📄 Category

chemistry

1062 papers

📄 chemistry

Comparative phytochemical profiling and bioactivities of wild Thymus species from Mount Ida (Kazdağı)

This study provides the first integrated phytochemical and biological characterization of four wild *Thymus* species from Mount Ida (Kazdağı), revealing that *Thymus citriodorus* exhibits the highest antioxidant capacity, rosmarinic acid and thymol are the dominant phenolic and volatile compounds respectively, and all four species demonstrate significant antimicrobial activity against specific pathogens and concentration-dependent cytotoxicity against HT29 colorectal cancer cells.

Ümmügülsüm TÜKENMEZ EMRE, Muhammed GÜNGÖREN, Ramazan GÜNDOĞDU, Mustafa Yunus EMRE2026-06-24
📄 chemistry

Designing a pilot plant for treating condensed acid tar produced in oil re-refining factories as a feedstock of bitumen-based materials and catalytic cracking units

This paper presents the design and optimization of a pilot plant for treating condensed acid tar and spent clay from oil re-refining, utilizing water/oil emulsification and solvent extraction to separate components for conversion into bitumen-based materials and hydrocarbons via cracking, ultimately proposing a comprehensive industrial complex for integrated waste management and energy recovery.

Morteza Kazemitabar, Mohammad reza Toosi, Shahla Fathi2026-06-24
📄 chemistry

Mechanical constraint enables room temperature near infrared emission and triplet reactivity in nickel(II) chromophores

By employing a rigid macrocyclic ligand to mechanically constrain structural distortion in square planar nickel(II) complexes, this study achieves room-temperature near-infrared emission and long-lived triplet reactivity, effectively overcoming the non-radiative decay limitations typical of first-row transition metal chromophores.

Jun-Long Zhang, Ruijing Zhang, Zi-Yi Tang, Guangliu Ran, Zi-Cheng Wang, Nan She, Wenkai Zhang, Jing Zhang2026-06-24
📄 chemistry

A Minimal Sphere Model for the Emergence of VSEPR-Like Molecular Geometries

This paper demonstrates that familiar VSEPR-like molecular geometries, such as trigonal-bipyramidal and icosahedral arrangements, can emerge from a minimal geometric model where interacting nodes on a sphere are optimized for repulsion, suggesting that much of molecular geometry's descriptive structure arises from a single optimization principle rather than complex bonding rules.

Vladimir V. Yakovlev2026-06-24
📄 chemistry

Influence of Polymer Stabilizers on the Antimicrobial Efficacy of Zinc Oxide Nanoparticles

This study demonstrates that synthesizing zinc oxide nanoparticles with chitosan or polyvinyl pyrrolidone stabilizers yields nanocomposites with enhanced antimicrobial efficacy against various pathogens, with the chitosan-based variant showing superior performance due to synergistic effects involving reactive oxygen species generation and ion release.

Abothur Ghanim Almohanna, Thualfeqar Almohanna, Che Azurahanim, entidhar khmees2026-06-24✓ Author reviewed ⓘ
📄 chemistry

Fabrication and Characterization of Ferrite Nanoparticles on Porus Silicon for Gas Sensor Applications

This study reports the successful fabrication and characterization of Fe2O3 nanoparticles on porous silicon via chemical spray deposition, demonstrating that increasing precursor concentration reduces crystallite size and enhances gas sensor sensitivity up to 27.08, thereby confirming the material's viability for high-performance sensing applications.

TAGHREED MAHMOOD YOUNUS, SABREEN THANOON MALO, MOHAMMED IBRAHIM ISMAEL, GHAZWAN GHAZI ALI2026-06-24
📄 chemistry

Density Functional Theory Investigation of Electronic, Spectroscopic, Reactivity, and Nonlinear Optical Properties of Uracil in Neutral, Cation, and Anion States

This study employs density functional theory to comprehensively investigate the structural, electronic, spectroscopic, and nonlinear optical properties of uracil in neutral, cationic, and anionic states, revealing that ionization significantly alters bond geometries, enhances chemical reactivity, and dramatically increases nonlinear optical responses, particularly in the anionic form.

Santosh Dhungana, Sanjay Kumar Sah2026-06-24
📄 chemistry

Synergistic construction of SERS strategy by Fe 3 O 4 @PDA@AgNPs and GNA: accurate pursuit and efficient detection of probiotics

This study presents a synergistic SERS strategy utilizing Fe3O4@PDA@AgNPs and GNA for the rapid, highly sensitive, and accurate qualitative and quantitative detection of ten probiotics in complex samples, achieving detection limits below 10¹ CFU/mL with 97–99% accuracy.

Shijie Liu, Qian Ding, Huihui Zhi, Lijun Zhao, Miaoyun Li, Yanxia Liu, Haoyun Li, Dong Liang, Yaodi Zhu, Lingxia Sun, Ya (…)2026-06-24
📄 chemistry

From K-snack to copolymer: Conversion of Silkworm pupa oil into poly(3- hydroxybutyrate-co-3-hydroxyhexanoate) by engineered Cupriavidus necator H16

This study demonstrates the sustainable conversion of silkworm pupa oil, a byproduct of the silk industry, into high-value poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) biopolymers using engineered *Cupriavidus necator* H16, achieving superior cell growth and polymer yields compared to traditional carbon sources while producing biodegradable films.

Geonwoo Doh, Yuni Shin, Tae Yun Kim, Seung Hun Lee, Yun-Gon Kim, Hee Taek Kim, Woo-Young Jeon, Jungoh Ahn, Kwon-Young Ch (…)2026-06-24