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Using electron paramagnetic resonance to map N@Cā‚†ā‚€ during high throughput processing.

Using electron paramagnetic resonance to map N@Cā‚†ā‚€ during high throughput processing.

Authors :
Plant SR
Porfyrakis K
Source :
The Analyst [Analyst] 2014 Sep 21; Vol. 139 (18), pp. 4519-24.
Publication Year :
2014

Abstract

The endohedral fullerene molecule, N@C60, is a candidate for molecular spin qubits (quantum bits) and spin probes owing to its exceptional electron spin properties. Advancements in the processing of N@C60 are key to obtaining samples of high purity on a reasonable timescale. We investigate enrichment by high throughput processing (flow rate of 18 L h(-1) and operating pressure of 1.5-2 MPa) using high performance liquid chromatography (HPLC) as a means of scaling N@C60 production. We use detection by electron paramagnetic resonance (EPR) spectroscopy to map N@C60 during processing, and through the reconstruction of the peak position in the chromatogram, we are able to determine the retention time and relative purity of N@C60 without the need for its isolation. Based on this, we establish a procedure for time-efficient, high throughput processing to isolate N@C60 in high purity.

Details

Language :
English
ISSN :
1364-5528
Volume :
139
Issue :
18
Database :
MEDLINE
Journal :
The Analyst
Publication Type :
Academic Journal
Accession number :
25054365
Full Text :
https://doi.org/10.1039/c4an00734d