Abstract

This work is aimed at obtaining mixed cluster ions of amino acids with copper salts using soft ionization methods. We have shown that amino acid molecules are capable of forming aggregates stabilized by d-metals. In particular, such clusters can form in the presence of silver salts. In the present work, it is revealed that the largest cluster ions can be obtained using the electrospray ionization method. It is found that, upon ionization of amino acids (leucine, alanine, proline, tyrosine, and tryptophan) in the presence of copper salts, cluster associates with a mass of up to 1500 Da are formed. It is also found that the formation of cluster ions strongly depends on the nature of the amino acid and polarity of the charge in the cluster.

中文翻译：

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铜盐在“软”电离方法引发有机化合物团簇形成中的应用

摘要

这项工作旨在使用软电离方法获得氨基酸与铜盐的混合簇离子。我们已经证明氨基酸分子能够形成被d-金属稳定的聚集体。特别地，这种簇可以在银盐的存在下形成。在目前的工作中，揭示了可以使用电喷雾电离方法获得最大的簇离子。发现在铜盐存在下氨基酸（亮氨酸，丙氨酸，脯氨酸，酪氨酸和色氨酸）电离时，会形成质量高达1500 Da的簇缔合物。还发现簇离子的形成强烈地取决于氨基酸的性质和簇中电荷的极性。