Results 71 to 80 of about 32,676 (309)

Strain‐Activated Photo‐Dehalogenation Unlocks Low‐Energy One and Two‐Photon 3D Microfabrication

Advanced Functional Materials, EarlyView.
5,14‐NMI‐Cz acts, conversely to its 7,10‐NMI‐Cz(7,10‐'dibromo‐2‐(2,6‐diisopropylphenyl)‐1H‐benzo[lmn]carbazolo[9,1‐bc][2,8]phenanthroline‐1,3(2H)‐dione) counterpart, as modular photoinitiator with panchromatic photoactivity, featuring a weak C–Br bond from geometric strain for efficient Type I & II initiation. These studies demonstrate applicability of
Kacper Piskorz, Katarzyna Starzak, Malgorzata Noworyta, Konrad Cyprych, Krzysztof Bartkowski, Zahra Badri, Sukhvinder Dhiman, Cina Foroutan‐Nejad, Jaroslaw Mysliwiec, Marcin Lindner, Joanna Ortyl   +10 more
wiley   +1 more source

A New Ergosterol Analog, a New Bis-Anthraquinone and Anti-Obesity Activity of Anthraquinones from the Marine Sponge-Associated Fungus Talaromyces stipitatus KUFA 0207

Marine Drugs, 2017
A new ergosterol analog, talarosterone (1) and a new bis-anthraquinone derivative (3) were isolated, together with ten known compounds including palmitic acid, ergosta-4,6,8(14),22-tetraen-3-one, ergosterol-5,8-endoperoxide, cyathisterone (2), emodin (4a)
Jidapa Noinart, Suradet Buttachon, Tida Dethoup, Luís Gales, José A. Pereira, Ralph Urbatzka, Sara Freitas, Michael Lee, Artur M. S. Silva, Madalena M. M. Pinto, Vítor Vasconcelos, Anake Kijjoa   +11 more
doaj   +1 more source

Effects of Anthraquinones on Immune Responses and Inflammatory Diseases

Molecules, 2022
The anthraquinones (AQs) and derivatives are widely distributed in nature, including plants, fungi, and insects, with effects of anti-inflammation and anti-oxidation, antibacterial and antiviral, anti-osteoporosis, anti-tumor, etc.
Dandan Xin, Huhu Li, Shiyue Zhou, Hao Zhong, Weiling Pu   +4 more
doaj   +1 more source

Development and validation of HPLC-PDA assay method of frangula emodin [PDF]

, 2016
Frangula emodin, (1,3,8-trihydroxy-6-methyl-anthraquinone), is one of the anthraquinone derivatives found abundantly in the roots and bark of a number of plant families traditionally used to treat constipation and haemorrhoids.
Duca, Deborah, Farrugia, Claude
core   +2 more sources

Harmonizing the Pyrene and Ether Groups in Covalent Triazine Polymers for Highly Effective H2O2 Photosynthesis via One‐Step Two‐Electron Oxygen Reduction

Advanced Functional Materials, EarlyView.
The pyrene and ether groups are incorporated into the covalent triazine polymer (CTP) structure. The synergistic effect of the two functional groups endows CTP with better electron transfer, light absorption, and oxygen activation properties. An impressive apparent quantum yield (13.2% @420 nm) and a remarkable solar‐to‐chemical conversion efficiency ...
Chong Wang, Jinliang Lv, Yichun Lu, Hanfeng Ye, Xuan Zhang, Leonardo Cancellara, Nadezda Tarakina, Jiande Lin, Xin Gao, Oleksandr Savateev, Jiajia Cheng   +10 more
wiley   +1 more source

Non‐Statistical Assembly of Donor–Acceptor Cages for Light‐Induced Charge Separation

Angewandte Chemie, EarlyView.
Donor–acceptor functionalized cages [Pd2D2A2]4+ with defined stoichiometry and stereoconfiguration were assembled in a single step by employing the shape complementary assembly (SCA) strategy. While the redox functionalities remain largely independent in the ground state, photoexcitation results in ultrafast ligand‐to‐ligand charge transfer, as ...
Jacopo Tessarolo, Laura Neukirch, Kai Wu, Jan‐Hendrik Borter, Haeri Lee, Dirk Schwarzer, Guido H. Clever   +6 more
wiley   +2 more sources

Cyanide and fluoride colorimetric sensing by novel imidazo-anthraquinones functionalized with indole and carbazole [PDF]

, 2014
Novel imidazo-anthraquinones functionalized with indole and carbazole have been synthesised and characterised and their evaluation as colorimetric chemosensors was carried out in acetonitrile as well as in acetonitrile/H2O (97:3) in the presence of ...
Carlos Lodeiro, Elisabete Oliveira, M. Manuela M. Raposo, Rosa M.F. Batista, Susana P.G. Costa, Thomsen V.   +5 more
core   +1 more source

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

Hidden Diradical: Conformational Switch for Solvatochromic NIR Emission With Unity Quantum Yield in Thiele's Hydrocarbon

Angewandte Chemie, EarlyView.
Halogen substitution controls a conformational switch between a folded closed‐shell and a flat singlet‐diradical conformer in an air‐stable Thiele‐diradical. This conformational switch allows for near‐unity photoluminescence quantum yield with a large Stokes shift, solvatochromism, and a long‐lived excited state.
Matteo Bevilacqua, Mattia Reato, Federico Cilento, Claudia Graiff, Sabrina Antonello, Luca Schio, Alessandro Aliprandi, Cristina Tubaro, Lorenzo Franco, Martina Dell'Angela, Dominik Munz, Marco Baron   +11 more
wiley   +2 more sources

Secondary Metabolites from the Genus Eurotium and Their Biological Activities

Foods, 2023
Eurotium is the teleomorph genus associated with the section Aspergillus. Eurotium comprises approximately 20 species, which are widely distributed in nature and human environments.
Jiantianye Deng, Yilong Li, Yong Yuan, Feiyan Yin, Jin Chao, Jianan Huang, Zhonghua Liu, Kunbo Wang, Mingzhi Zhu   +8 more
doaj   +1 more source