Results 81 to 90 of about 40,476 (314)

Nitrogen‐Centered Organic Persistent Radicals Catalyze Redox‐Neutral C─C Bond Forming Reactions

Angewandte Chemie, EarlyView.
Kuhn verdazyls, discovered over 60 years ago, are shown as effective catalysts for the first time. Their tunable redox properties enable organocatalytic redox‐neutral C─H arylation and C─H trifluoromethylation reactions without light activation.
Shrouq Mujahed, Jaysan Janabel, Kundan Shaw, Roberta Cagliani, Tynchtyk Amatov   +4 more
wiley   +2 more sources

One-pot hydrogen peroxide and hydrohalic acid induced ring closure and selective aromatic halogenation to give new ring-fused benzimidazoles [PDF]

, 2015
A new series of selectively dichlorinated and dibrominated five to eight-membered ring [1,2-a] fused benzimidazoles and [1,4]oxazino[4,3-a]benzimidazoles are synthesized in mostly high yields of >80% using the reaction of hydrogen peroxide and hydrohalic
Andrzejewska M., Bahrami K., Barhate N. B., Barhate N. B., Ben-Daniel R., Bogdal D., Borowski P., Carpenter R. D., Dakka J., De Rosa M., Fagan V., Fahey K., Fawaz Aldabbagh, Gobis K., Koini E. N., Kuznetsov Y. V., Martin J., Martin Sweeney, Michael Gurry, Nair M. D., Patrick McArdle, Sivey J. D., Sivey J. D., Voudrias E. A., Šukalović V.   +24 more
core   +3 more sources

Determination of the Kinetic Rates and Intrinsic Nonradiative Losses in Organic Thermally Activated Delayed Fluorescence Emitters

Advanced Science, EarlyView.
It is demonstrated that the kinetic rates and intrinsic nonradiative losses of purely organic emitters with thermally activated delayed fluorescence cannot be precisely determined by photoluminescent measurements alone. With device modeling, it is then possible to quantify the absolute nonradiative losses from singlets and triplets, and therefore the ...
Xin Zhou, Jawid Nikan, Kaiwen Guo, Paul W. M. Blom, Gert‐Jan A. H. Wetzelaer, Yungui Li   +5 more
wiley   +1 more source

Isotope Engineering of Tetraphenylethylene: Aggregate‐Dependent Enhancement of Luminescence Efficiency

Angewandte Chemie, EarlyView.
In loosely packed nanoaggregates, increased deuteration enhances photoluminescence quantum yields (PLQY) and extends the fluorescence lifetimes of tetraphenylethylene (TPE) by reducing internal conversion rates. Conversely, in tightly packed crystalline states, deuteration leads to decreased PLQY and shortened lifetimes, attributable to the Duschinsky ...
Siwei Zhang, Fulong Ma, Jinhui Jiang, Bo Wu, Junyi Gong, Guang Xu, Chao Li, Tengteng Chen, Ryan T. K. Kwok, Jacky W. Y. Lam, Zheng Zhao, Ben Zhong Tang   +11 more
wiley   +2 more sources

Genotoxic mixtures and dissimilar action: Concepts for prediction and assessment [PDF]

, 2013
This article has been made available through the Brunel Open Access Publishing Fund. This article is distributed under the terms of the creative commons Attribution license which permits any use, distribution, and reproduction in any medium, provided ...
A Bouslimi, A Elhajouji, Andreas Kortenkamp, AY Kocaman, CI Bliss, D Kirkland, E Hecker, K Drescher, K Hashimoto, K Hashimoto, M Faust, M Fenech, M Honma, M Marinovich, M Scholze, Martin Scholze, MC Berenbaum, MC Berenbaum, National Research Council, P Fowler, R Altenburger, S Ermler, S Loewe, Sibylle Ermler, T Backhaus, T Mosmann, W Slob, WK Lutz, WK Lutz, WK Lutz   +29 more
core   +2 more sources

Ion‐Pair Interactions in Polyphenylene‐Based Quaternized Membranes Designed for Phosphoric Acid‐Doped Proton Exchange Membranes for High‐Temperature Fuel Cells

Advanced Science, EarlyView.
Quaternized polyphenylene‐based membranes with tailored hydrophobic groups (C7‐QAF and BAF‐QAF) exhibit high phosphoric acid uptake, acid retention, proton conductivity, and stability. Their well‐developed microphase‐separated structures and robust ion‐pair interactions enable superior fuel cell performance at 140 and 160 °C without humidification ...
Lin Guo, Kenji Miyatake, Ahmed Mohamed Ahmed Mahmoud, Fanghua Liu, Fang Xian, Vikrant Yadav, Xiaofeng Hao, Shuanjin Wang, Yuezhong Meng   +8 more
wiley   +1 more source

Bandgap‐Dependent Doping of Semiconducting Carbon Nanotube Networks by Proton‐Coupled Electron Transfer for Stable Thermoelectrics

Advanced Electronic Materials, EarlyView.
Proton‐coupled electron transfer doping with benzoquinone is applied to p‐dope dense films of semiconducting single‐walled carbon nanotubes. The doping efficiency depends on the pH of the doping solution and the bandgap of the nanotubes. The highest conductivities and power factors are achieved for small‐bandgap nanotubes, remaining stable for over 120
Angus Hawkey, Xabier Rodríguez‐Martínez, Sebastian Lindenthal, Moritz C. F. Jansen, Reverant Crispin, Jana Zaumseil   +5 more
wiley   +1 more source

Anthelmintic resistance of gastrointestinal cattle nematodes [PDF]

, 2013
Anthelmintic resistance of parasites in small ruminants, cattle and horses is increasing worldwide as a consequence of the over usage of the currently available products.
Claerebout, Edwin, De Graef, Jessie, Geldhof, Peter   +2 more
core  

Chemical composition and antifungal effects of three species of Satureja (S. hortensis, S. spicigera, and S. khuzistanica) essential oils on the main pathogens of strawberry fruit [PDF]

, 2015
Due to an increasing risk of chemical contamination upon the application of synthetic fungicides to preserve fresh fruits and vegetables, essential oils are gaining increasing attentions.
Farzaneh, M., Hadian, J., Kiani, H., Reisi, M., Sharifi, R.   +4 more
core   +1 more source

Deep Blue Fluorescent OLEDs Based on a Solution and Solid‐State Emitter (SSSE): Investigations with 2‐Phenyl‐Naphthoxazole

Advanced Electronic Materials, EarlyView.
The blue fluorescent molecule 2‐phenyl‐naphth[2,3‐d]oxazole (Nzx) exhibits strong emission in both solution and solid states. Such behavior, referred to as solution and solid‐state emission (SSSE), makes Nzx a promising candidate for optoelectronic applications. This study highlights the potential of Nzx for the development of stable and efficient near
Houssein El Housseiny, Suzanne Fery‐Forgues, Marc Ternisien, David Buso, Georges Zissis, Cédric Renaud   +5 more
wiley   +1 more source