Issue 13, 2019

1D-helical platinum(ii) complexes bearing metal-induced chirality, aggregation-induced red phosphorescence, and circularly polarized luminescence

Abstract

A series of binuclear cyclometalated Pt(II) complexes with the bridge ligand of binaphthyl quinoline were synthesized and characterized. Owing to the restriction of intramolecular motions in chiral binaphthyl linkers, the complexes exhibited two unusual metal-induced chiral components and aggregation-induced red phosphorescence. The (R,R,R)/(S,S,S) enantiopure complexes that were confirmed by X-ray diffraction, circular dichroism spectra, time-dependent density functional theory calculations, and circularly polarized luminescence did not require purification by chiral high-performance liquid chromatography and could yield unique 1D M or P hierarchical helices of helices via intermolecular noncovalent interactions. Moreover, it is the first time that racemization-induced phosphorescence enhancement has been observed.

Graphical abstract: 1D-helical platinum(ii) complexes bearing metal-induced chirality, aggregation-induced red phosphorescence, and circularly polarized luminescence

Supplementary files

Article information

Article type
Paper
Submitted
07 9 2018
Accepted
27 2 2019
First published
28 2 2019

Dalton Trans., 2019,48, 4420-4428

1D-helical platinum(II) complexes bearing metal-induced chirality, aggregation-induced red phosphorescence, and circularly polarized luminescence

J. Song, M. Wang, X. Xu, L. Qu, X. Zhou and H. Xiang, Dalton Trans., 2019, 48, 4420 DOI: 10.1039/C8DT03615B

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