Materials 2014, 7(1), 195-205; doi:10.3390/ma7010195
Article

Preparation of Fe3O4-Embedded Poly(styrene)/Poly(thiophene) Core/Shell Nanoparticles and Their Hydrogel Patterns for Sensor Applications

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Received: 30 November 2013; in revised form: 26 December 2013 / Accepted: 27 December 2013 / Published: 2 January 2014
(This article belongs to the Special Issue Nanocomposites of Polymers and Inorganic Particles 2013)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: This research describes the preparation and sensor applications of multifunctional monodisperse, Fe3O4 nanoparticles-embedded poly(styrene)/poly(thiophene) (Fe3O4-PSt/PTh), core/shell nanoparticles. Monodisperse Fe3O4-PSt/PTh nanoparticles were prepared by free-radical combination (mini-emulsion/emulsion) polymerization for Fe3O4-PSt core and oxidative seeded emulsion polymerization for PTh shell in the presence of FeCl3/H2O2 as a redox catalyst, respectively. For applicability of Fe3O4-PSt/PTh as sensors, Fe3O4-PSt/PTh-immobilized poly(ethylene glycol) (PEG)-based hydrogels were fabricated by photolithography. The hydrogel patterns showed a good sensing performance under different H2O2 concentrations. They also showed a quenching sensitivity of 1 µg/mL for the Pd2+ metal ion within 1 min. The hydrogel micropatterns not only provide a fast water uptake property but also suggest the feasibility of both H2O2 and Pd2+ detection.
Keywords: polythiophene; nanoparticles; fluorescence; sensor; hydrogel patterns
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MDPI and ACS Style

Kim, Y.S.; Lee, H.J.; Govindaiah, P.; Son, W.; Koh, W.-G.; Cheong, I.W.; Kim, J.H. Preparation of Fe3O4-Embedded Poly(styrene)/Poly(thiophene) Core/Shell Nanoparticles and Their Hydrogel Patterns for Sensor Applications. Materials 2014, 7, 195-205.

AMA Style

Kim YS, Lee HJ, Govindaiah P, Son W, Koh W-G, Cheong IW, Kim JH. Preparation of Fe3O4-Embedded Poly(styrene)/Poly(thiophene) Core/Shell Nanoparticles and Their Hydrogel Patterns for Sensor Applications. Materials. 2014; 7(1):195-205.

Chicago/Turabian Style

Kim, Yong S.; Lee, Hyun J.; Govindaiah, Patakamuri; Son, Woohyun; Koh, Won-Gun; Cheong, In W.; Kim, Jung H. 2014. "Preparation of Fe3O4-Embedded Poly(styrene)/Poly(thiophene) Core/Shell Nanoparticles and Their Hydrogel Patterns for Sensor Applications." Materials 7, no. 1: 195-205.


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