# Multinuclear Pt$^{II}$ Complex: Why Three is Better Than Two to Enhance Photophysical Properties

Chakraborty, Sourav; Aliprandi, Alessandro; De Cola, Luisa

##### Abstract:
The self‐assembly of platinum complexes is a well‐documented process that leads to interesting changes of the photophysical and electrochemical behavior as well as to a change in reactivity of the complexes. However, it is still not clear how many metal units must interact in order to achieve the desired properties of a large assembly. This work aimed to clarify the role of the number of interacting PtII units leading to an enhancement of the spectroscopic properties and how to address inter‐ versus intramolecular processes. Therefore, a series of neutral multinuclear PtII complexes were synthesized and characterized, and their photophysical properties at different concentration were studied. Going from the monomer to dimers, the growth of a new emission band and the enhancement of the emission properties were observed. Upon increasing the platinum units up to three, the monomeric blue emission could not be detected anymore and a concentration independent bright‐yellow/orange emission, due to the establishment of intramolecular metallophilic interactions, was observed.

 Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT) Publikationstyp Zeitschriftenaufsatz Publikationsjahr 2020 Sprache Englisch Identifikator ISSN: 0947-6539, 1521-3765 KITopen-ID: 1000122020 HGF-Programm 43.21.04 (POF III, LK 01)Molecular Engineering Erschienen in Chemistry - a European journal Seiten chem.202001510 Vorab online veröffentlicht am 23.04.2020 Nachgewiesen in Web of ScienceScopus
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