compounds gave the broad absorption spectra within the UV region. The absorption intensities have been increased by preparation of the inclusion complex of dinitro compounds with β-cyclodextrin (β-CD). Prepared inclusion complexes are used to improve the UV protection properties of the ball point pen ink against photo degradation. The formation of solid inclusion complexes was characterized by FT-IR, and (1)H NMR spectroscopy. The UV protecting properties of these inclusion complexes were calculated their sun protection factor (SPF) is also discussed. The stability of the ballpoint pen ink has been confirmed by UV-Visible spectroscopic method.

Topics: 2,4-Dinitrophenol; Aniline Compounds; beta-Cyclodextrins; Ink; Magnetic Resonance Spectroscopy; Nitrobenzoates; Spectrophotometry, Ultraviolet; Spectroscopy, Fourier Transform Infrared; Ultraviolet Rays