Journal of Magnetic Resonance, volume 244, pages 64-67

Remote sensing of sample temperatures in nuclear magnetic resonance using photoluminescence of semiconductor quantum dots

Robert Tycko 1
1
 
Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-0520, United States
Publication typeJournal Article
Publication date2014-07-01
Quartile SCImago
Q1
Quartile WOS
Q3
Impact factor2.2
ISSN10907807
Biochemistry
Biophysics
Condensed Matter Physics
Nuclear and High Energy Physics
Abstract
Knowledge of sample temperatures during nuclear magnetic resonance (NMR) measurements is important for acquisition of optimal NMR data and proper interpretation of the data. Sample temperatures can be difficult to measure accurately for a variety of reasons, especially because it is generally not possible to make direct contact to the NMR sample during the measurements. Here I show that sample temperatures during magic-angle spinning (MAS) NMR measurements can be determined from temperature-dependent photoluminescence signals of semiconductor quantum dots that are deposited in a thin film on the outer surface of the MAS rotor, using a simple optical fiber-based setup to excite and collect photoluminescence. The accuracy and precision of such temperature measurements can be better than ±5K over a temperature range that extends from approximately 50K (-223°C) to well above 310K (37°C). Importantly, quantum dot photoluminescence can be monitored continuously while NMR measurements are in progress. While this technique is likely to be particularly valuable in low-temperature MAS NMR experiments, including experiments involving dynamic nuclear polarization, it may also be useful in high-temperature MAS NMR and other forms of magnetic resonance.

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Tycko R. Remote sensing of sample temperatures in nuclear magnetic resonance using photoluminescence of semiconductor quantum dots // Journal of Magnetic Resonance. 2014. Vol. 244. pp. 64-67.
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Tycko R. Remote sensing of sample temperatures in nuclear magnetic resonance using photoluminescence of semiconductor quantum dots // Journal of Magnetic Resonance. 2014. Vol. 244. pp. 64-67.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.jmr.2014.04.021
UR - https://doi.org/10.1016/j.jmr.2014.04.021
TI - Remote sensing of sample temperatures in nuclear magnetic resonance using photoluminescence of semiconductor quantum dots
T2 - Journal of Magnetic Resonance
AU - Tycko, Robert
PY - 2014
DA - 2014/07/01 00:00:00
PB - Elsevier
SP - 64-67
VL - 244
SN - 1090-7807
ER -
BibTex
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BibTex Copy
@article{2014_Tycko,
author = {Robert Tycko},
title = {Remote sensing of sample temperatures in nuclear magnetic resonance using photoluminescence of semiconductor quantum dots},
journal = {Journal of Magnetic Resonance},
year = {2014},
volume = {244},
publisher = {Elsevier},
month = {jul},
url = {https://doi.org/10.1016/j.jmr.2014.04.021},
pages = {64--67},
doi = {10.1016/j.jmr.2014.04.021}
}
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