1D-helical platinum(ii) complexes bearing metal-induced chirality, aggregation-induced red phosphorescence, and circularly polarized luminescence. Issue 13 (13th March 2019)

• Record Type: Journal Article
• Authors: Song, Jintong; Wang, Man; Xu, Xuemei; Qu, Lang; Zhou, Xiangge; Xiang, Haifeng
• Is Part Of: Dalton transactions. Volume 48:Issue 13(2019)
• Page Start: 4420
• Page End: 4428
• Publication Date: 2019-03-13
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c8dt03615b
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Binaphthyls-linked Pt(ii ) complexes with metal-induced chirality self-assemble to build 1D M or P helices and show aggregation/racemization-induced 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.