Development of Strong Visible‐Light‐Absorbing Cyclometalated Iridium(III) Complexes for Robust and Efficient Light‐Driven Hydrogen Production
| العنوان: | Development of Strong Visible‐Light‐Absorbing Cyclometalated Iridium(III) Complexes for Robust and Efficient Light‐Driven Hydrogen Production |
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| المؤلفون: | Sze‐Chun Yiu, Po‐Yu Ho, Yan‐Yi Kwok, Xiaojie He, Yi Wang, Wai‐Hong Yu, Cheuk‐Lam Ho, Shuping Huang |
| المصدر: | Chemistry – A European Journal. 28 |
| بيانات النشر: | Wiley, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Organic Chemistry, General Chemistry, Catalysis |
| الوصف: | Weak light absorption of common Ir(III) complexes (e. g., using phenylpyridine as the ligand) has hindered their applications in photocatalytic hydrogen generation from water as an efficient photosensitizer. To address this issue, a series of cyclometalated Ir(III) complexes (Ir1-Ir5), featuring different electron-donating substituents to enhance the absorptivity, have been synthesized and studied as photosensitizers (PSs) for light-driven hydrogen production from water. Ir6-Ir7 were prepared as fundamental systems for comparisons. Electron donors, including 9-phenylcarbazole, triphenylamine, 4,4'-dimethoxytriphenylamine, 4,4'-di(N-hexylcarbazole)triphenylamine moieties were introduced on 6-(thiophen-2-yl)phenanthridine-based cyclometalating (C^N) ligands to explore the donor effect on the hydrogen evolution performance of these cationic Ir(III) complexes. Remarkably, Ir4 with 4,4'-dimethoxytriphenylamine achieved the highest turn-over number (TON) of 12 300 and initial turnover frequency (TOF |
| تدمد: | 1521-3765 0947-6539 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ebcc6e20829b17340ad623bd35c7b17 https://doi.org/10.1002/chem.202104575 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....0ebcc6e20829b17340ad623bd35c7b17 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15213765 09476539 |
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