On December 9, 2020, Qian, Yunyang; Li, Dandan; Han, Yulan; Jiang, Hai-Long published an article.Name: 1,4-Dimethoxybenzene The title of the article was Photocatalytic Molecular Oxygen Activation by Regulating Excitonic Effects in Covalent Organic Frameworks. And the article contained the following:
Excitonic effects caused by Coulomb interactions between electrons and holes play subtle and significant roles on photocatalysis, yet have been long ignored. Herein, porphyrinic covalent organic frameworks (COFs, specifically DhaTph-M), in the absence or presence of different metals in porphyrin centers, have been shown as ideal models to regulate excitonic effects. Remarkably, the incorporation of Zn2+ in the COF facilitates the conversion of singlet to triplet excitons, whereas the Ni2+ introduction promotes the dissociation of excitons to hot carriers under photoexcitation. Accordingly, the discriminative excitonic behavior of DhaTph-Zn and DhaTph-Ni enables the activation of O2 to 1O2 and O2•-, resp., under visible light irradiation, resulting in distinctly different activity and selectivity in photocatalytic terpinene oxidation Benefiting from these results, DhaTph-Ni exhibits excellent photocatalytic activity in O2•–engaged hydroxylation of boronic acid, while DhaTph-Zn possesses superior performance in 1O2-mediated selective oxidation of organic sulfides. This work provides in-depth insights into mol. oxygen activation and opens an avenue to the regulation of excitonic effects based on COFs. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Name: 1,4-Dimethoxybenzene
The Article related to photocatalytic mol oxygen activation regulating excitonic effect cof, Placeholder for records without volume info and other aspects.Name: 1,4-Dimethoxybenzene
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