A 13C‐Labeled Triarylmethyl Radical as an EPR Spin Probe Highly Sensitive to Molecular Tumbling.
- Resource Type
- Article
- Authors
- Poncelet, Martin; Driesschaert, Benoit
- Source
- Angewandte Chemie. 9/14/2020, Vol. 132 Issue 38, p16593-16596. 4p.
- Subject
- *ELECTRON paramagnetic resonance
*HYPERFINE coupling
*ELECTRON paramagnetic resonance spectroscopy
*MOLECULAR dynamics
*HYPERFINE interactions
- Language
- ISSN
- 0044-8249
A stable triarylmethyl spin probe whose electron paramagnetic resonance (EPR) spectrum is highly sensitive to molecular tumbling is reported. The strong anisotropy of the hyperfine coupling tensor with the central carbon of a 13C1‐labeled triarylmethyl radical enables the measurement of the probe rotational correlation time with applications to measure microviscosity and molecular dynamics. [ABSTRACT FROM AUTHOR]