Spectroscopic investigation of phase transitions in 1-nonanol and 1-decanol

TL;DR

This study uses FTIR spectroscopy to analyze phase transitions in 1-nonanol and 1-decanol by observing temperature-dependent spectral changes linked to cluster structure transformations.

Contribution

It provides a comparative spectroscopic analysis of phase transitions in two monohydric alcohols over a wide temperature range.

Findings

Spectral changes correlate with phase transition points.

Cluster structure transformations are identified during phase changes.

Temperature influences the spectral features of alcohols.

Abstract

FTIR spectra of monohydric alcohols 1-nonanol (C9H19OH) and 1-decanol (C10H21OH) were registered in the spectral region from 500 cm-1 to 4000 cm-1 at temperatures from -50 to + 25 {\deg}C for 1-nonanol and +100 {\deg}C for 1-decanol. Temperature-induced spectra changes were compared for these two alcohols. The authors link the observed changes with the transformations of cluster structure occurring during phase transitions.