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A twofold interpenetrated three-dimensional barium(II) metal-organic framework constructed from 2,2'-[terephthaloylbis(azanediyl)]diacetate: synthesis, structure, dihydrogen bonding and spectroscopic properties.
Acta Crystallogr C Struct Chem
January 2025
College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People's Republic of China.
A new twofold interpenetrated 3D metal-organic framework (MOF), namely, poly[[μ-aqua-diaqua{μ-2,2'-[terephthaloylbis(azanediyl)]diacetato}barium(II)] dihydrate], {[Ba(CHNO)(HO)]·2HO}, (I), has been assembled through a combination of the reaction of 2,2'-[terephthaloylbis(azanediyl)]diacetic acid (TPBA, HL) with barium hydroxide and crystallization at low temperature. In the crystal structure of (I), the nine-coordinated Ba ions are bridged by two μ-aqua ligands and two carboxylate μ-O atoms to form a 1D loop-like Ba-O chain, which, together with the other two coordinated water molecules and μ-carboxylate groups, produces a rod-like secondary building unit (SBU). The resultant 1D polynuclear SBUs are further extended into a 3D MOF via the terephthalamide moiety of the ligand as a spacer.
View Article and Find Full Text PDFDesign and fabrication of xylan-graft-poly (methyl methacrylate) thermoplastic via SARA ATRP.
Int J Biol Macromol
January 2025
Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China; State Key Laboratory of Efficient Production of Forest Resources, Beijing Forestry University, Beijing 100083, China. Electronic address:
Due to the emphasis on the environmental and health issues caused by petroleum-based plastics, renewable lignocellulosic materials emerge as promising substitutes. However, their practical application remains hindered by unsatisfactory properties such as fragility and sensitivity to water. Dealing with the challenge of non-thermal processing of xylan and addressing the issue of performance degradation resulting from the hygroscopicity of materials.
View Article and Find Full Text PDFThioether functionalized degradable poly(amino acids) and its calcium sulfate/calcium hydrogen phosphate composites: Reducing oxidative stress and promoting osteogenesis.
Colloids Surf B Biointerfaces
December 2024
College of Physical, Sichuan University, Chengdu, Sichuan 610065, PR China. Electronic address:
The imbalance of redox homeostasis, especially the abnormal levels of reactive oxygen species (ROS), is a key obstacle in the bone repair process. Therefore, developing materials capable of scavenging ROS and modulating the microenvironment of bone defects is crucial for promoting bone repair. In this study, to endow poly(amino acids) (PAA) and its composites with anti-oxidative stress properties and enhanced osteogenic differentiation, we designed and prepared a calcium sulfate/calcium hydrogen phosphate/poly(amino acids) (PCDM) composite material with a thioether structure (-S-) in the molecular chain of PAA matrix through situ polymerization and physical blending method.
View Article and Find Full Text PDFUnderstanding Tankyrase Inhibitors and Their Role in the Management of Different Cancer.
Curr Cancer Drug Targets
January 2025
Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Nilgiris, Tamil Nadu, India.
Cancer manifests as uncontrolled cell proliferation. Tankyrase, a poly(ADP-ribose) polymerase member, is vital in Wnt signal transmission, making it a promising cancer therapy target. The Wnt/β-catenin pathway regulates critical biological processes like genomic stability, gene expression, energy utilization, and apoptosis.
View Article and Find Full Text PDFFrom signal-off to signal-on: polyT linker alters signal response mode and enhances signal change of aptamer beacon probe.
Anal Bioanal Chem
January 2025
College of Chemistry and Chemical Engineering, Linyi University, Linyi, 276000, China.
A molecular beacon is an oligonucleotide hybridization probe that can report the presence of specific nucleic acids in homogeneous solutions. Using an aptamer has allowed an aptamer-based molecular beacon-aptamer beacon to be developed, which has shown advantages of simplicity, rapidity, and sensitivity in imaging and sensing non-nucleic acid substances. However, due to requirement for a deliberate DNA hairpin structure for the preparation of a molecular beacon, not any given aptamer is suitable for designing an aptamer beacon probe.
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