Supporting information for:
Photo-induced Association Behavior of Poly(sodium acrylate) Bearing
a Small Amount of Malachite Green
Shouta Kousaka, Masanori Ito, and Shin-ichi Yusa
Department of Materials Science and Chemistry, Graduate School of Engineering, University
of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
Correspondence to: S. Yusa (E-mail: yusa@eng.u-hyogo.ac.jp)
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Figure S1.
(a) 1H and (b) 13C NMR spectra for
bis(4-(N,N-dimethylamino)phenyl)(4-vinylphenyl)methyl leucohydroxide (MG monomer) in
DMSO-d6.
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Figure S2.
FT-IR spectrum of bis(4-(N,N-dimethylamino)phenyl)(4-vinylphenyl)methyl
leucohydroxide (MG monomer) (KBr pellet).
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Figure S3.
Decrease in the absorbance at 620 nm for a methanol solution of MG monomer
([MG monomer] = 4.46  10−3 mM) in the dark at 25 °C (○) and 50 ºC ( ) as a function of
time after stopping UV irradiation.
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Figure S4.
Number-average molecular weight (Mn) (○) and conversion (
) as a function of
mole percent (mol %) of MG in the feed for the copolymerization of acrylic acid and MG
monomer in dioxane/water (90/10, v/v) at 60 ºC for 14 h.
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Figure S5.
1
H NMR spectrum of P(A/MG0.05) in D2O at 70 ºC.
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Figure S6.
(a) Changes in the UV-vis absorption spectrum of P(A/MG0.4) at a
concentration of 0.4 g/L in aqueous 0.01 M NaCl at pH 12 upon UV irradiation. The
irradiation times are indicated in the figure.
(b) The absorbance at 620 nm of the solution as
a function of time for several cycles of UV irradiation at 25 ºC for 20 min (○) and thermal
reverse reaction at 50 ºC for 40 min ( ).
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Figure S7.
(a) Changes in the UV-vis absorption spectrum P(A/MG0.05) at a concentration
of 0.4 g/L in pH 9.2 buffer solution upon UV irradiation.
in the figure.
The irradiation times are indicated
(b) The absorbance at 620 nm for this solution as a function of time over
several cycles of UV irradiation at 25 ºC for 20 min (○) and thermal reverse reaction at 50 ºC
for 40 min ( ).
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Figure S8.
Relationship between relaxation rate () and square of the scattering vector (q2)
for P(A/MG0.05) in aqueous solution at pH 12 after heating at 50 ºC in the dark for 40 min in
the presence of 0.01 M NaCl.
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Figure S9.
Hydrodynamic radius (Rh) distributions for (a) PA with Mn = 1.93  104 and (b)
P(A/MAPTAC0.04) with Mn = 2.06  104 at a concentration of 1.0 g/L in 0.01 M NaCl
aqueous solution at pH 12.
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Figure S10.
Angular dependence of KCp/R for P(A/MG0.05) in aqueous solution at pH 12
after heating at 50 ºC in the dark for 40 min in the presence of 0.01 M NaCl.
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