How to Prepare Kinetically Stable Self-assembled Pt12L24 Nanocages while Circumventing Kinetic Traps

E.O. Bobylev, D.A. Poole, B. de Bruin, J.N.H. Reek

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

© 2021 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbHSupramolecular coordination-based self-assembled nanostructures have been widely studied, and currently various applications are being explored. For several applications, the stability of the nanostructure is of key importance, and this strongly depends on the metal used in the self-assembly process. Herein, design strategies and synthetic protocols to access desirable kinetically stable Pt12L24 nanospheres are reported, and it is demonstrated that these are stable under conditions under which the palladium counterparts decompose. Descriptors previously used for palladium nanospheres are insufficient for platinum analogues, as the stronger metal–ligand bond results in a mixture of kinetically trapped structures. We report that next to the dihedral angle, the rigidity of the ditopic ligand is also a key parameter for the controlled formation of Pt12L24 nanospheres. Catalytic amounts of coordinating additives to labilise the platinum-pyridyl bond to some extent are needed to selectively form Pt12L24 assemblies. The formed Pt12L24 nanospheres were demonstrated to be stable in the presence of chloride, amines and acids, unlike the palladium analogues.
Original languageEnglish
Pages (from-to)12667-12674
JournalChemistry - A European Journal
Volume27
Issue number49
DOIs
Publication statusPublished - 1 Sept 2021
Externally publishedYes

Funding

We acknowledge the University of Amsterdam for their kind financial support to RPA sustainable chemistry.

FundersFunder number
Universiteit van Amsterdam

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