| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Electron Injection Process of Porphyrin Dye into Heterogeneous TiO2/Re(I) Photocatalyst |
| 초록 |
The net hetero-collisional electron transfer from the non-anchored fluorescent porphyrin sensitizer to the TiO2 catalytic particles was a major event during the initial stage of the catalysis. According to in situ UV‒Vis absorption spectroscopy and mass analysis of dye solution filtered after photolysis, the initially added porphyrin dye experienced a significant photodegradation accompanied by a breakage of π‒conjugation and loss of the bulky substituents. Acetyl- or ethyl-group modified porphyrins were prepared, respectively referred to as ZnPAcet and ZnPEt, and this modification elevated the corresponding excited-state energy levels when comparing ZnP with ZnPEt, consequently shortening the activity delay at the early stage of photolysis. Thus, chemical modification had a favorable effect on the photosensitizing and electron transportation abilities of the dye. |
| 저자 |
이대한, 최민수, 백창현, 최성한, 신재윤, 김철훈, 박종진, 강상욱, 손호진
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| 소속 |
고려대 |
| 키워드 |
Zn porphyrin; photocatalysis; CO2 reduction
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| E-Mail |
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