Premium
Unusual Circularly Polarized and Aggregation‐Induced Near‐Infrared Phosphorescence of Helical Platinum(II) Complexes with Tetradentate Salen Ligands
Author(s) -
Song Jintong,
Wang Man,
Zhou Xiangge,
Xiang Haifeng
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201801414
Subject(s) - enantiopure drug , intramolecular force , phosphorescence , circular dichroism , luminescence , chemistry , platinum , crystallography , density functional theory , vibrational circular dichroism , photochemistry , materials science , stereochemistry , computational chemistry , organic chemistry , optics , enantioselective synthesis , optoelectronics , fluorescence , catalysis , physics
A series of chiral and helical Pt II ‐Salen complexes with 1,1′‐binaphthyl linkers were synthesized and characterized. Owing to the restriction of intramolecular motions of central 1,1′‐binaphthyls, the complexes exhibit unusual near‐infrared aggregation‐induced phosphorescence (AIP). The ( R )/( S ) enantiopure complexes were characterized by X‐ray diffraction, circular dichroism spectra, time‐dependent density functional theory calculations, and circularly polarized luminescence (CPL). The present work explores the use of tetradentate ligands that can be easily prepared from commercially available enantiopure compounds, and the subsequent preparation of stable CPL‐active square planar Pt II complexes with AIP effect that may have interest in many applications.