期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 26, 期 48, 页码 11007-11012出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202001510
关键词
aggregation-induced emission; luminescence; metallophilic interactions; multinuclear; platinum
资金
- University of Strasbourg
- CNRS
- AXA Research funding
- Institut Universitaire de France (IUF)
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 Pt(II)units leading to an enhancement of the spectroscopic properties and how to address inter- versus intramolecular processes. Therefore, a series of neutral multinuclear Pt(II)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.
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