Results 51 to 60 of about 29,605 (298)

An anthraquinone-based oxime ester as a visible-light photoinitiator for 3D photoprinting applications

, 2023
International audienceAn anthraquinone-based oxime ester photoinitiating system as a new Type I photoinitiator for 3D photoprinting under LEDs@405 nm ...
Elian, Christine, Sanosa, Nil, Herrero, Christian, Sampedro, Diego, Bogliotti, Nicolas, Sampedro, Diego [0000-0003-2772-6453], Sanosa, Nil [0000-0002-9314-0824], Versace, Davy-Louis   +7 more
core   +1 more source

Electron‐Deficient Linkers Enhance H2O2 Electrosynthesis in Covalent Organic Frameworks

Advanced Functional Materials, EarlyView.
Linker π‐conjugation modulates the electronic state of the Ni–N4 centers and their interaction with the key *OOH intermediate while preserving the primary coordination motif. NiPc‐PTDA delivers an H2O2 selectivity of 92% and a production rate of 34.8 mol gcat−1 h−1, highlighting linker electronic properties as a molecular design parameter for NiPc ...
Houting Xie, Rui Guo, Zhen Liu, Yang Hu, Laichun Zhao, Omid Mazaheri, Bufeng Zhang, Shuaijun Pan   +7 more
wiley   +1 more source

Decouple H2O2 Electrosynthesis From Microenvironmental Decomposition via Atomic Site Density Engineering

Angewandte Chemie, EarlyView.
Using defect‐rich Co‐N2O2 single‐atom catalysts as a model system, this work reveals that atomic site density governs the competition between H2O2 electrosynthesis and microenvironmental decomposition during 2e−‐ORR. Optimised site isolation suppresses HPRR and HDR, thereby establishing a site‐density principle to balance H2O2 formation and ...
Junwen Chen, Hongyu Zhou, Qiming Zhang, Shuang Zhong, Wei Ren, Lei Shi, Li Gao, Shaobin Wang, Xiaoguang Duan   +8 more
wiley   +2 more sources

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

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, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source

Biophysical Characterization of the Binding of Homologous Anthraquinone Amides to DNA

, 2013
The synthesis of four homologous anthraquinones (AQ I-IV) bearing increasing lengths of polyethylene glycol (PEG) side chains and their binding to AT- and GC-rich DNA hairpins are reported.
Jackson Beckford, Shirlene R
core   +1 more source

Atomically Correlated Phosphorus–Sulfur Sites in Carbon Nitride for Efficient Hydrogen Peroxide Production

Advanced Science, EarlyView.
Atomically correlated phosphorus–sulphur sites are introduced into graphitic carbon nitride to regulate charge distribution, suppress localized trapping, and enhance oxygen activation. The resulting metal‐free photocatalyst selectively promotes the two‐electron oxygen reduction pathway, enabling efficient hydrogen peroxide production in pure water ...
Adnan Ahmad, Gbemi F. Abass, Myat Thwe Naing, Cheng Yang, Denny Gunawan, Hetaishan Huang, Qingfeng Zhai, Teng Lu, Nick Cox, Liming Dai, Rose Amal, Terry J. Frankcombe, Yun Liu   +12 more
wiley   +1 more source

Chlorine-Free Depolymerization of Commercial PMMA via Oxygen-Centered Radicals. [PDF]

Angew Chem Int Ed Engl
A new chlorine‐free photothermal method enables sustainable recycling of plastics with C–C backbones under mild conditions. Driven by an oxygen‐centered radical pathway with ppm levels of anthraquinone catalyst, it eliminates hazardous chlorinated solvents, achieving an impressive 97% depolymerization conversion.
Lin CY, Andreou S, De Alwis Watuthanthrige N, Wang HS, Antonopoulou MN, Anastasaki A.   +5 more
europepmc   +3 more sources

Novel Tricarbonylrhenium-Anthrapyrazole Complexes with DNA-Binding and Antitumor Properties: In Vitro and In Vivo Pharmacokinetic Studies with ^99mTc-Analogue

Inorganics
Organometallic complexes of fac-tricarbonylrhenium have been shown to exhibit anticancer properties. Anthrapyrazole anticancer agents act as DNA intercalators and topoisomerase IIα inhibitors, leading to double-strand breaks (DBS) and cell cycle arrest ...
Georgios Paparidis, Melpomeni Akrivou, George Psomas, Ioannis S. Vizirianakis, Antonios Hatzidimitriou, Catherine Gabriel, Dimosthenis Sarigiannis, Dionysia Papagiannopoulou   +7 more
doaj   +1 more source

Safety of cassia gum as a feed additive for cats and dogs based on a dossier submitted by Glycomer GmbH

EFSA Journal, 2019
The additive cassia gum consists mainly of high‐molecular weight polysaccharides composed primarily of a linear chain of 1,4‐β‐d‐mannopyranose units with 1,6‐linked α‐d‐galactopyranose units.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Vasileios Bampidis, Giovanna Azimonti, Maria de Lourdes Bastos, Henrik Christensen, Birgit Dusemund, Maryline Kouba, Mojca Kos Durjava, Marta López‐Alonso, Secundino López Puente, Francesca Marcon, Baltasar Mayo, Alena Pechová, Mariana Petkova, Fernando Ramos, Yolanda Sanz, Roberto Edoardo Villa, Ruud Woutersen, Gabriele Aquilina, Georges Bories, Andrew Chesson, Carlo Nebbia, Derek Renshaw, Matteo Lorenzo Innocenti, Jürgen Gropp   +24 more
doaj   +1 more source

Anthraquinone Emodin Inhibits Tumor Necrosis Factor Alpha-Induced Calcification of Human Aortic Valve Interstitial Cells via the NF-κB Pathway

Frontiers in Pharmacology, 2018
Exploring effective therapies for delaying calcific heart valve disease (CHVD) is the focus of current cardiovascular clinical and scientific research.
Kang Xu, Tingwen Zhou, Yuming Huang, Qingjia Chi, Jiawei Shi, Peng Zhu, Nianguo Dong   +6 more
doaj   +1 more source