Chemistry Reference
In-Depth Information
R
p
and
A
p
(at the Pivotal Plane), for Different Lipids at Different
Temperatures and Water Mole Ratios,
n
w
a
A
p
( Å
2
)
A
w
( Å
2
)
Lipid
T
( ° C)
n
w
R
p
( Å )
R
w
( Å )
V
p
/
V
l
(18:1c Δ
9
)
2
PE
10
18.0
37.8
22.8
78.5 ± 2.9
47.3
0.215 ± 0.086
15
17.5
34.2
22.1
73.2 ± 1.7
47.4
0.399 ± 0.044
20
16.9
29.1
21.5
63.9
±
1.6
47.1
0.650
±
0.034
20
19.5
30.6
22.6
69.8
±
0.3
50.6
0.616
±
0.050
22
19.1
30.0
22.1
51.8
70.3
±
1.4
0.604
±
0.024
22
20.3
31.0
22.6
72.9
±
1.3
53.9
0.562
±
0.027
22
18.1
28.9
21.6
66.3 ± 0.8
50.2
0.649 ± 0.015
25
16.6
28.4
21.0
64.3 ± 1.6
47.5
0.659 ± 0.033
30
16.2
27.8
20.5
64.6 ± 2.0
47.6
0.665 ± 0.040
35
16.0
27.3
20.0
65.5 ± 2.1
48.0
0.663 ± 0.041
40
15.6
26.2
19.5
64.2
±
1.9
47.9
0.697
±
0.037
45
15.2
25.3
19.1
63.4
±
1.9
47.8
0.719
±
0.035
50
14.9
24.5
18.6
48.0
63.0
±
2.1
0.738
±
0.035
55
14.7
24.2
18.3
63.7
±
2.2
48.3
0.735
±
0.037
60
14.5
23.0
17.9
64.5 ± 2.4
48.5
0.774 ± 0.039
65
14.2
22.8
17.5
63.3 ± 2.5
48.6
0.763 ± 0.039
70
14.0
22.2
17.2
63.0 ± 2.0
48.8
0.776 ± 0.031
75
13.8
21.7
16.8
63.3 ± 1.8
49.1
0.782 ± 0.028
80
13.7
21.6
16.6
64.5
±
1.8
49.5
0.773
±
0.032
85
13.7
21.3
16.4
65.0
±
2.0
50.0
0.777
±
0.029
90
13.6
21.3
16.2
50.5
66.3
±
2.9
0.767
±
0.043
(20:0)
2
PE
99
15.7
25.3
21.1
55.7
±
3.3
46.4
0.845
±
0.038
(O - 12:0)
2
PE
135
15.8
26.4
16.0
104.0 ± 4.0
63.2
0.114 ± 0.090
Source
: Marsh (2011) .
a
The last column contains the calculated ratios between the pivotal volume,
V
p
, to the respective
volume of molecule,
V
l
.
TABLE 3.2 Comparison between the Intercylinder Distance, Derived from
NMR and X-ray Diffraction, for Different Mixtures of POPE/POPC and
Different Temperatures
a
Mixture and Temperature
α
(X ray) ( Å )
α
(NMR) ( Å )
α
I
*
( Å )
POPE:POPC (91:09); 30 ° C
91.2
89.3
12.0
POPE:POPC (91:09); 40 ° C
86.7
85.7
11.8
POPE:POPC (91:09); 60 ° C
79.8
80.7
11.4
POPE:POPC (82:18); 20 ° C
103.0
102.1
12.3
POPE:POPC (82:18); 30 ° C
96.5
95.7
12.0
POPE:POPC (82:18); 40 ° C
91.7
90.7
11.7
POPE:POPC (82:18); 50 ° C
87.9
88.3
11.5
POPE:POPC (82:18); 60 ° C
84.5
85.0
11.3
POPE:POPC (82:18); 70 ° C
81.7
82.4
11.2
POPE:POPC (68:32); 40 ° C
104.8
107.0
11.9
Source
: Lafl eur et al. (1996).
a
The values in the third column are used in Eq. (3.5).
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