T1-T2* relaxation time measurements to monitor mechanochemical reactions

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University of New Brunswick


Mechanochemistry has quickly grown into a popular field of chemistry because of its environmental benefits and its wide scope of chemical reactions and industrial applications. While the mechanisms are still poorly understood, many attempts have been made to better understand using in-situ and real-time measurements, such as Raman spectroscopy and synchrotron X-ray diffraction. Magnetic resonance is widely used across medical, industrial, and academic fields. Relaxation time correlation measurements are of interest for many samples and applications. Solid samples can be challenging to measure and have not often been analysed using relaxation time correlation measurements. Here, we employ 1H T1-T2* correlation measurements to analyse and monitor mechanochemical reactions of quinoxaline derivatives and metal-organic frameworks (MOFs). With the MOF reactions, in-situ measurements were employed using lab-made Teflon jars. Exponential and non-exponential data processing was compared and used to verify conservation of signal.