Tables at a glance

Table 1

Table 2

Table 3

Table 4

Table 5

Figures at a glance

Comments

Scheme 1

Comments

Figure 1

Comments

Scheme 2

Comments

Figure 2

Table 1

Table 1: Characteristics of primary composites

Table 2

DyeNo.	DMF	Methanol	Ethanol
DyeNo.	λmax(nm)	λmax(nm)	λmax(nm)
5a	355, 490	345, 505	360, 520
5b	360, 515	355, 507	345, 530
5c	350, 525	345, 520	355, 520
5d	335, 505	315, 505	320, 495
5e	330, 510	330, 500	330, 505

Table 2: UV-Visible spectra of the synthesized dyes in different solvents

Table 3

Dye No.	K/S	L*	a*	b*	C*	h°
5a	0.81	70.61	26.91	4.36	27.27	9.21
5b	2.15	72.69	29.98	7.79	30.97	14.56
5c	10.79	74.98	33.01	8.41	34.07	14.29
5d	2.82	75.79	33.5	13.14	35.99	21.41
5e	18.26	77.42	34.22	16.14	37.84	25.24

Table 3: Spectral data on cotton dyed samples

Table 4

Dye No.	K/S	L*	a*	b*	C*	h°
5a	1.13	68.53	13.35	13.85	19.23	46.03
5b	5.11	64.14	33.09	15.42	36.51	24.98
5c	8.44	68.34	37.43	19.14	43.83	31.34
5d	2.6	65.82	31.04	22.8	36.47	31.64
5e	19.88	69.06	40.4	25.92	48.07	32.66

Table 4: Spectral data on wool dyed samples

Table 5

Dye No	Cotton dyed Fabric				Wool dyed Fabric
	Wash fastness			Light fastness	Wash fastness			Light fastness
	Staining (1-5)		Colour Change		Staining (1-5)		Colour Change
	Cotton	Wool	Colour Change		Cotton	Wool	Colour Change
5a	4-5	4-5	-	4-5	4-5	4-5	-	3-4
5b	3	4-5	4	4	3-4	4-5	3-4	6
5c	3	4-5	3-4	3-4	4	4-5	4-5	5
5d	2	4-5	3	3-4	3	4-5	4	5
5e	2	4	3	4	3	4-5	34	6-7

Table 5: Fastness evaluation of cotton and wool dyed fabric

FIGURE 1

Scheme 1: Synthesis of 4,4'-(5,5'-(1,4-phenylene)bis(1,3,4-oxadiazole-5,2-diyl) dianiline

FIGURE 2

Figure 1: The structures of synthesized dyes were verified with different spectroscopic techniques (Scheme 2).

FIGURE 3

Scheme 2: Synthesis of Novel Bis-azo Naphthol Based Disperse Dyes

FIGURE 4

Figure 2: Photographs of cotton and wool dyed fabric with the synthesized dyes