Growth and spectroscopy studies of ADP single crystals with l-proline and l-arginine amino acids

• Published in: Materials chemistry and physics Vol. 130; no. 1; pp. 24 - 32
• Main Authors: Ben Brahim, F., Bulou, A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 17-10-2011
• Subjects: ADP crystals; Amino acids; D. Crystal symmetry; Diffraction; Infrared radiation; IR Raman and NMR spectroscopy; Nuclear magnetic resonance; Shoulders; Single crystals; Slow evaporation; Spectra; X-rays; Slow evaporation; IR Raman and NMR spectroscopy; ADP crystals; D. Crystal symmetry
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2011.02.070

► ADP single crystals were grown with
l-proline and
l-arginine as guest molecules. ► This enhances some properties: piezo-electric, NLO, dielectric and antiferroelectic. ► Such compounds can be successfully used for hydrogen bonding studies.
Ammonium dihydrogen orthophosphate (ADP) single crystals were grown with
l-proline and
l-arginine amino acids as additives at 4% molar concentrations. X-ray diffractograms, vibrational FT-IR, and Raman and NMR MAS of
31P and
1H spectra of pure and treated compounds were recorded at room temperature and interpreted. A shift of the wavenumbers of some internal modes of both PO
4 and NH
4 tetrahedrons species was observed. At the same time, some characteristic vibrational modes of N–H and C–H bonds of the organic molecules appeared in IR spectra. However, NMR results show a little shift of the resonance of the phosphorus and hydrogen nucleus, associated with some shoulders for this latter. These observations indicate that the host-additives interactions were achieved.