Molecular Mapping by Low-Energy-Loss Energy-Filtered Transmission Electron Microscopy Imaging

dc.creatorLinares, EM
dc.creatorLeite, CAP
dc.creatorValadares, LF
dc.creatorSilva, CA
dc.creatorRezende, CA
dc.creatorGalembeck, F
dc.date2009
dc.date42064
dc.date2014-11-17T01:32:06Z
dc.date2015-11-26T16:34:45Z
dc.date2014-11-17T01:32:06Z
dc.date2015-11-26T16:34:45Z
dc.date.accessioned2018-03-28T23:17:03Z
dc.date.available2018-03-28T23:17:03Z
dc.identifierAnalytical Chemistry. Amer Chemical Soc, v. 81, n. 6, n. 2317, n. 2324, 2009.
dc.identifier0003-2700
dc.identifierWOS:000264142000037
dc.identifier10.1021/ac8024834
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/57786
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/57786
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/57786
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1271292
dc.descriptionStructure-function relationships in supramolecular systems depend on the spatial distribution of molecules, ions, and particles within complex arrays. Imaging the spatial distribution of molecular components within nano-structured solids is the objective of many recent techniques, and a powerful tool is electron spectroscopy imaging in the transmission electron microscope (ESI-TEM) in the low-energy-loss range, 0-80 eV. This technique was applied to particulate and thin film samples of dielectric polymers and inorganic compounds, providing excellent distinction between areas occupied by various macromolecules and particles. Domains differentiated by small changes in molecular composition and minor differences in elemental contents are clearly shown. Slight changes in the molecules produce intensity variations in molecular spectra that are in turn expressed in sets of low-energy-loss images, using the standard energy-filtered transmission electron microscopy (EFTEM) procedures. The molecular map resolution is in the nanometer range and very close to the bright-field resolution achieved for the same sample, in the same instrument. Moreover, contrast is excellent, even
dc.description81
dc.description6
dc.description2317
dc.description2324
dc.languageen
dc.publisherAmer Chemical Soc
dc.publisherWashington
dc.publisherEUA
dc.relationAnalytical Chemistry
dc.relationAnal. Chem.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectX-ray Spectromicroscopy
dc.subjectInelastic Scattering
dc.subjectLoss Spectroscopy
dc.subjectCarbon Nanotubes
dc.subjectLatex Films
dc.subjectParticles
dc.subjectEftem
dc.subjectEels
dc.subjectTem
dc.subjectMicrochemistry
dc.titleMolecular Mapping by Low-Energy-Loss Energy-Filtered Transmission Electron Microscopy Imaging
dc.typeArtículos de revistas


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