Table 2. The wave number of poly-GTAC-β-CD as well as poly-CM-β-CD and its corresponding IR vibration.

Wave number/cm−1	Annotation
1,770–1,750	the C=O stretching vibration of -COOH
1,190–1,001	C-O-C stretching vibration of ether in β-CD, demonstrating that FA binds chemically to poly-β-CD
3,500–3,250	O-H stretch
1282.6	O-H deflection
2,960–2,850	the stretching vibration of C-H
1,380	the δC-H of CH3
1,200–1,050	the stretching vibration of C-O