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|
| Type |
Poster Presentation |
| Area |
Inorganic Chemistry |
| Room No. |
Event Hall |
| Time |
4월 19일 (목요일) 11:00~12:30 |
| Code |
INOR.P-152 |
| Subject |
Planar Bridging Ligand Effect on Excited-State
Properties of Ir(III)-Pt(II) Bimetallic Complexes |
| Authors |
Hyun Wook Cha, So-Yoen Kim, Chul Hoon Kim, Sang Ook Kang, Ho-Jin Son*
Department of Advanced Materials Chemistry, Korea University, Korea
|
| Abstract |
Photodynamic behaviors in Ir(III)-Pt(II) bimetallic complex were differentiated by changing bridging ligand that connect the two metal centers: twisted co-planar (2,3-bis(2-pyridyl)pyrazine, dpp) and fully-planar moiety (4,7-phenanthrolino-5,6:5',6'-pyrazine, ppz). In particular, low-energy excitation (530 nm) makes a clear distinction between photo-induced electron transfer (PET) and hole transfer (PHT) after photo-excitation of bimetallic complex that otherwise would not be able to be achieved under high excitation beam energy. The PHT process was only observed in (dfppy)2Ir-dpp-PtCl. The fast quenching process occurring in the Ir-3MLCT state of (dfppy)2Ir-dpp-PtCl was further investigated by time-resolved photoluminescence (TRPL) and femtosecond transient absorption (TA) spectroscopy. |
| E-mail |
gugu154@korea.ac.kr |
|
121st General Meeting of the KCS