| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터) |
| 권호 |
43권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Investigation of Site-Selective Electron Transfer in Ir(III)-Pt(II) Bimetallic Complexes by Low Energy Excitation |
| 초록 |
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. |
| 저자 |
조주형, 조양진, 김소연, 김철훈, 강상욱, 손호진
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| 소속 |
고려대 |
| 키워드 |
Ir(III)-Pt(II) |
| E-Mail |
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