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An Ultramicroporous Physisorbent Sustained by a Trifecta of Directional Supramolecular Interactions.
J Am Chem Soc
January 2025
Bernal Institute and Department of Chemical Sciences, University of Limerick, Limerick V94 T9PX, Ireland.
2D and 3D porous coordination networks (PCNs) as exemplified by metal-organic frameworks, MOFs, have garnered interest for their potential utility as sorbents for molecular separations and storage. The inherent modularity of PCNs has enabled the development of crystal engineering strategies for systematic fine-tuning of pore size and chemistry in families of related PCNs. The same cannot be said about one-dimensional (1D) coordination polymers, CPs, which are understudied with respect to porosity.
View Article and Find Full Text PDFControlled preparation of cellulose acetate by deep eutectic solvent homogeneous catalysis.
Carbohydr Polym
February 2025
Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
This work proposed a homogeneous preparation strategy of cellulose acetate by using a deep eutectic solvent consisting of zinc chloride/phosphoric acid/water (ZnCl/PA/HO). The results showed that the DES (the molar ratio of ZnCl: PA: HO = 1:1:3) had good solubility for bamboo pulp with high degree of polymerization. The dynamic dissolution behavior of cellulose in DES was also studied.
View Article and Find Full Text PDFSingle crystal diffraction study of Ba[HCO][HCO][HCO][HCO], a hydrous mixed sp/sp-carbonate.
Chem Commun (Camb)
December 2024
Goethe University Frankfurt, Institute of Geosciences, Altenhöferallee 1, 60438 Frankfurt, Germany.
We have synthesized the first hydrous sp-carbonate by laser-heating Ba[CO], CO and HO in a diamond anvil cell at 40(3) GPa. The crystal structure of Ba[HCO][HCO][HCO][HCO] was determined by synchrotron single crystal X-ray diffraction. The experiments were complemented by DFT-based calculations.
View Article and Find Full Text PDFSimple divalent metal salts as robust and efficient initiators for the ring-opening polymerisation of -lactide.
RSC Adv
November 2024
EaStCHEM School of Chemistry, University of Edinburgh Edinburgh EH9 3FJ UK
Simple divalent metal benzoxides are reported as robust and efficient catalysts for lactide (LA) polymerisation. Following a "pre-stir" step to aid solubility, the best performing catalyst, Zn(OBn), gave quantitative monomer conversion in just 30 seconds and performed well under industrially relevant settings with high monomer loadings, bulk polymerisation conditions and non-anhydrous conditions using technical grade LA.
View Article and Find Full Text PDFSemi-interpenetrating polybenzimidazole membrane containing polymeric ionic liquid with high power density and enhanced proton conductivity for fuel cells.
J Colloid Interface Sci
March 2025
School of Chemical Engineering, Changchun University of Technology, Changchun 130012, People's Republic of China; Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, People's Republic of China. Electronic address:
In phosphoric acid (PA)-doped polybenzimidazole (PBI) membranes designed for high-temperature proton exchange membranes (HT-PEMs), increasing the PA doping is essential. Yet, excessive PA doping causes a decline in mechanical strength, which in turn affects the cell performance. We utilize a strategy that integrates elevated PA absorption, increased mechanical strength, and enhanced PA retention.
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