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Type: Artigo de periódico
Title: Aplicação da espectroscopia de ressonância magnética nuclear para estudos de difusão molecular em líquidos: a técnica DOSY
Title Alternative: Using nuclear magnetic resonance spectroscopy to study molecular diffusion in liquids: the DOSY technique
Author: Souza, Alexandre Araújo de
Laverde Jr., Antonio
Abstract: Diffusion coefficients provide uniquely detailed and easily interpreted information on molecular organization and phase structure. They are quite sensitive to structural changes, and to binding and association phenomena, in particular for liquid colloidal or macromolecular systems. This paper describes the principles of diffusion measurements in liquids by pulsed magnetic field gradient spin-echo (PFG-SE) NMR spectroscopy. The important PFG-SE technique known as DOSY is presented and discussed. This is a noninvasive technique that can provide individual multicomponent translational diffusion coefficients with good precision in a few minutes, without the need for radioactive isotopic labelling.
Subject: diffusion in liquids
pulsed field gradient spin-echo NMR
Editor: Sociedade Brasileira de Química
Citation: Química Nova. Sociedade Brasileira de Química, v. 25, n. 6a, p. 1022-1026, 2002.
Rights: aberto
Identifier DOI: 10.1590/S0100-40422002000600020
Date Issue: 1-Nov-2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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