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Hydrogen-Bonded Organic Framework Nanosheets with Rich Free Oxygen Atoms for NO Sensing.
Inorg Chem
January 2025
School of Materials Science and Engineering, Hainan University, Haikou 570228, China.
Hydrogen-bonded organic frameworks (HOFs) are under fast development in broad applications but have not been well explored for chemiresistive gas sensing yet primarily due to insufficient active sites. Herein, a new porphyrin-based HOF-199 is constructed by OH···O hydrogen bonds featuring layered networks and rich free oxygen (O) atoms, which is further exfoliated into few-layer nonosheets with more dangling O sites through an ultrasound-assisted liquid exfoliation method (namely L-HOF-199). Benefiting from rich electron-donor sites, L-HOF-199 demonstrates exceptional NO sensing properties under ambient conditions, achieving a remarkable 3.
View Article and Find Full Text PDFA Lewis basic site rich metal-organic framework featuring a hydrogen-bonded acetylene nano-trap for the efficient separation of CH/CO.
Dalton Trans
January 2025
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi Province, China.
The physical separation of CH from CO on metal-organic frameworks (MOFs) has received a substantial amount of research interest due to its advantages of simplicity, security, and energy efficiency. However, the exploitation of ideal MOF adsorbents for CH/CO separation remains a challenging task due to their similar physical properties and molecular sizes. Herein, we report a unique CH nano-trap constructed using accessible oxygen and nitrogen sites, which exhibits energetic favorability toward CH molecules.
View Article and Find Full Text PDFHydrogen-Bonded Organic Framework Nanoscintillators for X-Ray-Induced Photodynamic Therapy in Hepatocellular Carcinoma.
Adv Mater
January 2025
Department of Hepatobiliary Surgery, Eastern Hepatobiliary Surgery Hospital, Naval Medical University, Shanghai, 200438, P. R. China.
X-ray induced photodynamic therapy (X-PDT) leverages penetrating X-ray to generate singlet oxygen (O) for treating deep-seated tumors. However, conventional X-PDT typically relies on heavy metal inorganic scintillators and organic photosensitizers to produce O, which presents challenges related to toxicity and energy conversion efficiency. In this study, highly biocompatible organic phosphorescent nanoscintillators based on hydrogen-bonded organic frameworks (HOF) are designed and engineered, termed BPT-HOF@PEG, to enhance X-PDT in hepatocellular carcinoma (HCC) treatment.
View Article and Find Full Text PDFComparison of blending and bonding of phytic acid arginine salt and cellulose nanofibers on their synergistic flame-retardant effect in poly (butylene succinate).
Int J Biol Macromol
January 2025
School of Light Industry Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; China Advanced Flame Retardant Engineering Technology Research Center for Light Industry, Beijing 100048, China; Engineering laboratory for halogen-free flame retardants for polymer materials in the petroleum and chemical industry, Beijing 100048, China.
In this study, cellulose nanofibers (CNFs) were utilized as a synergistic agent, and combined with phytic acid arginine salt (PaArg) via blending and bonding. The effects of these different binding techniques of CNFs and PaArg on the flame retardant and mechanical properties of poly (butylene succinate) (PBS) were explored. The results indicated that both blended and bonded CNFs and PaArg enabled PBS composites to achieve a UL 94 V-0 rating, with the limiting oxygen index (LOI) value of the composite exceeding 28 %.
View Article and Find Full Text PDFEndogenetic Carbon Dot Strategy within Melamine-Formaldehyde Microspheres for Multifunctional Hybrid Fluorescence/Room-Temperature Phosphorescence Applications in Dry States and Aqueous Environments.
ACS Appl Mater Interfaces
January 2025
School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China.
Developing hybrid fluorescence (FL)/room-temperature phosphorescent (RTP) materials in dry-state, aqueous, and organic solvents holds paramount importance in broadening their applications. However, it is extremely challenging due to dissolved oxygen and solvent-assisted relaxation causing RTP quenching in an aqueous environment and great dependence on SiO-based materials. Herein, an efficient endogenetic carbon dot (CD) strategy within melamine-formaldehyde (MF) microspheres to activate RTP of CDs has been proposed through the pyrolysis of isophthalic acid (IPA) molecules and branched-chain intra-microspheres.
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