NMR and luminescence binding studies of ytterbium, thulium, and europium macrocyclic complexes with phosphorus(V) oxy anions

被引：29

作者：

Atkinson, P

Bretonnière, Y

Parker, D

Muller, G

机构：

[1] Univ Durham, Dept Chem, Durham DH1 3LE, England

[2] San Jose State Univ, Dept Chem, San Jose, CA 95192 USA

来源：

HELVETICA CHIMICA ACTA | 2005年 / 88卷 / 03期

关键词：

D O I：

10.1002/hlca.200590025

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The binding of a series of phosphate anions to coordinatively unsaturated macrocyclic complexes of Yb, Tm, and Eu was studied by H-1-NMR, emission and circularly polarized luminescence (CPL) spectroscopy. Each ternary adduct was distinguished by its spectral profile. With O-phosphorylated amino acids and peptides, chemoselective ligation of the phosphate moiety was favored by Eu over chelation involving the terminal amino group, which was competitive for Tm and Yb. A preference for binding O-phosphono-L-tyrosine sites was found with various Eu complexes, and was signalled by ratiometric changes in metal-based emission and CPL spectra.

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页码：391 / 405

页数：15

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