On electrophoretic NMR. Exploring high conductivity samples
2014 (English)In: Journal of magnetic resonance (San Diego, Calif. 1997: Print), ISSN 1090-7807, E-ISSN 1096-0856, Vol. 243, 17-24 p.Article in journal (Refereed) Published
The performance of a new electrophoretic NMR (eNMR) method that uses a Carr-Purcell-Meiboom-Gill echo train with repeated electric field reversal is investigated. We show that this pulse sequence, with acronym CPMGER, yields strongly reduced artifacts from convective flow effects caused by the simultaneous presence of electroosmotic and thermal driving forces. We demonstrate the achieved improvements in various aqueous solutions. Ultimately, the method can be used for obtaining electrophoretic mobilities by eNMR without relying on uncharged reference molecules, otherwise a significant limitation for electrophoretic experiments performed with nuclei other than 1H.
Place, publisher, year, edition, pages
2014. Vol. 243, 17-24 p.
CPMG, Double stimulated echo, Electroosmosis, eNMR, Sample cell, Thermal convection
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-145393DOI: 10.1016/j.jmr.2014.03.005ISI: 000337121300003ScopusID: 2-s2.0-84898065953OAI: oai:DiVA.org:kth-145393DiVA: diva2:718065
FunderSwedish Research Council
QC 201405192014-05-192014-05-192014-08-25Bibliographically approved