Results 61 to 70 of about 140,323 (303)
Charge transfer tuning in TiO2 hybrid nanostructures with acceptor-acceptor systems
, 2017 An interesting interplay between two different modifiers and the surface of titanium dioxide leads to a significant change in photoelectrochemical properties of the designed hybrid materials.
Barszcz, B. +8 more
core +1 more source
Total synthesis of aurofusarin: studies on the atropisomeric stability of bis-naphthoquinones [PDF]
, 2018 An efficient annulation involving pyrone addition to a quinone and Dieckmann condensation was developed for rapid assembly of a γ-naphthopyrone monomeric precursor to the bis-naphthoquinone natural product aurofusarin.
Allen +42 more
core +1 more source
An Edible H2O2 Biosensor for Gastrointestinal Metabolites and Peroxidase Enzyme Quantification
Advanced Healthcare Materials, EarlyView.We present an edible biosensor for gastric fluid analysis that integrates a caffeic acid–horseradish peroxidase redox system into an edible electrolyte‐gated transistor. The device enables rapid, low‐volume detection of H2O2 and, with minimal modification, metabolites and enzyme activity in simulated gastrointestinal conditions.
Valerio Francesco Annese +10 more
wiley +1 more source
PhotochemPhotosynthesis in plants and the electron transport chain in mitochondria are examples of life-sustaining electron transfer processes. The benzoquinones plastoquinone and ubiquinone are key components of these pathways that cycle through their oxidized ...
Meredith G. Warsen +3 more
doaj +1 more source
Cytotoxic Compounds from Aloe megalacantha
Molecules, 2017 Phytochemical investigation of the ethyl acetate extract of the roots of Aloe megalacantha led to the isolation of four new natural products—1,8-dimethoxynepodinol (1), aloesaponarin III (2), 10-O-methylchrysalodin (3) and methyl-26-O-feruloyl ...
Negera Abdissa +3 more
doaj +1 more source
Synthesis and Antimalarial Activities of New Hybrid Atokel Molecules
ChemistryOpen, 2022 The currently spreading resistance of the malaria parasite Plasmodium falciparum to artemisinin‐based combination therapies makes an urgent need for new efficient drugs.
Youzhi Li +8 more
doaj +1 more source
Quinone and non-quinone redox couples in Complex III [PDF]
Journal of Bioenergetics and Biomembranes, 2008 The Q cycle mechanism proposed by Peter Mitchell in the 1970's explicitly considered the modification of ubiquinone two-electron redox properties upon binding to Complex III to match the thermodynamics of the other single-electron redox cofactors in the complex, and guide electron transfer to support the generation of a proton electro-chemical gradient
Zhang, Haibo +5 more
openaire +3 more sources
Organocatalytic synthesis of axially chiral atropisomers [PDF]
, 2017 This review summarises the recent progress made in the organocatalytic synthesis of atropisomeric compounds. Methodologies based on dynamic kinetic resolution and direct access to BINOL-like biaryls are described.
Renzi, P.
core +1 more source
Advanced Materials, EarlyView.Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu +3 more
wiley +1 more source
Synthesis of isopropyl-substituted anthraquinones via Friedel–Crafts acylations: migration of isopropyl groups [PDF]
Royal Society Open Science, 2017 Friedel–Crafts reactions of isopropyl-substituted benzenes with phthalic anhydride in the presence of aluminium trichloride, followed by cyclization of the products with strong sulfuric acid give, as expected, anthraquinones.
Abdel B. Chakiri, Philip Hodge
doaj +1 more source