Results 131 to 140 of about 1,362,496 (337)

Role of Histidine‐Containing Peptoids in Accelerating the Kinetics of Calcite Growth

Advanced Functional Materials, EarlyView.
Amphiphilic histidine‐containing peptoids mimic carbonic anhydrase (CA) to accelerate calcite step growth. In the presence of Zn2+, they promote the deprotonation of HCO3−, the desolvation of Ca2+, and the reorganization of interfacial hydration layers, thereby reducing the activation barrier for calcite growth.
Mingyi Zhang, Ying Chen, Chenyang Shi, Progyateg Chakma, James J. De Yoreo, Chun‐Long Chen   +5 more
wiley   +1 more source

Discovery and Structural Characterization of Impurities in the Synthesis of Darolutamide Intermediate

Chinese Journal of Magnetic Resonance
Darolutamide is an important drug for the treatment of prostate cancer. When studying its synthesis process, three impurities A, B, and C were discovered and purified in the first step of Suzuki coupling and the second step of hydrolysis deprotection ...
MA Huifang, TONG Yue, WANG Rongfan, XIE Jianwei   +3 more
doaj   +1 more source

5-Chloro-4-iodo-1,3-dimethyl-1H-pyrazole

Molbank, 2009
Reaction of 5-chloro-1,3-dimethyl-1H-pyrazole with I2/HIO3 in refluxing acetic acid gives the title compound in good yield. Detailed spectroscopic data (1H NMR, 13C NMR, 15N NMR, IR, MS) are presented.
Gytė Vilkauskaitė, Gernot A. Eller, Algirdas Šačkus, Wolfgang Holzer   +3 more
doaj   +1 more source

Enhanced Nitric Oxide Electroreduction to Ammonia via Modulating Spin‐Polarization of Fe Single‐Atom Catalysts

Advanced Functional Materials, EarlyView.
A strategic spin‐polarization suppression in Fe single‐atom catalysts is proposed to enhance electrocatalytic reduction of NO to NH3. Employing a top‐down electrospinning strategy, self‐supported FeSAC with Fe‐N3S1 coordination structure and spin‐state transition is engineered from high‐spin to low‐spin.
Jialing Song, Ziqi Wei, Lupeng Han, Zhenlin Wang, Chenghao Fan, Donglin Han, Chunwei Dong, Haiyan Duan, Xiyang Wang, Sam Fong Yau Li, Eslam Hamed, Ming Xie, Emiliano Cortés, Dengsong Zhang   +13 more
wiley   +1 more source

Chiral Nanohoops as an Efficient Spin Polarization System

Advanced Functional Materials, EarlyView.
Chiral conjugated nanohoops with a central dibenzopentalene unit exhibit 90% spin polarization at low voltage and high conductivity. These properties make them ideal components in molecular spintronics applications. Abstract A central challenge in molecular spintronics is to achieve a high spin polarization at low operating voltages and ambient ...
Anu Gupta, Philipp Seitz, Mathias Hermann, Birgit Esser, Ron Naaman   +4 more
wiley   +1 more source

Comparison of 19F and 1H NMR spectroscopy with conventional methods for the detection of extra virgin olive oil adulteration

Grasas y Aceites, 2018
This paper reports the comparison of determination methods for extra virgin olive oil (EVOO) adulteration with two kinds of oils, refined olive oil (ROO) and soybean oil by 19FNMR, 1H NMR and chemical titration.
X. Y. Jiang, C. Li, Q. Q. Chen, X. C. Weng   +3 more
doaj   +1 more source

1H NMR study of lithium d-lactate

Solid State Nuclear Magnetic Resonance, 1992
Polycrystalline D-lactic acid lithium salt [(R)-2-hydroxypropanoic acid lithium salt, lithium D-lactate] has been investigated by pulsed proton magnetic resonance methods between 77 and 300 K at 25 MHz. The main relaxation mechanism is methyl rotation; the motion is characterized by an activation energy Ea = 14.5 +/- 0.5 kJ/mol and time factor tau 0 = (
Departments of Physics and Radiology, University of Florida, Gainesville, FL 32611, USA ( host institution ), Buszko, M.L. ( author ), Andrew, E.R. ( author )   +2 more
openaire   +3 more sources

Ionic‐Electronic Hydrogel‐Liquid Metal Composite Bilayer with Tissue‐Adaptive and Adhesive Properties for Closed‐Loop Neuroprosthetic System

Advanced Functional Materials, EarlyView.
A hydrogel–liquid metal composite peripheral nerve interface (HLB‐PNI) combines electrically durable electrodes and tissue‐adhesive hydrogel for tissue‐adaptive implantation. In nerve‐injured rats, it enables the diagnosis of sensory‐motor connectivity via stimulation and neural signal recording.
Yewon Kim, Kyoungryong Kim, Jaehyon Kim, Heewon Choi, Mikyung Shin, Donghee Son   +5 more
wiley   +1 more source

Charge Transport in Ternary Charge‐Transfer Solid Solution Single Crystals

Advanced Functional Materials, EarlyView.
This study deconvolutes the roles of indirect (superexchange) and direct electronic coupling on charge transport in single crystals of an organic charge‐transfer molecular semiconductor (OSC). This model system elegantly demonstrates that structural defects introduced by chemical dopants play a significant role in the electronic performance ...
Jonathan C. Novak, Manikanta Makala, Edith L. MacKenzie, Veaceslav Coropceanu, Kimberly Agosto, Abigail A. Moravek, Oana D. Jurchescu, Ren A. Wiscons   +7 more
wiley   +1 more source

Spectral Analysis and Structural Elucidation of Besifloxacin Hydrochloride

Chinese Journal of Magnetic Resonance, 2018
The ultraviolet spectra (UV), infrared spectra (IR), mass spectra (MS) and nuclear magnetic resonance (NMR) spectra (i.e., 1H NMR, 13C NMR, DEPT, HSQC, HMBC, COSY and NOESY) of besifloxacin hydrochloride were acquired and interpreted.
ZHANG Ming-guang, FENG Xiao-hu, YU Shui-tao, JI Xiao-long, CHEN Zai-xin   +4 more
doaj   +1 more source