📄 Category

chemistry

1695 papers

📄 chemistry

Anion-directed self-assembly synthesis, crystal structures and antibacterial activity of nickel(II) complexes derived from 1-(((2-(pyrrolidin-1-yl)ethyl)imino)methyl)naphthalen-2-ol

This study reports the anion-directed self-assembly synthesis, crystal structures, and enhanced antibacterial activities of four novel nickel(II) Schiff base complexes, demonstrating that auxiliary anions effectively regulate coordination motifs and that the resulting trinuclear complex exhibits superior antimicrobial efficacy compared to the free ligand.

Zhong-Lu You, Zheng-Wei Wu, Yu-Qun Ye, Jin Mu, Ji-Ke Muji2026-08-31
📄 chemistry

Preparation of Gelatin-Based Composite Aerogels with Uniform Multi-Level Porous Structure via the Inverse Temperature Response of Methylcellulose-Gelatin Gels

By leveraging the synergistic opposite temperature-responsive behaviors of methylcellulose and gelatin, this study successfully fabricated a double-crosslinked composite aerogel with a uniform multi-level porous structure that exhibits significantly enhanced mechanical strength, porosity, and superior fragrance adsorption and sustained-release capabilities.

Hongli Li, Ling Qin, Keyi Xiao, Zhaocheng Fan, Haijun Yu, Yanpeng Qi, Chaoyin Nie2026-08-31
📄 chemistry

Extraction and cross-flow ultrafiltration tailor molecular architecture, antioxidant activities and immunostimulatory properties of fucoidans from Sargassum angustifolium

This study demonstrates that sequentially fractionating *Sargassum angustifolium* fucoidans via ethanol precipitation and cross-flow ultrafiltration effectively reduces structural heterogeneity to reveal that specific molecular weight subfractions, particularly the 2–10 kDa range, exhibit superior antioxidant and immunostimulatory activities driven by a synergistic interplay of molecular architecture, sulfation, and monosaccharide composition.

Fatemeh Yousefi Qomishloo, Mehdi Tabarsa, Zabihallah Bahmani2026-08-30
📄 chemistry

Analysis of the hydration heat evolution in cements incorporating construction waste powders by examining phase changes

This study demonstrates that incorporating recycled ceramic, brick, and concrete powders as cement substitutes in eco-friendly mortars significantly reduces hydration heat by up to 45% and delays peak reaction, thereby offering a sustainable solution for concreting in hot climates while altering the underlying phase change kinetics.

Manal Ezziane, Adem Ait Mohamed Amer, Karim Ezziane, Mhamed Adjoudj2026-08-28
📄 chemistry

Novel 3D porous TMU-12 metal–organic framework based on cobalt clusters, a promising material for fabricating flexible supercapacitor electrodes

This study introduces the cobalt-based metal–organic framework TMU-12 as a highly stable and competitive active material for flexible supercapacitor electrodes, demonstrating a specific capacitance of 206.93 F·g⁻¹ and exceptional cycling retention of 90.85% after 2000 cycles without requiring chemical modification.

Hamideh Mohammadian-Sarcheshmeh, Mohammad Mazloum-Ardakani, Meysam Safari2026-08-28
📄 chemistry

Water-unlocked formation of active oxygen vacancies in perovskite fuel-cell cathodes

By partially substituting Y with Yb in perovskite fuel-cell cathodes, researchers discovered that water in humid air unlocks the formation of active oxygen vacancies near redox-active cations by occupying vacancies near redox-inactive cations, thereby doubling oxygen reduction reaction activity and enabling stable, high-performance protonic ceramic fuel cells.

Mengran Li, Desheng Feng, Tianjiu Zhu, Hengyue Xu, Vanessa K. Peterson, Anita D'Angelo, Penghui Yan, Xiaoyang Du, Xiaohe (…)2026-08-28
📄 chemistry

Ni–Co–S/MOF@ Functionalized MWCNT Composite as a High-Performance Electrode Material for Symmetric Supercapacitors

This study demonstrates that a hydrothermally synthesized Ni–Co–S/MOF@F-MWCNT ternary composite serves as a high-performance electrode for symmetric supercapacitors, delivering a specific capacitance of 820 F g⁻¹, excellent cycling stability, and an energy density of 41.40 Wh kg⁻¹ through the synergistic integration of porous sulfide domains and conductive carbon nanotubes.

Mehran Mehravar, Hossein Dehghani, Ali Ehsani2026-08-28
📄 chemistry

CuO/Fluorinated Graphite Photothermal Superhydrophobic Coatings: Gradient Synergistic Modulation for Anti- and De-icing Applications

This study presents a CuO/fluorinated graphite photothermal superhydrophobic coating fabricated on copper contact wires via a two-step spray process, which synergistically combines hierarchical micro/nano architecture for passive anti-icing and high-efficiency photothermal conversion for active de-icing to effectively mitigate ice accretion on electrified railways.

Chaopeng Liu, Ziqi Liu, Enfan Cao, Yan Lin, Yunyun Duan, Yihan Zhang, Liangliang Xiong2026-08-28
📄 chemistry

p-Phenylenediamine-bridged periodic mesoporous organosilica with accessible amine sites for efficient CO2 adsorption under mild conditions

This study reports the synthesis of p-phenylenediamine-bridged periodic mesoporous organosilica (PPDA-PMO) via a co-condensation route, which demonstrates superior CO2 adsorption capacity and reusability under mild conditions due to its accessible and cooperative amine sites within an ordered mesostructure.

Maryam Mahnampour, Mohammad G. Dekamin2026-08-28