Monitoring electrochemical reactions in situ using steady-state free precession (13)C NMR spectroscopy.
Anal Chim Acta
; 850: 1-5, 2014 Nov 19.
Article
em En
| MEDLINE
| ID: mdl-25441154
ABSTRACT
All attempts to use in situ(13)C NMR in spectroelectrochemical studies, using static cells and unlabeled substrates, have failed due to the very long average time (several hours). In this paper, we demonstrated that steady-state free precession (SSFP) pulse sequence can enhance signal to noise ratio and reduces the average time of (13)C NMR signals by more than one order of magnitude. The results showed that each (13)C NMR spectrum during the electrochemical reduction of 9-chloroanthracene, in a static cell, can be acquired in eleven minutes. This short averaging time allowed the analysis of the reaction every 30min during 3h. The phase and truncation anomalies present in SSFP spectra were minimized using Traff apodization function and Krylov basis diagonalization method (KBDM).
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Anal Chim Acta
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Brasil