Table 3 Phase behavior of tetraalkoxy polyesters, tetraalkanoyloxy polyesters and tetraalkanoyloxy polyamides based on benzene (Ref 4: Schönherr et al. 1986, Ref 5: Ringsdorf et al.
1987)
Mesogen
R
R’
Phase behavior
Ref
10.1
C 7 H 15
H
g 97 M 146 M
0 260 I
4
10.2
C 9 H 19
H
g 50 Cr 95 M 138 I
4
10.3
C 11 H 23
H
g 55 Cr 63 M 123 I
4
10.4
C 7 H 15
OC 8 H 17
Cr 50 I
4
11.1
C 8 H 17
H
g 150 M 208 M
0 246 I
4
11.2
C 12 H 25
H
Cr 25 M 210 I
4
11.3
C 12 H 25
OC 12 H 25
Cr 74 I
4
11.4
C 12 H 25
OC 8 H 17
Cr 67 I
4
12.1
C 8 H 17
H
Cr 273 I
5
12.2
C 8 H 17
OC 8 H 17
Cr 39 M 117 I
5
12.3
C 8 H 17
OC 12 H 25
Cr 51 M 69 I
5
12.4
C 12 H 25
H
Cr 270 I
5
12.5
C 12 H 25
OC 12 H 25
Cr 17 M 70 M
0 130 I
5
12.6
C 12 H 25
OC 8 H 17
Cr 61 M 122 I
5
12.7
C 14 H 29
OC 14 H 29
Cr 38 M 74 M
0 88 M
00 106 I
5
12.8
C 16 H 33
OC 16 H 33
Cr 86 I
5
HO
OH
RO
OR
RO
OR
ClOC
COCl
R'
R'
8
O
O
RO
OR
RO
OR
O
O
x
R'
R'
5
11.1-11.4
(i)
Scheme 3 Synthesis of tetraalkoxy benzene polyesters: (i) pyridine, toluene, 60
C, 24 h (redrawn
from Schönherr et al. 1986)
Scheme 4 Synthesis of benzene polyamides: (i) N-methyl-2-pyrrolidone, R.T., 2–4 h,
60
C–70
C, 24 h (redrawn from Ringsdorf et al. 1987)
3 Liquid Crystalline Polymers Derived from Disc-Shaped Molecules
65