Article
ATR-FTIR Spectroscopy and their Applications in the Ring-Opening Reaction of Spiropyran Polymers
Autor
Rojas López, Marlon
Institución
Resumen
in this work we applied FTIR vibrational spectroscopy in Attenuated Total Reflectance mode, to observe the
transient species, in an acetone solution at very low weight concentration, due to the molecular transformation from
spiropyran to merocyanine form, in four different spiropyran types. In UVA^IS spectroscopy a new peak generation in the
visible region was observe. In ATR, the peak shift from 1487 cm' to 1510 cm' and two new peaks generation at 1568 cm'
and 1595 cm' are associated to the ring. Also, due to the C-O break down bonding when the molecular transformation was
done, the peak associated to the O-C-N bond diminished in intensity and the new peaks generations between 900 to 1000
cm' , are associated to this molecular transformation.