Scheme 17 Synthesis of metallomesogenic discotic polymers: (i) NaOH in 1,2-dimethoxy ethane,
(ii) copper(II)acetate in ethanol or palladium acetate in ethanol/methanol (1/2), (iii) dry 1,1,2,2tetrachloroethane (redrawn from Valdebenito et al. 2000)
Table 15 Phase behavior of metallomesogenic discotic polymers and low molecular weight
analogs (Ref 31: Valdebenito et al. 2000)
Mesogen
Metal
Phase behavior
Ref
84.1
Cu(II)
g 88 Col r 193 I
31
84.2
Pd(II)
Col r , dec at T 170
C
3 1
85.1
Cu(II)
Col h 134 I
31
85.2
Pd(II)
C 60 Col h 103 I
31
86.1
Cu(II)
C 55 C
0 78 Col h 106 I
I 105 Col h 42 C
0
C
0 76 Col h 107 I
31
86.2
Pd(II)
C 91 Col h 115 I
I 115 Col h 14 C
0
Cr 72,91 Col h 115 I
31
87.1
Cu(II)
C 60 Col h 116 I
I 115 Col h 18 C
0
C
0 55 Col h 114 I
31
87.2
Pd(II)
C 53 Col h 120 I
I 116 Col h 6 C
0
C
0 40 Col h 113 I
31
3 Liquid Crystalline Polymers Derived from Disc-Shaped Molecules
89