Carbazole Containing Copolymers: Synthesis, Characterization, and Applications in Reversible Holographic Recording

Table 3

Attribution of infrared absorption bands.

PVK	CEM1-CEM2 (50-50)	CEM1-OMA (60-40 or 80-20)	PMMA	Attribution
	3484	3484	3439	C=O stretch overtone (ester)
3081	3081	3081
3049	3049	3049		Aromatic C-H stretch
3022	3022	3022
	2986	2986	2993	CH3 antisymetric stretch
	2941	2953	2953	CH3 antisymetric stretch
2964		2928	2922	CH2 antisymetric stretch
	2878	2880 and 2869	2880	CH3 symetric stretch
2856		2854	2843	CH2 symetric stretch
	1728	1728	1730	C=O stretch
1625	1628	1628
1597	1597	1597		Ring stretch
1483	1485	1485
	1460	1460		CH3 antisymetric bend
			1445	“scissors” CH2 bend
1452	1454	1454		“scissors” CH2 bend overlapped with “sideways" ring stretch
	1385	1385	1388	CH3 “umbrella” symmetric bend
	1351	1351		CH2 wagging bend (pendant groups)
1332	1332	1332		Caromatic-N stretch
1325	1325	1325		CH bend
	1260	1260	1268
	1247	1247	1242	C(O)-O-C stretch
1236	1230	1230		Ccarbazole-N stretch
1224	1215	1215		Caliphatic-N stretch
	1160 (broad)	1160 (broad)		O-C(O)-C stretch
1158	1153	1153	1149	C-C main chain or CH2 rocking
1132	1132	1132		carbazole
1122	1122	1122		carbazole
1027	1021	1021		Ortho-substituted aromatic cycle
745	751	751	752	Out-of-plane bending of aromatic C-H
721	724	724		Concerted rocking of the CH2