Synthesis, spectral characterization (FT-IR, NMR, XRD) and computational studies of chloroacetyl chloride incorporated 3t-butyl-2r,6c-diphenyl/di(thiophen-2-yl)piperidin-4-ones

Covalent Amine Tethering on Ketone Modified Porous Organic Polymers for Enhanced CO2 Capture

“…The FTIR spectra of COP-130 ( Figure 1b) demonstrates a broad aliphatic peak in the range of 2850-3000 cm À 1 [17] that persists throughout all the other structures as well, small CÀ Cl peak at 792 cm À 1 , [18] and a sharp peak at 750 cm À 1 [19] that arises from the linker orientation on the aromatic ring. Acylated polymer shows a strong carbonyl peak appearance at 1700 cm À 1 [18] and a noticeable increase in CÀ Cl peak intensity. Further amination results in a significant decrease in CÀ Cl peak intensity, which suggests the successful substitution of Cl atoms by amines.…”

“…The addition of carbonyl units prompted us to monitor FTIR spectra first, since the progression of modification can be easily tracked. The FTIR spectra of COP-130 (Figure 1b) demonstrates a broad aliphatic peak in the range of 2850-3000 cm À 1 [17] that persists throughout all the other structures as well, small CÀ Cl peak at 792 cm À 1 , [18] and a sharp peak at 750 cm À 1 [19] that arises from the linker orientation on the aromatic ring. Acylated polymer shows a strong carbonyl peak appearance at 1700 cm À 1 [18] and a noticeable increase in CÀ Cl peak intensity.…”