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Solvent Induced Phenomena
in a Dendronized Linear Polymer
Anja Kroeger(a)*, Baozhong Zhang(b), Christine Rosenauer(a), A. Dieter Schlüter(b), Gerhard
Wegner(a)
(a)
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
(b)
Laboratory of Polymer Chemistry, Department of Materials, ETH Zurich, Wolfgang-
Pauli-Strasse 10, HCI J541, 8093 Zurich, Switzerland
*E-mail: [email protected], Tel. +49 (0) 6131 379 307, Fax +49 (0) 6131 379 100
Electronic Supplementary Material
1
Additional figures
3.0x10
-7
7
MW = 2.3 10 g mol
-1
RG = 135 nm
-9
3
Kc/R(q) / mol g
-1
A2 = 3 10 mol dm g
2.0x10
-7
1.0x10
-7
0.0
0.0
2.0x10
2
3
4.0x10
3
-2
6.0x10
3
-2
q + kc / µm
Fig. SI-1 Zimm diagram of sample PG4 in chloroform at T = 25 °C.
2
2
T = 40 °C
RG = 112 nm
T = 25 °C
RG = 85 nm
-1
c R(q) / cm g ml
-1
3
lp = 8 nm
lp = 7 nm
1
0
0.0
2.0x10
10
4.0x10
2
10
q / cm
6.0x10
10
8.0x10
10
-2
Fig. SI-2 Ornstein-Zernike representation of the light scattering intensity of PG4 in dioxane with
c = 1 g L-1 at T = 25 (black) and 40 °C (red). The persistence length lp of the wormlike molecules
are obtained in the linear regime; the influence of a minor fraction of aggregated molecules (seen
at low q-values) is neglected, which is not the case for the data evaluation via the Zimm method.
3
Fig. SI-3 Normalized field correlation function C(q, t) of sample PG4 in dioxane with a
concentration of c = 1 gL-1 at a scattering wave vector q = 1.997  10-2 nm-1 at T = 25 °C along
with the corresponding KWW fit characterized by a shape parameter β = 0.85 as well as the
distribution of relaxation times Hτ(ln τ) resulting from a CONTIN analysis. The diffusion
coefficient D0 is obtained from the intercept of the linear variation of D = Γ/q2 as a function of
q2, as shown in the inset.
4
2
-1
c R(q) / cm g ml
-1
3
24 °C
26 °C
28 °C
30 °C
35 °C
40 °C
45 °C
1
0
0.0
2.0x10
10
4.0x10
2
10
6.0x10
q / cm
10
8.0x10
10
-2
Fig. SI-4 Ornstein-Zernike representation of the light scattering intensity of PG4 in toluene with
c = 1 g L-1 at different T. The persistence length lp of the wormlike molecules are obtained in the
linear regime (fits not shown); the influence of a fraction of aggregated molecules (seen at low qvalues) is neglected, which is not the case for the data evaluation via the Zimm method.
5
2
-1
c R(q) / cm g ml
-1
3
16°C
20°C
22°C
26°C
30°C
35°C
40°C
1
0
0.0
2.0x10
10
4.0x10
2
10
q / cm
6.0x10
10
8.0x10
10
-2
Fig. SI-5 Ornstein-Zernike representation of the light scattering intensity of PG4 in a solvent
mixture of toluene with 10 vol.% dioxane with c = 1 g L-1 at different T.
6
Fig. SI-6 Schematic representation of the potential energy of interactions W as a function of the
distance H between segments of a DP.
7
Table SI-1. Characteristics of PG4 dissolved in toluene depending on temperature.
T
RG a)
Rh a)
lp a)
<RG>/<Rh>
in °C
in nm
in nm
in nm
in nm
24
51.7
33.5
5.5
1.54
25
53.5
32.1
5.6
1.67
26
72.4
50.0
6.5
1.45
28
85.1
50.1
7.0
1.70
30
78.9
46.4
6.7
1.70
35
74.6
48.3
6.6
1.54
40
65.4
33.7
6.1
1.94
45
59.2
29.6
5.8
2.00
____________________
a) The experimental error determined from standard deviation is of the order of 2 percent.
8
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