Electrical Switching in Thin Films of Nandi Flame Seed Cuticles

Table 1

FT-IR frenquencies (cm⁻¹) of cutin, suberin, and NFSC. ^*Benítez et al. [37], Cordeiro et al. [39].

Cutin^∗	Suberin^∗	NFSC	Band assignment	Comments^∗
3300	3464	3348	𝜈(O–H)	Alcoholics and Phenolic hydroxyl groups
2924	2919	2916	𝜈ass(C–H),	Aliphatic stretch,
2852	2851			Methoxyl groups,
		2615	𝜈s(C–H)	Methylene groups
1736	1738	1682	𝜈as(COO^−),	Ester carbonyl,
1731			𝜈(C=O)	Ketone groups
1630	1635
		1603	𝜈(C=C)	Conjugated double bonds,
1530	1513			benzenoid rings
	1463		𝛿(C–H)	Aromatic ring
	1437	1427	𝜈ass(C–H)
	1364			Metoxyl groups
	1300	1319		Esters linkages,
	1210		𝜈ass(C–O–C)	Phenolics,
				Glycosidic link.
1167	1130	1157	𝜈(C–O)	Aliphatic alcohols or Aliphatic esters
1100			𝜈(C–H)	Benzene ring
1055	1050	1033	𝛿(O–H),	Primary and secondary alcohols
			𝜈(C–O)