Fabrication of Water-Dispersible Polyaniline-Poly(4-styrenesulfonate) Nanoparticles For Inkjet-Printed Chemical-Sensor Applications
✍ Scribed by J. Jang; J. Ha; J. Cho
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 330 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0935-9648
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✦ Synopsis
Polyaniline (PANI) is one of the most promising conducting polymers with enhanced conductivity, good environmental stability, easy control of doping level and conductivity, and diverse color changes corresponding to oxidation levels. [1,2] Much research has been reported on the fabrication of uniform, pure, and nanometer-sized PANI structures in bulk quantities for practical applications such as antistatic coatings, supercapacitors, corrosion protection, chemical sensors, and batteries and energy storage. [4][5][6] However, these investigations have been mainly focused on the manufacture of PANI nanowires or nanofibers excluding sphere-shaped nanoparticles. This might be because of the lack of facile and reliable procedures for preparing high-quality nanometer-sized particles.
Inkjet printing can be an efficient alternative to conventional photolithography in producing versatile micro/nanoelectronic devices because it has advantages such as low cost, high-speed patterning, and applicability to various substrates. [7,8] For example, inkjet-printed conducting-polymer sensors are capable of providing more benefits in terms of mass production, control of sensing dimensions, and flexibility. Nevertheless, most inkjet-printing applications require sophisticated synthetic procedures for preparing monodisperse nanoparticles without particle-particle aggregation in the dispersion medium. Therefore, the development of a simple and reliable method for fabricating highly dispersible conductingpolymer nanoparticles in an aqueous solution is still a challenge.
Recently, functional particles have been prepared by using oppositely charged molecules or polymers for specific applications such as tissue engineering, drug delivery, and antireflection coatings. Herein, we present the fabrication of water-dispersible PANI-poly(4-styrenesulfonate) (PSS) nanoparticles (average diameter = 28 nm) on the basis of electro-