Synthesis and characterization of thermally stable aromatic polyamides and poly(1,3,4-oxadiazole-amide)s nanoparticles containing pendant substituted bezamides

Table 1 Optical properities of polyamides 12-25, polyhydrazides 31, 32 and poly(1,3,4-oxadiazoles) 33, 34

Polymer No	^aλ_abs(nm)	ε^b(M^-1 cm^-1)	^cλ_em(nm) (^dλ_exat 300 nm)
12	292	2400	345, 647
13	288	4300	361, 696
14	286	20000	343, 642
15	278	7100	341, 650
16	284	12000	345, 650
17	276	4600	338, 646
18	297	17200	364, 407
18	325	18100	420, 744
19	285	6900	362, 644
19	323	9000
20	295	23500	347, 642
21	291	8500	340, 652
23	282	8700	341, 646
24	309	25000	346, 658
25	286	5200	336, 376
25	305	5700	400, 684
31	280	7700	357, 502
32	274	8400	363 (w), 427
33	283	10000	360 (w), 431
34	277	6800	363 (w), 428, 529 (w), 637(sh)

ISSN: 2661-801X