Many fullerenes that violate the isolated pentagon rule (IPR) form stable metallofullerenes. In general, a fullerene cage is kinetically stabilized by acquiring a given number of electrons. Kinetic stability of negatively charged non-IPR fullerenes, including the recently isolated endohedral metallofullerene with a heptagonal face, was rationalized in terms of bond resonance energy (BRE). Interestingly, molecular anions of conventional fullerenes found in most isolated metallofullerenes are kinetically stable with large positive BREs for all CC bonds. As we pointed out in 1993, the IPR does not apply to charged fullerenes because π-bonds shared by two five-membered rings are aromatized to varying extents.
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http://dx.doi.org/10.1021/acs.jpca.5b03468 | DOI Listing |
Ultrason Sonochem
March 2025
College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China.
To improve the efficiency of harvested quinoa seed wash processing, this study comparatively evaluated the effects of ultrasound-assisted hydration (UH) and conventional hydration (CH) on hydration dynamics, saponin mass transfer kinetics, and pericarp structural changes in quinoa seeds. Moisture uptake was monitored using a gravimetric method, saponin content was determined through enzyme-linked immunosorbent assay, and pericarp structural changes were observed via scanning electron microscopy. The results showed that UH significantly enhanced the water absorption rate of quinoa seeds, with the Peleg model effectively fitting all hydration stages (R > 0.
View Article and Find Full Text PDFFood Chem
March 2025
National Key Laboratory of Chinese Medicine Modernization, Institute of Traditional Chinese Medicine, State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Haihe Laboratory of Modern Chinese Medicine, Tianjin 301617, China. Electronic address:
Methylglyoxal (MGO) is a reactive carbonyl compound that forms advanced glycation end products (AGEs), which are associated with diseases such as diabetes, cancer, and Alzheimer's disease. Turmeric, which contains bioactive diarylheptanoids, has compounds like curcumin that can trap MGO and inhibit the formation of AGEs. However, diarylheptanoids suffer from poor stability and solubility, complicating their use in standard methods.
View Article and Find Full Text PDFJ Colloid Interface Sci
March 2025
Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center and Lab for Catalytic Technology, Heilongjiang University, Harbin 150080, PR China. Electronic address:
Herein, a WO nanorod array photoanode is controllably synthesized via a urea-modulated hydrothermal process, after which iron phthalocyanines (FePcs) with tunable Fe centers (H-FePc) are in situ deposited onto the surface of WO nanorods through electrodeposition, followed by a hydrogen reduction treatment. The optimized H-FePc/WO photoanode exhibits a remarkable photocurrent density of 2.44 mA cm at 1.
View Article and Find Full Text PDFJ Colloid Interface Sci
March 2025
College of Physics, Sichuan University, Chengdu 610065, China. Electronic address:
This study presents a dual-layer artificial dura mater, a hierarchically structured fibrous membrane composed of poly(p-dioxanone) (PPDO) and bioactive glass (BG), fabricated using electrospinning and melt-casting techniques. Designed to address the challenges of dura mater repair, the membrane features a dense outer PPDO layer for mechanical resilience and an electrospun inner layer embedded with BG to enable controlled ion release, promoting tissue regeneration and angiogenesis. We evaluated the fibrous membrane's surface morphology, mechanical properties, hydrophilicity, and in vitro degradation, demonstrating that increasing BG content enhances hydrophilicity, reduces crystallinity, and modulates degradation kinetics.
View Article and Find Full Text PDFJ Colloid Interface Sci
March 2025
National Base for International Science & Technology Cooperation of New Energy Equipment, Energy Storage Materials and Devices, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage & Conversion, School of Chemistry, Xiangtan University, Xiangtan 411105 Hunan, China.
Lithium-sulfur batteries (LSBs) are considered to be competitive next-generation electrochemical energy storage devices, but their practical application is severely hampered by the shuttle effect and slow redox kinetics of soluble lithium polysulfides (LiPSs). To address this challenge, FeS encapsulated within N/S co-doped bamboo-like carbon nanotubes (FeS/NSC) is synthesized via a pyrolysis sulfidation process, and act as a coating separator for LSBs. The 1-dimensional (1D) S and N co-doped carbon substrate materials can act as conductive networks, exposing more adsorption sites and enhancing the capture of LiPSs.
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