نتایج جستجو برای: catalyzed proton exchange

تعداد نتایج: 291766  

2009
X. H. Wang W. J. Wang Q. Zhang X. P. Qiu X. Guo L. T. Liu

This paper presents our research on silicon-based proton exchange membranes for siliconbased micro fuel cell applications. The porous silicon membranes with a thickness of 20-40 m were fabricated. And the porous silicon-based proton exchange membranes were formed by using the combination of the porous silicon membranes and Nafion solution. The proton conductivities of the porous silicon-based P...

2009
Yu Chun Chen

Strangeness content is one of the most important questions in hadron structure because it sheds light on the role of the quark-anti quark sea in the ground state properties. One important tool is elastic parity-violating electron-proton scattering, which has been used to probe the the charge and magnetization distributions of the strange quark within the nucleon. At the tree level, the parity-v...

2017
Liying Ma Jing Li Jie Xiong Guoxiao Xu Zhao Liu Weiwei Cai

Based on a previously developed polyamide proton conductive macromolecule, the nano-scale structure of the self-assembled proton conductive channels (PCCs) is adjusted via enlarging the nano-scale pore size within the macromolecules. Hyperbranched polyamide macromolecules with different size are synthesized from different monomers to tune the nano-scale pore size within the macromolecules, and ...

Journal: :Molbank 2021

The 1,2,3-triazole is a well-known biologically active pharmacophore constructed by the copper-catalyzed azide–alkyne cycloaddition. We herein reported synthesis of 4-amino-7-chloro-based [1,2,3]-triazole hybrids via Cu(I)-catalyzed Huisgen 1,3-dipolar cycloaddition 4-azido-7-chloroquinoline with an alkyne derivative acetaminophen. compound was fully characterized Fourier-transform infrared (FT...

Journal: :Physical chemistry chemical physics : PCCP 2012
Giuseppe Felice Mangiatordi Valeria Butera Nino Russo Damien Laage Carlo Adamo

A detailed theoretical investigation of the charge transport mechanism in poly(4-vinyl-imidazole) (P4VI), the parent polymer of a series of N-heterocyclic-based membranes used as an electrolyte in proton exchange membrane fuel cells, is presented. In particular, Density Functional Theory (DFT) results obtained for small model systems (protonated imidazole dimers and trimers) suggest that the co...

Journal: :Bulletin of the Chemical Society of Japan 1971

Journal: :Biophysical journal 2016
Lei Xu Linda Näsvik Öjemyr Jan Bergstrand Peter Brzezinski Jerker Widengren

Lipid membrane surfaces can act as proton-collecting antennae, accelerating proton uptake by membrane-bound proton transporters. We investigated this phenomenon in lipid nanodiscs (NDs) at equilibrium on a local scale, analyzing fluorescence fluctuations of individual pH-sensitive fluorophores at the membrane surface by fluorescence correlation spectroscopy (FCS). The protonation rate of the fl...

Journal: :Bulletin of the Chemical Society of Japan 1987

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