Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 144, Issue 10, Pages 4422-4430Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.1c11577
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Funding
- Natural Science Foundation of China [21875180, 22175138]
- Key Research and Development Program of Shaanxi [2021GXLH-Z023]
- Independent Innovation Capability Improvement Project of Xi'an Jiaotong University [PY3A066]
- China National Postdoctoral Program for Innovative Talents [BX2021231]
- Fundamental Research Funds for the Central Universities [sxjh032021099]
- China Postdoctoral Science Foundation [2021M692545]
- Natural Science Foundation of Shaanxi Province [2021JQ-043]
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A series of novel ortho-terphenylene viologen derivatives with through-space conjugation were reported. These derivatives showed strong photoluminescence and special redox characteristics, making them suitable for photocatalytic reactions and hydrogen production.
A series of novel ortho-terphenylene viologen derivatives (o-TPV2+) with through-space conjugation (TSC) via the combination of ortho-terphenylene skeletons with viologen structure is reported. Their optoelectronic properties can be adjusted by N-arylation or N-alkylation reactions. Compared with other viologen derivatives, o-TPV2+ not only exhibits strong photoluminescence but also retards the charge recombination process and stabilizes the diradical state without forming a quinoid structure due to the special TSC effect. Based on their special redox characteristics, o-TPV2+ was applied to the photocatalytic oxidative coupling of benzylamine with 96% yield. In addition, pTA-o-TPV2+ (tethered with p-toluic acid)-modified g-C3N4 was used for visible-light-driven hydrogen production for the first time, exceeding 15 times the rate over unmodified g-C3N4.
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