1H NMR relaxation study of liquid and supercooled n-butanol

Abstract

In this study we have measured 1H relaxation times T1 and T2 of deuterated n-butanol (C4D9OH) in a wide range of temperatures (from 280 K down to 140 K). 1H NMR spectra showed expected gradual line broadening with decreasing temperature, more profound in super- cooled liquid (e.g. below 180 K). The characteristic T1 minimum was found at ca. 240 K.

The relaxation data were interpreted with a help of two relaxation models.

Keywords

• relaxation
• study
• liquid
• supercooled
• n-butanol