Spectroscopic study of the interaction of Nd3+ with amino acids: Phenomenological 4f-4f intensity parameters

• Autor(a) principal: Jericó, Soraya [UNESP]
• Data de Publicação: 1998
• Outros Autores: Carubelli, Célia R. [UNESP], Massabni, Ana M.G. [UNESP], Stucchi, Elizabeth B. [UNESP], Leite, Sergio R. de A. [UNESP], Malta, Oscar
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/S0103-50531998000500014; http://hdl.handle.net/11449/65628
• topic: Amino acids; Neodymium; Transition intensity parameters

We have studied the bevahior of the phenomenological 4f-4f intensity parameters in compounds of the Nd ion with glycine, L-aspartic acid, L-glutamic acid, L-histidine, DL-malic acid and Aspartame™ in aqueous solution, as a function of the pK values and partial charges on the oxygens of the carboxylate groups of these molecules. The results are discussed and qualitatively interpreted in terms of the forced electric dipole and dynamic coupling mechanisms of the 4f-4f intensities, thus indicating that the forced electric dipole mechanism is dominant.