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Supplementary materials
The influence of the electrosynthesis conditions on the spontaneous release of anti-
inflammatory salicylate during degradation of polypyrrole coated iron for
biodegradable cardiovascular stent
Karolina Cysewska 1,*, Jakub Karczewski 2,Piotr Jasiński 1
1 Faculty of Electronics, Telecommunications and Informatics, Gdansk University of
Technology, ul. Narutowicza 11/12, 80-233 Gdansk, Poland
2 Faculty of Applied Physics and Mathematics, Gdansk University of Technology,
ul. Narutowicza 11/12, 80–233 Gdansk, Poland
Figure A. Linear scan voltammetry of bare iron in 0.1 M sodium salicylate or in 0.1 M
sodium salicylate and 0.1 M pyrrole with a scan rate of 20 mV·s -1 from -0.35 to 1.6 V vs.
Ag/AgCl.
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Figure B. Cross-sectional SEM image of PPy coated iron synthesized in the presence of
sodium salicylate with electropolymerization time limited by a charge of 2.11 C·cm-2 (a) and
6.37 C·cm- 2 (b).
Figure C. EDX elemental analysis of PPy coated iron electrosynthesized in aqueous solution
of 0.1 M Py and 0.1 M sodium salicylate.
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Figure D. Calibration curves of sodium salicylate.
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Figure E. Evolution of the absorbance at 230 nm (a) and concentration of salicylate released
(b) over the immersion time for different electrodeposition charge Qd.
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Figure F. Evolution of the absorbance at 230 nm (a) and concentration of salicylate released
(b) over the immersion time for different sodium salicylate concentration.
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Figure G. Evolution of the absorbance at 230 nm (a) and concentration of salicylate released
(b) over the immersion time for different pyrrole concentration.
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Figure H. Linear approximation of concentration of salicylate released vs. immersion time (t)
for 1 ≤ t ≤ 2 (a), 5 ≤ t ≤ 9 (b) and 15 ≤ t ≤ 21 (c) (different sodium salicylate concentration).
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Figure I. Linear approximation of concentration of salicylate released vs. immersion time (t)
for 1 ≤ t ≤ 2 (a), 5 ≤ t ≤ 9 (b) and 15 ≤ t ≤ 21 (c) (different deposition charge).
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Figure J. Linear approximation of concentration of salicylate released vs. immersion time (t)
for 1 ≤ t ≤ 2 (a), 5 ≤ t ≤ 9 (b) and 15 ≤ t ≤ 21 (c) (different pyrrole concentration).