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Choi, Eun Jung,Shin, Jisoo,Khaleel, Zinah Hilal,Cha, Inhwan,Yun, Sang-Ho,Cho, Seung-Woo,Song, Changsik The Royal Society of Chemistry 2015 Polymer chemistry Vol.6 No.24
<▼1><P>Electroconductive hydrogels are composed of 3-dimensionally structured hydrogels and conducting molecules with electrical, optical, and reversible redox properties.</P></▼1><▼2><P>Electroconductive hydrogels are composed of 3-dimensionally structured hydrogels and conducting molecules with electrical, optical, and reversible redox properties. These hybrid materials can be utilized as electrically-stimulated biomaterials in implantable biosensors or drug delivery systems. In this study, carbon nanotube-incorporated polyvinyl alcohol (PVA)-based hydrogels were synthesized by an electro-click reaction, which was controlled by an electrochemically generated Cu(i) catalyst. When the reduction potential of Cu(ii) ions was applied, PVA-based hydrogels were deposited onto indium-tin-oxide-coated glass electrodes <I>via</I> Cu(i)-catalysed alkyne–azide cycloaddition (click reaction). When the hydrogels contained carbon nanotubes, thicker films were deposited because the embedded carbon nanotubes provided a larger electrochemical active area. In addition, the carbon nanotubes improved the electrical conductivity of the hydrogel systems. We investigated the electro-stimulated drug release behaviour with electro-click conductive hydrogels using tetracycline as a model drug.</P></▼2>