|
|||||
|
|
Pyrrole-Based π-System–PtII Complexes: Chiroptical Properties and Excited-State Dynamics with Microsecond Triplet Lifetimes |
|
| Authors: | Dr Goki Hirata Prof Yoichi Kobayashi Dr Ryuma Sato Prof Yasuteru Shigeta Dr Nobuhiro Yasuda Prof Hiromitsu Maeda |
| Institution: | 1. Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577 Japan;2. Center for Computational Sciences, University of Tsukuba, Tsukuba, 305-8577 Japan
RIKEN Center for Biosystems Dynamics Research (BDR), Suita, 565-0874 Japan;3. Center for Computational Sciences, University of Tsukuba, Tsukuba, 305-8577 Japan Department of Physics, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8577 Japan;4. Research and Utilization Division, Japan Synchrotron Radiation Research Institute, Sayo, 679-5198 Japan |
| Abstract: | Heteroleptic PtII 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 PtII 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. |
| Keywords: | chiroptical properties dipyrrins excited-state dynamics PtII complexes π-electronic systems |