Results 81 to 90 of about 218,969 (305)

Hydrogenation of single-walled carbon nanotubes [PDF]

, 2005
Towards the development of a useful mechanism for hydrogen storage, we have studied the hydrogenation of single-walled carbon nanotubes with atomic hydrogen using core-level photoelectron spectroscopy and x-ray absorption spectroscopy. We find that atomic hydrogen creates C-H bonds with the carbon atoms in the nanotube walls and such C-H bonds can be ...
arxiv   +1 more source

Direct Observation of Early-stage Quantum Dot Growth Mechanisms with High-temperature Ab Initio Molecular Dynamics [PDF]

, 2015
Colloidal quantum dots (QDs) exhibit highly desirable size- and shape-dependent properties for applications from electronic devices to imaging. Indium phosphide QDs have emerged as a primary candidate to replace the more toxic CdSe QDs, but production of
Jensen, Klavs F., Kulik, Heather J., Xie, Lisi, Zhao, Qing   +3 more
core   +4 more sources

Active Hydrogen for Electrochemical Ammonia Synthesis

Advanced Functional Materials, EarlyView.
This review provides a comprehensive overview of the active hydrogen (H*) for electrochemical ammonia synthesis with particular attention given to the regulation of H* generation and consumption to suppress the competition of hydrogen evolution reaction and enhance the yield, selectivity, and Faradaic efficiency of ammonia.
Guoqiang Gan, Guo Hong, Wenjun Zhang
wiley   +1 more source

Plasticity of hydrogen bond networks regulates mechanochemistry of cell adhesion complexes [PDF]

, 2014
Mechanical forces acting on cell adhesion receptor proteins regulate a range of cellular functions by formation and rupture of non-covalent interactions with ligands. Typically, force decreases the lifetimes of intact complexes (slip-bonds), making the discovery that these lifetimes can also be prolonged ("catch-bonds"), a surprise.
arxiv   +1 more source

Covalently‐Bonded Diaphite Nanoplatelet with Engineered Electronic Properties of Diamond

Advanced Functional Materials, EarlyView.
A novel approach to engineering the electronic properties of diamond is reported on the diaphite nanoplatelet consisting of (11¯${{\bar{1}}}$1) planes of diamond nanoplatelet covalently bonded with graphite (0001) planes. The strong sp3/sp2‐hybridized interfacial covalent bonding induces the electron transfer from diamond to graphite, resulting in a ...
Zhaofeng Zhai, Chuyan Zhang, Bin Chen, Ying Xiong, Yan Liang, Lusheng Liu, Bing Yang, Nianjun Yang, Xin Jiang, Nan Huang   +9 more
wiley   +1 more source

Mass Spectrometric Study on 9-Fluorenylmethyloxycarbonyl Group Removal Assisted by 2-Methoxyacetic Acid in Gas Phase [PDF]

Zhipu Xuebao
The detachment of 9-fluorenylmethyloxycarbonyl (Fmoc) from the amino group is widely performed in chemical synthesis reactions, involving peptides, nucleosides, polymers and some other organic compounds.
GAO Xiao-fei1, YAO Ze-hua1, DONG Mao-you1, CHEN Xiang-zhao2
doaj   +1 more source

Hydrogen transport in superionic system Rb3H(SeO4)2: a revised cooperative migration mechanism

, 2011
We performed density functional studies of electronic properties and mechanisms of hydrogen transport in Rb3H(SeO4)2 crystal which represents technologically promising class M3H(XO4)2 of proton conductors (M=Rb,Cs, NH4; X=S,Se).
A. I. Baranov, A. I. Baranov, A. Pawlowski, A. Pietraszko, B. Hilczer, B. V. Merinov, B. V. Merinov, B. V. Merinov, H. Jonsson, I. V. Stasyuk, I. V. Stasyuk, J. Tollefson, M. Polomska, N. Pavlenko, P. Blaha   +14 more
core   +1 more source

Reactivity of the Indenyl Radical (C9 H7 ) with Acetylene (C2 H2 ) and Vinylacetylene (C4 H4 ). [PDF]

, 2019
The reactions of the indenyl radicals with acetylene (C2 H2 ) and vinylacetylene (C4 H4 ) is studied in a hot chemical reactor coupled to synchrotron based vacuum ultraviolet ionization mass spectrometry.
Ablikim, Utuq, Ahmed, Musahid, Azyazov, Valeriy N, Howlader, A Hasan, Kaiser, Ralf I, Lu, Wenchao, Mebel, Alexander M, Oleinikov, Artem D, Prendergast, Matthew B, Wnuk, Stanislaw F, Xu, Bo, Zhao, Long   +11 more
core   +2 more sources

Facet‐Junction Induced Strong Metal Support Interaction for Enhanced Alkaline Hydrogen Evolution Reaction

Advanced Functional Materials, EarlyView.
In this study, a novel facet‐junction strategy is proposed to enhance the strong metal‐support interaction (SMSI) between the loaded Ru atoms and the Co3O4 support. The synthesized structure with the incorporation of Ru doping and the (100)/(111) crystal plane junction has a particular influence on the catalyst's hydrogen evolution reaction (HER ...
Wenqian Shen, Qiang Fu, Chi Shing Tsang, Lok Wing Wong, Xiaodong Zheng, Jiong Zhao, Thuc Hue Ly   +6 more
wiley   +1 more source

Effects of hole self-trapping by polarons on transport and negative bias illumination stress in amorphous-IGZO

, 2017
The effects of hole injection in amorphous-IGZO is analyzed by means of first-principles calculations. The injection of holes in the valence band tail states leads to their capture as a polaron, with high self-trapping energies (from 0.44 to 1.15 eV ...
A. de Jamblinne de Meux, G. Pourtois, J. Genoe, Jónsson H., P. Heremans   +4 more
core   +1 more source