Results 311 to 320 of about 280,815 (357)

Local Steric Hindrance for CO2 Electroreduction at a Thermodynamic Potential and Wide Working Window

Advanced Energy Materials
To improve the energy‐conversion efficiency and adaptability between a CO2 electroreduction system and intermittent renewable energy, small onset potentials, and wide working windows are highly important.
Ming Li, Kang Yang, Yuntong Sun, Tianqi Gao, Zhihao Nie, Sheng Chen, Qiang Li, Jingjing Duan   +7 more
semanticscholar   +1 more source

High-stable all-iron redox flow battery with innovative anolyte based on steric hindrance regulation.

Angewandte Chemie
All-soluble all-iron redox flow batteries (AIRFBs) are an innovative energy storage technology that offer significant financial benefits. Stable and affordable redox-active materials are essential for the commercialization of AIRFBs, yet the battery ...
Jiahui Yang, Wei Wei, Chengxi Zhou, Hui Yan, Hangxin Che, Leiduan Hao, Xinyi Tan, Alex W. Robertson, Tai‐Sing Wu, Y. Soo, Ao Tang, Zhenyu Sun   +11 more
semanticscholar   +1 more source

Rational Design of Near‐Infrared Polymer Acceptors Using Steric Hindrance Strategy for High‐Performance Organic Solar Cells

Advanced Functional Materials
The unprecedented development of all‐polymer solar cells (all‐PSCs) is hindered by their low short‐circuit current density (Jsc), mainly due to the absence of near‐infrared (NIR) polymer acceptor materials.
Xiaoming Li, Lingyu Chen, Lingxian Meng, Chen Zhang, Xiaopeng Duan, Yuheng Man, M. H. Jee, Lili Han, Yiyang Pan, Donghui Wei, Xiangjian Wan, Han Young Woo, Yongsheng Chen, Yanming Sun   +13 more
semanticscholar   +1 more source

Steric hindrance in acetamidomesitylene

Journal of Applied Chemistry, 1951
AbstractThe acetyl group of acetamidomesitylene is not split off either by acids or by alkalis under analytical conditions. A laboratory preparation of acetamidomesitylene is described.
openaire   +1 more source

Precisely Manipulating Steric Hindrance Effect on DNA Walker for Tunable Detection of MicroRNA Using Enzymatic Strand Displacement Amplification.

Analytical Chemistry
The spatial constraints imposed by the DNA structure have significant implications for the walking efficiency of three-dimensional DNA walkers. However, accurately quantifying and manipulating steric hindrance remains a challenging task.
J. Dong, Sai Mei Zhang, Yi Lin Zhang, Ya Jie Fan, Y. Li, Ming Su, Zhen Guang Wang, Shi Gang Shen, Z. Gao, Qin Wei, Fan Xia   +10 more
semanticscholar   +1 more source

Accelerating Toluene Oxidation over Boron-Titanium-Oxygen Interface: Steric Hindrance of the Methyl Group Induced by the Plane-Adsorption Configuration.

Environmental Science and Technology
Elimination of dilute gaseous toluene is one of the critical concerns within the field of indoor air remediation. The typical degradation route on titanium-based catalysts, "toluene-benzaldehyde-carbon dioxide", necessitates the oxidation of the methyl ...
Wenqiang Qu, Zixiang Xu, Christoph G. Gruber, Hongmei Li, Xiaonan Hu, Limin Zhou, Haiyan Duan, Jin Zhang, Min Liu, E. Cortes, Dengsong Zhang   +10 more
semanticscholar   +1 more source

Steric hindrance in aromatic hydrogen exchange

Journal of the Chemical Society, Chemical Communications, 1973
Acid-catalysed hydrogen exchange at the ortho position of tetraphenylmethane is sterically hindered, and is only the second known example of hindrance in the reaction.
Herbert V. Ansell, Roger Taylor
openaire   +1 more source

Steric hindrance in macromolecular solutions

Journal of Polymer Science, 1947
AbstractThe same point in the space cannot be occupied simultaneously by two molecules. In a solution of rigid rodlike macromolecules, each molecule prevents its neighbors from occupying certain positions, the whole of which form the forbidden angle. Calculation shows that in the case of rigid, filiform molecules, this angle is large even at very low ...
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Steric Hindrance Enzyme Immunoassay (Sheia)

1985
We have developed a new enzyme immunoassay for the quantitation of small antigens. The assay is called SHEIA (Steric Hindrance Enzyme Immunoassay) since, this assay involves the interference of complex formation between the antigen (or hapten) coupled enzyme and the enzyme inhibitor attached to agarose by antibody to the antigen (or hapten), probably ...
Albert Castro, Nobuo Monji
openaire   +1 more source

Inhibition of Nitrosation by Steric Hindrance

Journal of Agricultural and Food Chemistry, 1997
The nitrosation of piperidine, 2-methylpiperidine, 4-methylpiperidine, 2,6-dimethylpiperidine, and 2-ethylpiperidine in acid medium was studied. Kinetic monitoring of the reactions was accomplished by spectrophotometric analysis of the nitrosamine formed at λ = 249 nm.
Samuel González-Mancebo, Emilio Calle, M. Pilar García-Santos, Julio Casado   +3 more
openaire   +1 more source