Results 61 to 70 of about 494,170 (294)

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Influence of OH- concentration on the illitization of kaolinite at high pressure [PDF]

, 2011
The products of hydrothermal reactions of kaolinite at 300°C and 1000 bars were studied in KOH solutions covering an OH- concentration, [OH-], of 1M to 3.5M. XRD patterns indicated a notable influence of the [OH-] on the reaction.
Becerro Nieto, Ana Isabel, Escudero, A., Mantovani, Marco   +2 more
core   +1 more source

Spectral Analyses of a Novel Ibuprofen-Phillygenin Ester

Chinese Journal of Magnetic Resonance, 2018
An ibuprofen-phillygenin ester was synthesized through the Schotten-Baumann reaction with ibuprofen and phillygenin as the starting materials. Ultraviolet absorption (UV) spectrum, infrared absorption (IR) spectrum, matrix-assisted laser desorption ...
FAN Hong-yu
doaj   +1 more source

Emergent Spin‐Glass Behavior in an Iron(II)‐Based Metal–Organic Framework Glass

Advanced Functional Materials, EarlyView.
A one‐pot, solvent‐free synthesis yields an Fe2+‐based metal‐organic framework (MOF) glass featuring a continuous random network structure. The material exhibits spin‐glass freezing at 14 K, driven by topological‐disorder and short‐range magnetic frustration, showcasing the potential of MOF glasses as a plattform for cooperative magnetic phenomena in ...
Chinmoy Das, Soma Salamon, Joachim Landers, Jan‐Benedikt Weiß, Wen‐Long Xue, Pascal Kolodzeiski, Roman Pallach, Heiko Wende, Sebastian Henke   +8 more
wiley   +1 more source

Ion and polymer dynamics in polymer electrolytes PPO-LiClO4: insights from NMR line-shape analysis

, 2006
We investigate ion and polymer dynamics in polymer electrolytes PPO-LiClO4 performing 2H and 7Li NMR line-shape analysis. Comparison of temperature dependent 7Li and 2H NMR spectra gives evidence for a coupling of ion and polymer dynamics. 2H NMR spectra
Thorbrugge, T., Vogel, M.
core   +1 more source

Simultaneous aluminum, silicon, and sodium coordination changes in 6 GPa sodium aluminosilicate glasses [PDF]

, 2009
We present the first direct observation of high-coordinated Si and Al occurring together in a series of high-pressure sodium aluminosilicate glasses, quenched from melts at 6 GPa.
Asimow, Paul D., Kelsey, Kimberly E., Mosenfelder, Jed L., Stebbins, Jonathan F.   +3 more
core   +1 more source

The NMR Spectra of Alkylbenzene

The Journal of the Society of Chemical Industry, Japan, 1967
23種類のモノアルキルベンゼンのNMRスペクトルから,プロトンのいろいろの型による化学シフトを測定した。側鎖アルキル基のα,β,γ位の炭素についているプロトンの化学シフトは,ベンゼン環の環電流によって顧著な影響を受け,αとβのプロトンは低磁場の方向に,γのプロトンは高磁場の方向にシフトする。これらの化学シフトの範囲を,側鎖アルキル基のプロトンの型および位置について詳細に決定した。その結果,ベンゼン環に近いところに枝分かれしたアルキル基があると,化学シフトに対する環電流の影響はより強くなることが認められた。これらのデーターを組合わせると,アルキルベンゼンの側鎖の詳細な構造について多くの情報を提供するであろう。
Kazuyoshi ITOH, Sawako HAMANAKA, Fukiko YAMADA, Masaya OGAWA   +3 more
openaire   +2 more sources

Towards Optimizing Neural Network-Based Quantification for NMR Metabolomics

Metabolites
Background: Quantification of metabolites from nuclear magnetic resonance (NMR) spectra in an accurate, high-throughput manner requires effective data processing tools. Neural networks are relatively underexplored in quantitative NMR metabolomics despite
Hayden Johnson, Aaryani Tipirneni-Sajja
doaj   +1 more source

Formation of Stable Amorphous Calcium Phosphate and Collagen Assemblies by a Versatile Spray‐Drying Approach

Advanced Functional Materials, EarlyView.
Amorphous calcium phosphate (ACP) microparticles with long‐term and thermal stability are prepared with or without collagen using a scalable one‐pot spray‐drying process. Under simulated physiological conditions, they crystallize into biomimetic bone mineral and, when combined with collagen, form extrudable, fibrillar bone‐like 3D constructs.
Camila Bussola Tovani, Nessma Bennaceur, Celina Benkhellat, Tristan Georges, Clara Doisneau, Vaskar Sardhalia, Thierry Azaïs, Flora Lemaire, Halima Kerdjoudj, Mohamed Selmane, Capucine Sassoye, Marie Albéric, Cédric Boissière, Nadine Nassif   +13 more
wiley   +1 more source

NMR studies of Successive Phase Transitions in Na0.5CoO2 and K0.5CoO2

, 2008
59Co- and 23Na-NMR measurements have been carried out on polycrystalline and c-axis aligned samples of Na0.5CoO2, which exhibits successive transitions at temperatures T = 87 K (= Tc1) and T = 53 K (= Tc2).
Bobroff J., Choy T.-P., Foo M. L., Gašparović G., Hu F., Lang G., Lee K.-W., Qian D., Sugiyama J., Takada K., Wang C. H., Wang N. L., Watanabe H., Yamakawa Y., Yokoi M., Zhou S.   +15 more
core   +1 more source