1.2 FT-IR spectroscopic analysisFou

1.2 FT-IR spectroscopic analysis
Fourier Transformed infrared (FT-IR) spectra of the two
BRs were recorded on a Nicolet FT-IR 6700 spectrophotometer
(Thermo Fisher Scientific, USA). Two milligrams
of separate dried milled samples were ground with 400
mg KBr (FT-IR grade) and homogenized in an agate
mortar. The pellets were compressed under vacuum and
then scanned for wavenumbers ranging from 400 to 4000
cm−1.