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| Type |
Poster Presentation |
| Area |
Physical Chemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
PHYS.P-172 |
| Subject |
Investigation of the Light Harvesting Mechanism in Ir-core Dendrimer using Singular Value Decomposition (SVD) |
| Authors |
So-Yoen Kim, Ju Hyoung Jo, Chul Hoon Kim, DAE WON CHO, Sang Ook Kang, Ho-Jin Son*
Department of Advanced Materials Chemistry, Korea University, Korea
|
| Abstract |
In order to investigate the light-energy harvesting mechanism, a series of dendrimers with a heteroleptic iridium(III) complex core, [Ir(dmb)2(pic-Czn)] (Gn: n = 1, 2, and 3) was synthesized. The Ir-core [Ir(dmb)2(pic-OCH3), G0] shows a blue emission at ~500 nm, which is assigned to 3MLCT phosphorescence. This phosphorescence was enhanced with increasing generations due to the increase in the total absorbance of the Cz-dendron. The light-harvesting efficiencies determined by various methods were approximately 160 (G1), 220 (G2), and 330% (G3). The energy transfers efficiencies for G1–G3 from the peripheral Cz-dendron to the Ir-core complex were above 97%. The time-resolved TA band correlated with the core Ir-complex was observed at 500 nm, though it overlapped and interfered with the intense TA band of the Cz-dendrons. Therefore, we attempted a global analysis by singular value decomposition (SVD). |
| E-mail |
jojuhyoung@korea.ac.kr |
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121st General Meeting of the KCS