| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
분자전자 부문위원회 Ⅰ,Ⅱ |
| 제목 |
Secondary Coordination Effect on Mono-Bipyridyl Ru(II) Catalysts in Photochemical CO2 Reduction: Effective Proton Shuttle of Pendant Brønsted Acid/Base Sites (OH and N(CH3)2) and Its Mechanistic Investigation |
| 초록 |
While the incorporation of pendant Brønsted acid/base sites in the secondary coordination sphere is a promising and effective strategy to increase the catalytic performance and product selectivity in organometallic catalysis for CO2 reduction, the control of product selectivity still faces a great challenge. Herein, we report two new trans(Cl)-[Ru(6-X-bpy)(CO)2Cl2] complexes functionalized with saturated ethylene-linked functional group (bpy = 2,2′-bipyridine; X = –(CH2)2–OH or –(CH2)2–N(CH3)2) at the ortho(6)-position of bpy ligand, which are named Ru-bpyOH and Ru-bpydiMeN. From a series of in situ FTIR analyses, it was found that the Ru-formate intermediates are stabilized by a probable hydrogen bonding between pendent proton donors and the oxygen atom of metal-bound formate. Under such conformation, the liberation of formate becomes less efficient compared to the non-tethered case, lowering the CO2-to-formate conversion activities during photoreaction. |
| 저자 |
서윤정, 최민수, 이대한, 최성한, 강상욱, 손호진
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| 소속 |
고려대 |
| 키워드 |
tethering effect; CO2 reduction; photochemical
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| E-Mail |
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