Results 181 to 190 of about 22,513 (255)

Comparative Phytochemical Analysis of Five South African Bulbine Species Using Chromatography‐Based Methods

open access: yesChemistry &Biodiversity, Volume 23, Issue 6, June 2026.
Comprehensive chromatographic and chemometric profiling of five medicinal South African Bulbine species across leaves, rhizomes, and roots reveals 73 metabolites, including species‐specific phenylanthraquinones, flavonoids, and anthocyanins, that serve as reliable chemical markers for species authentication.
Ramoagi T. Segone   +7 more
wiley   +1 more source

Ketoprofen Recognition and Sensing by Zn(II) Complexes with Fluorogenic Triamine Receptors. [PDF]

open access: yesMolecules
Simonini Steiner YT   +9 more
europepmc   +1 more source

Tar Removal From Biomass‐Derived Syngas via Scrubbing: A Review on Process and Modeling

open access: yesChemBioEng Reviews, Volume 13, Issue 3, June 2026.
This review article surveys contaminant formation and removal in biomass‐derived syngas, with a focus on tar scrubbing. It synthesizes evidence from benchmark plants and compares scrubbing configurations and solvents to assess performance and operating limits.
Simon Brinkmann   +2 more
wiley   +1 more source

Push–Pull Phenazine Fluorophores: Substituent‐Position Effects on Emission and Intermolecular Organization Modulated by Hydrogen Bonding and Molecular Symmetry

open access: yesChemistryEurope, Volume 4, Issue 6, June 2026.
Push–pull substitution activates fluorescence in the weakly emissive phenazine scaffold, producing photostable green‐to‐red emitters via a one‐step annulation. A systematic comparison of positional isomers reveals that the Etter‐rule‐directed hydrogen‐bonding patterns modulate the emission wavelength and crystal packing, while the molecular symmetry ...
Hiroki Sato   +7 more
wiley   +1 more source

Photophysics of a Tetraazaperylene Ligand and Its Heteroleptic Cu(I) Complex

open access: yesChemPhotoChem, Volume 10, Issue 6, June 2026.
π‐Extension with the tape ligand strongly red‐shifts the metal‐to‐ligand charge transfer transition of Cu(I) diimine‐diphosphine complexes far into the visible, enabling one of the most bathochromic absorptions reported for this class. The synthesis and characterization of Cutape, a heteroleptic Cu(I) complex featuring a π‐extended tetraazaperylene ...
Johannes P. Zurwellen   +10 more
wiley   +1 more source

How Alkali Metal Alkoxides Initiate Organic Radical Reactions. [PDF]

open access: yesJ Am Chem Soc
Tyerman S   +9 more
europepmc   +1 more source

Assessment of Doxorubicin Internalization and Cytotoxicity in Primary Tumor Spheroids After Collagen Digestion

open access: yesCurrent Protocols, Volume 6, Issue 6, June 2026.
Abstract The limited penetration of chemotherapeutic agents into solid tumors remains a major obstacle to effective cancer treatment and is strongly influenced by the extracellular matrix (ECM). Three‐dimensional (3D) tumor spheroids derived from primary tumor cells (PTCs) represent a valuable in vitro model to study how ECM composition and ...
Alessandra Lo Cicero   +3 more
wiley   +1 more source

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