Synthesis of Copper: 4, 4-Diamino 3, 3-Dimethyl Biphenyl: Cyclodextrin Nanomaterials and Ph Dependent Characteristics of 4,4-Diamino 3,3-Dimethyl Biphenyl: Cyclodextrin Inclusion Complexes

Abstract

The spectral characteristics of 4, 4-diamino 3, 3-dimethyl biphenyl (DADMB) with various solvents, α-cyclodextrin (α-CD) and β-cyclodextrin (β-CD) at pH ~3, pH~7, were investigated using UV–visible, fluorescence, time-resolved fluorescence measurements, and PM3 computational methods. The DADMB–CD inclusion complexes and Cu:DADMB:CD nanomaterials were synthesized and characterized by DSC, SEM, FTIR, 1H NMR and XRD techniques. DADMB form 1:2 inclusion complex with CD. In the DADMB molecule, the horizontal bond lengths between the amino groups are higher than the CD cavity size suggest DADMB not fully encapsulate in the CD cavity. The powdered form of Cu nano, DADMB, Cu:DADMB:α-CD and Cu:DADMB:-CD nanomaterials were investigated by SEM, DSC, FTIR, XRD and 1H NMR. SEM picture clearly shows the morphological difference between copper nano, DADMB and the Cu:DADMB:-CD. The chemical shift value of DADMB protons are shifts to up field and down field and the peak intensities are very low in the nano copper with CD nanomaterials indicate that all the protons of DADMB are interacting with Cu nano and CD cavity protons.