Results 141 to 150 of about 24,479 (307)

A Stable Hemicarceplex With an Encapsulated Cationic Guest

open access: yesJournal of Physical Organic Chemistry, Volume 39, Issue 10, October 2026.
A hemicarcerplex with cobaltocenium ion on the inside and hexafluorophosphate on the outside was synthesized, and both it and its empty hemicarcerand precursor were characterized by X‐ray crystallography. The encapsulation equilibrium constant was also measured, and M06‐2X/cc‐pVDZ model computations are reported. ABSTRACT A hemicarcerand first reported
Casey Lee‐Foss   +3 more
wiley   +1 more source

Deciphering Recent Developments in Photocatalysis of Multimetallic Metal–Organic Frameworks and Their Composite Heterojunctions

open access: yesChemSusChem, Volume 19, Issue 18, 28 September 2026.
This review explores the potential of multimetallic organic framework (MMOF) composites as photocatalysts. It demonstrates the impact of the composite architecture on the photocatalytic performance and existing challenges. The paper highlights heterojunction mechanisms and the role of each partner composites in degradation, CO2 reduction, H2 production,
Youjian Chen   +8 more
wiley   +1 more source

Post‐Modification of Tripyrenylenes to Enantiopure π‐Extended D3‐Symmetric Propellers

open access: yesChemistry – A European Journal, Volume 32, Issue 36, 24 September 2026.
The post‐modification of tripyrenylenes to π‐extended enantiopure propellers with tris‐phenanthrophenazines is presented and the chiroptical properties as well as the solid‐state packings investigated in comparison to the corresponding racemic mixtures.
Dennis Popp   +8 more
wiley   +1 more source

Synthesis and Optical Properties of Diboron Complexes of 1,4‐Anthraquinone Derivatives

open access: yesChemistry – A European Journal, Volume 32, Issue 34, 11 September 2026.
1,4‐Diboron complexes exhibit near‐infrared fluorescence, in contrast to non‐emissive 1,5‐diboron analogues. Fluorescence quantum yields decrease with increasing electron‐donating substituents, attributed to enhanced nonradiative decay via intramolecular PeT.
Yasuhiro Kubota   +10 more
wiley   +1 more source

Detection Techniques for Polycyclic Aromatic Hydrocarbons and Their Metabolites: A Review

open access: yesphysica status solidi (a), Volume 223, Issue 17, 9 September 2026.
Overview of the different techniques that can be used to detect polyclic aromatic hydrocarbons and their metabolites. Polycyclic aromatic hydrocarbons (PAHs) are a class of organic pollutants affecting the environment as well as individual health that has been linked to various diseases including cancer.
Martin Wolfgang Konrad   +3 more
wiley   +1 more source

Aminoguanidine-Catalyzed Reductive Cyclization of o‑Phenylenediamines with CO2 in the Presence of Triethoxysilane

open access: yes
An inexpensive and efficient aminoguanidine-catalyzed reductive cyclization of o-phenylenediamines with CO2 in the presence of triethoxysilane is described.
Ke Gao (1521607), Yulin Sun (631461)
core   +1 more source

Alkoxyallenes in Modern Synthesis: Reactivity, Catalysis, and Complexity Generation

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 17, 1 September 2026.
The last decade has witnessed a remarkable transformation in alkoxyallene chemistry. Although historically employed as synthetic equivalents of acrolein or as versatile 3C synthons, alkoxyallenes are now increasingly recognized as highly adaptable platforms for synthetic design.
A. Lanfranco   +5 more
wiley   +1 more source

Glove Reuse Limits in Hair Dyeing: Permeation of p-Phenylenediamine and Aminophenols Through Natural Rubber Latex and Neoprene After Repeated Washing. [PDF]

open access: yesContact Dermatitis
Disposable glove reuse reduced chemical protection during repeated hair‐dye exposure. Under ASTM F739 testing, natural‐rubber‐latex deteriorated rapidly after one reuse, whereas neoprene performed better initially but also declined over repeated cycles. Wash type had no significant effect. These findings support single‐use only and discourage the reuse
Jian PT, Lin YW.
europepmc   +2 more sources

Enzyme@Silicone: A Versatile Combo for Robust Synthetic Biocatalysis?

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 17, 1 September 2026.
Silicone‐based polymers are versatile materials for enzyme immobilization, offering unique advantages such as chemical inertness, thermal stability, and tunable morphology. This review highlights their applications in synthetic biocatalysis, from batch to continuous processes, and addresses key challenges such as mass transport limitations and ...
Marion B. Ansorge‐Schumacher
wiley   +1 more source

A Multi‐Stimuli Transformational Network of Benzil‐Based Pd(II) Assemblies

open access: yesAngewandte Chemie, Volume 138, Issue 36, 1 September 2026.
Incorporation of a flexible and chemically reactive benzil backbone into the ligand structure allows it to access multiple conformations, enabling the formation of diverse homo‐ and heteroleptic Pd(II) assemblies with different nuclearities and topologies.
Zhiwei Zeng   +5 more
wiley   +2 more sources

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