Biomedical Engineering Reference
In-Depth Information
C
n
H
2n+1
X
N
C
n
H
2n+1
40a-b
OC
n
H
2n+1
SO
3
X
+
O
OC
n
H
2n+1
X
N
N
H
+
X
-
O
3
S
OC
n
H
2n+1
40c-f
O(CH
2
)
n
O(CH
2
)
n
N
X
N
O(CH
2
)
n
40g-i
Figure 9.16
Anthracene-based ionic self-assemblies.
Table 9.7
Phase transition behavior of Anthracene based
ionic self-assemblies
40a-i
.
Compound
n
Phase Transition behavior
40a
16
Cr
1
49 Cr
2
170 dec
40b
18
Cr
1
45 Cr
2
180 dec
40c
8
r
1
20 Cr
2
90 Cr
3
180 dec
40d
12
Cr
1
66 Cr
2
85 Cr
3
180 dec
40e
14
Cr
1
77 Cr
2
99 Cr
3
170 dec
40f
16
Cr
1
85 Cr
2
106 Cr
3
170 dec
40g
8
ol
h
73 Cr 129 I
40h
12
Col
h
193 I
40i
16
Cr 47 Col
h
240 dec
crystalline. h is compound is solid at room temperature and no changes
were observed on heating up to 350 C. It might be possible that the ionic
nature of this compound and dipolar interaction between the molecules
increases its melting point up to a temperature range incompatible with
mesomorphism.
