Probing solid-state reaction mechanisms with THz-TDS

Author

Parrott, Edward P. J. ; Zeitler, J. Axel ; Friscic, Tomislav ; Jones, William ; Gladden, Lynn F.

Author_Institution

Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Hong Kong, China

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

2

Abstract

Terahertz radiation is used to follow the solid state reaction to form cocrystals of theobromine and oxalic acid. The formation of an intermediate state is observed, and the cocrystal formation kinetics display a different reaction profile to the loss of the intermediate, thus supporting a moisture mediated reaction mechanism. We propose that THz-TDS is a useful tool in understanding such reactions, and by extension a research aid to understanding solid-state mechanisms and advancing green chemistry concerns.

Keywords

crystallisation; reaction kinetics; solid-state phase transformations; spectrochemical analysis; terahertz spectroscopy; terahertz wave spectra; green chemistry; intermediate state; solid state mechanisms; solid state reaction mechanisms; terahertz radiation; terahertz time domain spectroscopy; theobromine-oxalic acid cocrystal formation; Chemistry; Educational institutions; Kinetic theory; Mathematical model; Moisture; Solids; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on

Conference_Location

Tucson, AZ

Type

conf

DOI

10.1109/IRMMW-THz.2014.6956444

Filename

6956444