نتایج جستجو برای: molecule reaction
تعداد نتایج: 534517 فیلتر نتایج به سال:
Abstract Nanoporous solids, including microporous, mesoporous and hierarchically structured porous materials, are of scientific technological interest because their high surface-to-volume ratio ability to impose shape- size-selectivity on molecules diffusing through them. Enormous efforts have been put in the mechanistic understanding diffusion–reaction relationships nanoporous with ultimate go...
Abstract Nanoscale manipulation and characterization of individual molecules is necessary to understand the intricacies molecular structure, which governs phenomena such as reaction mechanisms, catalysis, local effective temperatures, surface interactions, charge transport. Here we utilize Raman enhancement between two nanostructured electrodes in combination with direct transport measurements ...
We present a new type of allosteric modulation in which a molecule bound outside the active site modifies the chemistry of an enzymatic reaction through rapid protein dynamics. As a test case for this type of allostery, we chose an enzyme with a well-characterized rate-promoting vibration, lactate dehydrogenase; identified a suitable small molecule for binding; and used transition path sampling...
Single-molecule force spectroscopy with an atomic force microscope has been widely used to study inter- and intramolecular interactions. To obtain data consistent with single molecular events, a well-defined method is critical to limit the number of molecules at the apex of an AFM probe to one or to a few. In this paper, we demonstrate an easy method for single-molecule probe modification by us...
Since FOX-7 (1, 1-diamino-2, 2-dinitroethylene) is a relatively new energetic material, little is known about its physical and chemical properties. Therefore, first-principles quantum chemical calculations are used to predict the energies of atoms of FOX-7. Under gentle heating (thermolysis) is likely to cause hydrogen transfer between molecules, producing highly reactive chemical species. Conv...
background : production of monoclonal antibodies to leishmania antigens assists the identification and characterization of these organisms. objective: production of monoclonal antibodies against epitopes on the gp63. methods: two murine monoclonal antibodies to gp63 were produced and characterized. the reactions of both antibodies with soluble leishmanial antigens, purified gp63 and truncated r...
Charge transport by tunnelling is one of the most ubiquitous elementary processes in nature. Small structural changes in a molecular junction can lead to significant difference in the single-molecule electronic properties, offering a tremendous opportunity to examine a reaction on the single-molecule scale by monitoring the conductance changes. Here, we explore the potential of the single-molec...
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