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The selective adsorption of APPT-Cd-MOF 1 for propyne, 2-butyne and phenylacetylene was confirmed by single-crystal analysis. In addition, the selective adsorption performance of Cd-MOF for CH/CH/CH was investigated. The matching of the functionality and size/shape between porous materials and guest molecules clarified the specific recognition of 1 for linear alkyne molecules.
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http://dx.doi.org/10.1039/d1cc05316g | DOI Listing |
Angew Chem Int Ed Engl
September 2025
State Key Laboratory of Low Carbon Catalysis and Carbon Dioxide Utilization, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, China.
Allylic alcohols are versatile and essential building blocks in synthetic chemistry, widely used for the preparation of complex molecules, pharmaceuticals, and materials. We report here a regiodivergent reductive hydroxymethylation of terminal alkynes with aqueous formaldehyde to prepare allylic alcohols enabled by visible light photoredox and cobalt dual catalysis. Using readily available, bulk, and cheap aqueous formaldehyde as a simple C1 source, this method allows for the selective production of both linear and branched allylic alcohols in one-step manner.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
August 2025
Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.
Among carbon allotropes, carbyne, composed solely of sp-hybridized carbon atoms, has garnered significant interest due to its potential unique physical and chemical properties. Nevertheless, the synthesis of carbyne or its analogs remains a persistent challenge, hindering further exploration in this area. Herein, a straightforward synthesis method is proposed to prepare TMS-capped sp-carbon hybridized carbonaceous material (TMS-C).
View Article and Find Full Text PDFChem Mater
August 2025
Department of Organic and Inorganic Chemistry and Research Institute in Chemistry ″Andrés M. Del Río″ (IQAR), University of Alcalá, 28805 Madrid, Spain.
In the biomedical field, the design of materials with controlled degradation is highly desired. Herein, we present a family of dendritic hydrogels accomplished through copper-assisted azide-alkyne cycloaddition click reaction between dendritic cross-linkers and complementary linear polymers. As cross-linkers, an innovative family of bifunctional carbosilane dendrimers was designed for this purpose, bearing multiple alkyne groups available for network formation as well as pendant hydroxyl groups for postfunctionalization.
View Article and Find Full Text PDFFront Chem
July 2025
Engineering Research Center of Sports Health Intelligent Equipment of Hubei Province, Wuhan Sports University, Wuhan, China.
This paper provides a strategy for detecting and monitoring volatile organic compounds released from plastic runway tracks. The method applies a simultaneous determination of 101 VOCs based on the environmental chamber-canister sampling-three-stage cold trap preconcentration-gas chromatography-mass spectrometry/flame ionization detection (GC-MS/FID) method. For this purpose, an environmental chamber, SUMMA canisters, an atmospheric pre-concentrator, and a GC-MS/FID dual detection setup were adopted to collect VOCs released from plastic athletic tracks in an environmental chamber, followed by their preconcentration in a three-stage cold trap including glass-bead cold trap concentration, Tenax tube cold trap concentration, and capillary glass tube absorption focusing.
View Article and Find Full Text PDFACS Omega
July 2025
Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721 302, India.
A series of polymesylated/polypropargylated polyols of different chain lengths were designed for the synthesis of the new varieties of 1,5-disubstituted 1,2,3-triazolyl fused bicyclic oxa-heterocycles under metal-free conditions. The orthogonally stable mesylated and propargylated polyol substrates were designed to avoid the use of highly reactive and/or unstable substrates decorated with azido and propargyl functionalities. The purpose was to allow the polymesylated/polypropargylated substrates to undergo intramolecular triazolylation under metal-free conditions to generate oxa-ring fused triazoles functionalized with azido or propargyl groups ready to undergo further transformation.
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