Sensing and characterization of bisphenol ‘AF’ with mid-infrared spectroscopy and searching the commonality among bisphenol ‘A’, ‘S’ and ‘AF’

Mid-infrared spectroscopy (400 cm-1 to 4000 cm-1) of Bisphenol ‘AF’ is manifested. Bisphenol ‘AF’ is another variant of Bisphenol ‘A,’ besides Bisphenol ‘S’. Bisphenol ‘A’ is being curbed due to its malign effects. Bisphenol ‘AF’ is gradually taking the place of Bisphenol ‘A.’ Bisphenol ‘AF’ tends to have malignancy equal or more than Bisphenol ‘A.’ Molecular vibrations of Bisphenol ‘AF’ have been observed by mid-infrared spectroscopy and analyzed by Density Functional Theory calculations for possible countermeasure. Principal Component Analysis is used on detected absorption frequencies of Bisphenol ‘AF’ in conjunction with prior reported frequencies of Bisphenol ‘A’ and ‘S’ in the mid-infrared range. List of correlating absorption frequencies of bisphenol ‘A,’ ‘S’ and ‘AF in the mid-infrared range is populated. This correlation may lead to group such toxic materials and to find the origin of toxicity by knowing the nature of correlated vibrations and related involvement of functional groups and atoms.