© 2019 Elsevier B.V. Spectral study indicates that the hydroxyl groups of calixarene are involved in the formation of intramolecular hydrogen bonds which stabilize the conformation of the pleated loop. Spectral characteristics, ...

The vibrational spectra of calixarenes with azobenzene units having sulfonate (p-SAC) and carboxylate (p-CAC) groups in the para position were recorded and analyzed. The optimization of the structure and analysis of normal ...