Zabiszak Michał, Frymark Justyna, Skrobanska Monika, Kaczmarek Malgorzata T, Jastrzab Renata
Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland.
Int J Mol Sci. 2025 May 8;26(10):4477. doi: 10.3390/ijms26104477.
In order to determine how lanthanide ions (La, Nd, Eu, Gd, Ho, Tb, Lu) coordinate in ternary systems with alpha-hydroxy acids (glycolic acid-GA; or tartaric acid-Tar) and spermine (Spm), potentiometric studies were conducted. In addition, binary systems of metal ions with alpha-hydroxy acids were studied, as well as the possibility of non-covalent interactions between the studied ligands. This study was carried out in aqueous solutions, and the composition of the formed complexes was confirmed using computer data analysis. Using spectroscopic measurements, the inner and outer coordination spheres of the central metal ion were determined. In ternary systems, via luminescent studies, the occurrence of the so-called 'antenna effect' was confirmed. These studies confirmed the formation of ternary complexes in which spermine can exist in the outer coordination sphere of lanthanide ions interacting non-covalently with an alpha-hydroxy acid in the inner coordination sphere.
为了确定镧系离子（镧、钕、铕、钆、钬、铽、镥）在与α-羟基酸（乙醇酸-GA；或酒石酸-Tar）和精胺（Spm）形成的三元体系中的配位方式，进行了电位滴定研究。此外，还研究了金属离子与α-羟基酸的二元体系，以及所研究配体之间非共价相互作用的可能性。本研究在水溶液中进行，并通过计算机数据分析确定了所形成配合物的组成。通过光谱测量，确定了中心金属离子的内配位层和外配位层。在三元体系中，通过发光研究证实了所谓“天线效应”的存在。这些研究证实了三元配合物的形成，其中精胺可以存在于镧系离子的外配位层中，与内配位层中的α-羟基酸非共价相互作用。
