JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Peng-Fei Li,Chun-Li Hu,Bing-Xuan Li,Fang Kong,Jiang-Gao Mao
Two UV inorganic yttrium selenite optical materials, namely, Y(HSeO 3 )(SeO 3 )(H 2 O)·(H 2 O) (1) and Y 2 (SeO 3 ) 2 (SeO 4 )(H 2 O) 2 ·(H 2 O) 0.75 (2), have been synthesized successfully by hydrothermal reactions . Of these, Y 2 (SeO 3 ) 2 (SeO 4 )(H 2 O) 2 ·(H 2 O) 0.75 (2) is a new mixed valent selenium oxide containing Se(IV) and Se(VI) cations simultaneously. Y(HSeO 3 )(SeO 3 )(H 2 O)·(H 2 O) (1) shows a 3D structure composed of 2D yttrium selenite layers linked by O−H···O bonds. Y 2 (SeO 3 ) 2 (SeO 4 )(H 2 O) 2 ·(H 2 O) 0.75 (2) exhibits a 3D structure composed of 2D yttrium selenite layers connected by SeO 4 tetrahedron. Y(HSeO 3 )(SeO 3 )(H 2 O)·(H 2 O) (1) crystallized in a chiral space group P 2 1 2 1 2 1 and could display a moderate SHG intensity about 0.7 times of the commercial KH 2 PO 4 (KDP). Its powder laser damage threshold quantity was estimated to be 120.2 MW/cm 2 , which is about 46.2 times that of AGS (2.6 MW/cm 2 ). UV–vis–NIR spectra reflectance spectra showed that these solids are wide band gap compounds with Eg of 5.5 and 5.1 eV respectively. Theoretical calculations disclosed that Y(HSeO 3 )(SeO 3 )(H 2 O)·(H 2 O) (1) is an indirect band gap structures and its bandgaps is determined by O and Se atoms.
研究领域:
无机化学
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材料科学
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DOI
高影响因子
Journal of Advanced Research
·
2026
·
IF 17.1
Zi-An Deng,Yibo Liu,Wenjing Shi,Jiayue Jin,Fengjun Guo,Di Wu,Qingjun Liu,Saowapa Chaiwong,Kunsong Chen
Introduction Developing advanced functional composites by integrating metal–organic frameworks (MOFs) with polymeric nanofibers are important research in materials science. This strategy of incorporating MOFs into polymeric nanofibers offers a promising route to fabricate multifunctional materials with controlled release and antimicrobial capabilities. However, most existing MOFs are metal-based, which poses potential metal ion leaching risks in food-contact scenarios; besides, achieving uniform MOF dispersion in polymeric matrices and enabling scalable fabrication of such composite nanofibers remain challenges. Objectives The present study aimed to develop a novel and scalable fabrication platform for food-grade MOF-nanofiber composites by integrating γ-cyclodextrin metal–organic frameworks (γ-CD-MOFs) with rapid microfluidic-blow-spinning (MBS). Methods γ-CD-MOF was synthesized using γ-cyclodextrin as a biomolecular ligand, followed by adsorption of thymol (THY) through electrostatic interactions. Molecular docking was conducted to elucidate the encapsulation and stabilization mechanisms. The THY-loaded γ-CD-MOF was incorporated into polycaprolactone (PCL) nanofibers via MBS to produce THY@γ-CD-MOF/PCL nanofiber films. Their physicochemical properties, mechanical performance, sustain release behavior, antimicrobial activity, biocompatibility, and preservation efficacy in fresh-cut fruits were evaluated. Results γ-CD-MOF achieved 78.3 % THY encapsulation. Docking revealed hydrogen bonding between the phenolic hydroxyl group of THY and hydroxyl groups of dual γ-CD units (1.781 Å), shorter than typical hydrogen bonds (∼3.5 Å), contributing to complex stability. MOFs were well-dispersed, and their incorporation enhanced the thermal stability, mechanical strength, and hydrophilicity of the nanofibers. The nanofiber films exhibited broad-spectrum antimicrobial activity, sustained THY release at 4 °C and 25°C, and good biocompatibility, effectively suppressing browning and firmness loss in fresh-cut apples. Conclusion The MBS-based platform enabled efficient fabrication of active food-grade γ-CD-MOF-loaded nanofiber preservation materials. THY encapsulation via hydrogen bonding and hydrophobic interactions provided sustained release and antimicrobial functionality, significantly extending the freshness of fresh-cut apples.
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DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2026
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IF 6.2
Di Chen,Kangzhuo Yang,Zhanglan He,Zhipeng Liu,Dong Zhao,Jia Zheng,Michael C. Qian
Grains are widely used for the fermentation of spirits, including baijiu. Wuliangye is one of the most renowned baijiu brands, fermented from a blend of five grains: sorghum, wheat, corn, rice, and glutinous rice. To understand the aroma contribution of the raw grains to the product quality, the aroma compounds of “five-grain” were comprehensively investigated by aroma extract dilution analysis (AEDA), “heart-cut” 2D gas chromatography–mass spectrometry/olfactometry (2D GC-GC-MS/O), and comprehensive gas chromatography-time-of-flight mass spectrometry (GC × GC-TOFMS). Thirty-four aroma-active compounds identified in the grains, primarily aldehydes, were further investigated using odor activity values (OAVs), aroma recombination, and omission studies. The results demonstrated that (E,E)-2,4-decadienal, 2-acetyl-1-pyrroline, (E,Z)-2,6-nonadienal, (E)-2-nonenal, (E,E)-2,4-nonadienal, trans-4,5-epoxy-2(E)-decenal, hexanal, and methional were the compounds in “five-grain” important to baijiu aroma. Understanding the origin and fate of these compounds will aid in further research and quality control of this renowned baijiu brand.
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PubMed
高影响因子
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