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The photocatalytic reduction of CO represents an environmentally friendly and sustainable approach for generating valuable chemicals. In this study, a thiophene-modified highly conjugated asymmetric covalent triazine framework (As-CTF-S) is developed for this purpose. Significantly, single-component intramolecular energy transfer can enhance the photogenerated charge separation, leading to the efficient conversion of CO to CO during photocatalysis. As a result, without the need for additional photosensitizers or organic sacrificial agents, As-CTF-S demonstrates the highest photocatalytic ability of 353.2 µmol g and achieves a selectivity of ≈99.95% within a 4 h period under visible light irradiation. This study provides molecular insights into the rational control of charge transfer pathways for high-efficiency CO photoreduction using single-component organic semiconductor catalysts.
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http://dx.doi.org/10.1002/advs.202402645 | DOI Listing |
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September 2025
College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014, P. R. China.
The functionality of covalent organic frameworks (COFs) is usually highly related to their morphologies. Among various morphologies, the hollow-structured COFs have recently attracted intense attention due to their unique properties. Herein, the synthesis of hollow structured COFs are first reported with the chiral internal sites via combining the chiral templating method with the acid etching approach.
View Article and Find Full Text PDFInorg Chem
September 2025
Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Key Laboratory of Light Energy Conversion Materials of Hunan Province College, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P. R. China.
The super bulky sodium phosphanide, NaP(SiPr), was reacted with amidinatotetrylenes LECl (L = PhC(NBu), E = Si, Ge), resulting in the formation of phosphasilene LSi(SiPr) = PSiPr () and phosphanido germylene LGeP(SiPr) (), respectively. Investigation on the reactivity of and toward elemental sulfur was carried out, where a stepwise reaction yielding the silanethione LSi(=S)SiPr () and the silicon thioester analogue LSi(=S)SSiPr () was observed in the case of , while the treatment of with sulfur exclusively afforded the germanium thioester analogue. In addition, the reactions of with Fe(CO) and GeCl·1,4-dioxane led to the germylene-coordinated iron carbonyl and the asymmetric Ge-Ge-bonded complex, respectively, exhibiting the reactivity of the lone pair as well as a weak Ge-P bond.
View Article and Find Full Text PDFIUCrdata
August 2025
Chemistry Department, Faculty of Science, Hadhramout University, Mukalla, Hadhramout, Yemen.
The asymmetric unit of the title compound, CHNO, contains two coplanar mol-ecules ( and ) completely located on mirror planes. In the crystal, N-H⋯O, N-H⋯N, C-H⋯O and C-H⋯N hydrogen bonds link the mol-ecules into sheets parallel to (010). There are neither significant π-π nor C-H⋯π(ring) inter-actions.
View Article and Find Full Text PDFEur J Med Chem
August 2025
Department of Pharmacy, University of Pisa, Via Bonanno 6/33, Pisa, Italy. Electronic address:
A set of small molecules containing an unusual sp-rich heterobicyclic scaffold were prepared and evaluated in vitro for their ability to increase GLP-1 secretion in STC-1 cells and to protect SH-SY5Y cells from acute and chronic damage induced by glucose and methylglyoxal, respectively. The results obtained showed that some compounds, especially those containing an electron-withdrawing and/or lipophilic group at the meta position of the aryl moiety present at position 9, are effective non-covalent TRPA1 agonists. The lead compound so far individuated (compound 4b) was also prepared by asymmetric synthesis in both enantiomeric forms.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
August 2025
State Key Laboratory of Green Pesticide; Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Huaxi District, Guiyang, 550025, China.
In contrast to the notable advancements focusing on the preparation of optically enriched S(IV) frameworks in recent years, achieving catalyst stereocontrol over S(VI) stereogenicity to generate chiral S(VI) scaffolds remains a largely underexplored challenge. Herein, we document a new activation mode of isothiourea organocatalysis for the highly enantioselective synthesis of S(VI)-chiral sulfonimidates. This method involves the covalent activation of racemic S(VI) sulfonimidoyl chlorides through the formation of a pivotal isothiourea-bound sulfonimidoyl intermediate.
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