Abstract

Lanthanide ions are strong Lewis acids. Their complexation to a variety of ligands can further enhance their Lewis acidity allowing the hydrolysis of phosphoesters and even DNA. We show that the interaction of lanthanide ions with vesicles from zwitterionic phosphatidylcholine lipids gives supramolecular structures in which the metal ion is loosely coordinated to the surface. This assembly provides a high density of Lewis-acidic metal centres, which hydrolyze phosphodiesters with enhanced rates.

Highlights

  • Phosphodiesters are among the most important functional groups in nature

  • We show that the interaction of lanthanide ions with vesicles from zwitterionic phosphatidylcholine lipids gives supramolecular structures in which the metal ion is loosely coordinated to the surface

  • We have investigated the interaction of lanthanide cations and 100 nm vesicles prepared from the zwitterionic lipid 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC)

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Summary

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Their complexation to a variety of ligands can further enhance their Lewis acidity allowing the hydrolysis of phosphoesters and even DNA. We show that the interaction of lanthanide ions with vesicles from zwitterionic phosphatidylcholine lipids gives supramolecular structures in which the metal ion is loosely coordinated to the surface. This assembly provides a high density of Lewis-acidic metal centres, which hydrolyze phosphodiesters with enhanced rates

Introduction
Interaction of metal cations with DOPC vesicles
Different lipids
Conclusions
Findings
Comparison of the hydrolytic properties
Full Text
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