Raman Spectroscopy of Sucrose, D(+) Glucose and D(-) Fructose in Terahertz and Infrared Frequencies

Molecular recognition and discrimination of organic compounds are important because hydrogen bonds and hydrogen-bonding interactions in organic compounds (especially carbohydrates) perform essential roles in energy metabolism and medical diagnosis. We investigate the Raman spectroscopy of sucrose, D(+) glucose and D(-) fructose in the terahertz and infrared frequency ranges. Sucrose consists of fructose and glucose rings and absorption bands specific for sucrose only are identified at ~1553 cm
^-1
and ~2679 cm
^-1
. Energy of the absorption band at ~3570 cm
^-1
is affected by crystalline fields and is different for these three compounds measured.