| Autor: |
Cong-xue Liu, Dong-Lai Pan, Younggyu Seo, Seungjae Park, Jing-Lan Kan, Wonyong Choi, Eunsung Lee |
| Rok vydání: |
2022 |
| DOI: |
10.26434/chemrxiv-2022-6rf2x |
| Popis: |
The rational design of organic semiconductors based on crystalline covalent organic frameworks (COFs) as efficient photocatalysts is highly desirable. In this study, the first example of phenanthroimidazole-based COFs is reported: PImCOF1 with an imine linkage and PIm-COF2 with a β-ketoenamine-linkage. Both COF materials showed substantial optical properties. The average hydrogen evolution rate was 7417.5 μmolg-1h-1 for PIm-COF2, which was 20 times higher than that of PIm-COF1 (358.5 μmolg-1h-1). This can be attributed to the strong donor-acceptor effect of PIm-COF2 and the continuous separation and transfer of the photoexcited electron-hole pair from the phenanthro[9,10-d]imidazole moiety. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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