One of the key feature of square planar Pt (II) complexes is their ability to self-aggregate. This phenomenon is driven by a variety of intermolecular forces including ligand-based as well as metallophilic Pt-Pt interactions. Self-aggregation was exploited extensively to access a variety of supramolecular materials. In search for new self-associating materials it is desirable to be able to gain information about the strength of intermolecular interactions between molecules. NMR dilution study is a well-established method to explore such interactions providing information on the magnitude of the bonding within the aggregates of Pt (II) complexes. Here we report on the self-association process of neutral cyclometallated complexes in solution combining this technique (NMR-investigation) with computational methods. For some of the Pt (II) complexes, the behaviour in solution is faced with the self-organization into liquid crystalline phases observed in the bulk.
NMR-spectroscopy, self-association, staking-aggregation
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