Premium
Pyrrole‐Based π‐System–Pt II Complexes: Chiroptical Properties and Excited‐State Dynamics with Microsecond Triplet Lifetimes
Author(s) -
Hirata Goki,
Kobayashi Yoichi,
Sato Ryuma,
Shigeta Yasuteru,
Yasuda Nobuhiro,
Maeda Hiromitsu
Publication year - 2019
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.201900848
Subject(s) - microsecond , intersystem crossing , excited state , chemistry , pyrrole , ultrafast laser spectroscopy , triplet state , photochemistry , spectroscopy , absorption spectroscopy , crystallography , atomic physics , physics , organic chemistry , quantum mechanics , astronomy , singlet state
Heteroleptic Pt II complexes comprising π‐extended dipyrrins and 2‐phenylquinoline were prepared. Single‐crystal X‐ray analysis disclosed the stepped conformations of two ligand moieties in these Pt II complexes. The enantiomers could be separated by HPLC and their configurations were determined from CD spectroscopy results and TD‐DFT calculations. Transient absorption measurements revealed excited‐state dynamics characterized by fast intersystem crossing and microsecond‐order triplet‐state lifetimes.