Results 81 to 90 of about 43,175 (307)

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

Advanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich, Paul Markus, Matthias Stöter, Bernhard Biersack, Rainer Schobert, Josef Breu, Georg Papastavrou   +6 more
wiley   +1 more source

Synthetic chemistry and biological activity of pentafluorosulphanyl (SF5) organic molecules [PDF]

, 2012
Acknowledgements We thank the European Commission for financial support (Industry Academia Partnerships and Pathways project “PET BRAIN”, Contract No 251482). S.A.
Altomonte, Stefano, Zanda, Matteo
core   +1 more source

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

SI‐bioATRP in Mesoporous Silica for Size‐Exclusion Driven Local Polymer Placement

Advanced Functional Materials, EarlyView.
An enzyme‐catalyzed surface‐initiated atom transfer radical polymerization (SI‐bioATRP) of an anionic monomer within mesoporous silica particles, using hemoglobin as a catalyst, allows for controlling the location of the formed polymer via size‐exclusion effects between the nanopores and the biomacromolecules, thereby opening routes to functional ...
Oleksandr Wondra, Eleonora Ornati, Robert Lehn, Joanna J. Mikolei, Hergen Breitzke, Raheleh Pardehkhorram, Gerd Buntkowsky, Nico Bruns, Annette Andrieu‐Brunsen   +8 more
wiley   +1 more source

Enantioselective Alkylation of Hydrophobic Vitamin B12 Bearing a Binaphthyl Moiety [PDF]

, 1992
The enantioselective alkylation of hydrophobia vitamin B12 derivatives at the β-axial site was examined in methanol with various alkyl bromides, and those B12 analogues bearing a peripheral binaphthyl moiety showed the highest S-selectivity toward ...
Hisaeda Yoshio, Kohno Hiroshi, Murakami Yukito, Ohno Teruhisa   +3 more
core   +2 more sources

Ionic Liquid-Mediated, Rapid N-Alkylation of Heterocyclic Compounds with Trialkyl Phosphites in the Presence of Dialkyl Acetylenedicarboxylates

E-Journal of Chemistry, 2012
Ionic liquids such as 1,3-dialkylimidazolium bromides and make excellent solvents for N-alkylation of heterocyclic compounds such as saccharin and rhodanine with trialkyl phosphites in the presence of dialkyl acetylenedicarboxylates.
Alireza Hassanabadi, Mohammad H. Mosslemin, Mohammad Anary-Abbasinejad, Azadeh Kalantarinejad, Mozhdeh Jerjisi Shirazi   +4 more
doaj   +1 more source

Migratory functionalization of unactivated alkyl bromides for construction of all-carbon quaternary centers via transposed tert-C-radicals

Nature Communications, 2020
Formation of tertiary C(sp3)-C bonds is a formidable challenge due to steric interactions and low barriers for isomerization of intermediates. Here, the authors show a Ni-catalyzed migratory 3,3-difluoroallylation of unactivated alkyl bromides at remote ...
Chuan Zhu, Ze-Yao Liu, Luning Tang, Heng Zhang, Yu-Feng Zhang, Patrick J. Walsh, Chao Feng   +6 more
doaj   +1 more source

Shaping Ti3C2 MXene Nanospheres for Precision Near‐Infrared Photothermal Therapy

Advanced Functional Materials, EarlyView.
In this study, we report producing spherical MXenes via fs laser fragmentation of Ti3C2 flakes in liquid medium. The nanoparticles demonstrated pronounced light absorption and high photothermal conversion efficiencies of 68% and 63% under heating with NIR‐I and NIR‐II lasers, respectively.
Julia S. Babkova, Ivan V. Zelepukin, Konstantin G. Shevchenko, Gleb V. Tikhonowski, Lyubov V. Gorelik, Anton A. Popov, Anna S. Sogomonyan, Alina Yu. Kapitannikova, Ivan S. Kazantsev, Dmitry V. Dyubo, Daria A. Panova, Daniil I. Tselikov, Anton A. Minnekhanov, Aziz B. Mirkasymov, Georgy A. Ermolaev, Alexander V. Syuy, Gleb I. Tselikov, Aleksey V. Arsenin, Andrei V. Kabashin, Kostya S. Novoselov, Sergey M. Deyev, Valentyn S. Volkov   +21 more
wiley   +1 more source

Heavy anion solvation of polarity fluctuations in Pnictides [PDF]

, 2008
Once again the condensed matter world has been surprised by the discovery of yet another class of high temperature superconductors. The discovery of iron-pnictide (FeAs) and chalcogenide (FeSe) based superconductors with a $T_c$ of up to 55 K is again ...
Berciu M., Blaha P., Chen G. F., G. A. Sawatzky, Ginzburg V. L., Ginzburg V. L., Haas C., Haule K., Hsu F.-C., Huang Q., I. S. Elfimov, J. van den Brink, J. Zaanen, Klingeler R., Ma F., Ma F. et al, Qiu Y., Qiu Y., Ren Z.-A., Ren Z.-A., Sefat A. S., Tapp J. H., Tegel M., Wen H.-H., Wilson M., Xu G.   +25 more
core   +2 more sources

2-Cyanoanilinium bromide [PDF]

Acta Crystallographica Section E Structure Reports Online, 2009
In the cation of the title compound, C(7)H(7)N(2) (+)·Br(-), the nitrile group and the benzene ring are almost coplanar (r.m.s. deviation = 0.0043 Å). In the crystal, the cations and anions are connected by inter-molecular N-H⋯Br hydrogen bonds, forming a two-dimensional network parallel to (010).
openaire   +3 more sources