Ag/poly(pyrrole) (Ag/PPy) composite nanoparticles were successfully prepared using poly(4-styrenesulfonic acid-co-maleic acid) sodium salt (PSSMA) or poly(N-vinylpyrrolidone) (PVP) as a polymeric stabilizer via one-pot oxidative polymerization in an aqueous medium. During the polymerization, pyrrole monomer is polymerized into PPy at the aggregates of the polymeric stabilizers by Ag+ ions, and which are reduced to Ag0 metal state by pyrrole with coordination bonding between the polymeric stabilizers and Ag+ ions. UV-vis spectrophotometry confirmed that the coordination complex affected the reduction rate of Ag+ ions and the reduction rate of Ag+ ions in PSSMA system was slower than that of PVP due to the electron withdrawing nature of PSSMA. Effect of the structural difference between PVP and PSSMA on the morphology and electrical conductivity of Ag/PPy composite nanoparticles was studied and compared.
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation (NRF) grant funded by the Korea government (MEST) through the Active Polymer Center for Pattern Integration (No. R11-2007-050-00000-0) and a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea (K0006005). This research was supported by the Nano R&D program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (2009-0083233), the Pioneer Research Center Program though the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (No. 2010-0019308), Mid-career Researcher Program through NRF grant funded by the MEST (No. 2007-0052622 ), and the Research Fund, 2010 of The Catholic University of Korea.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry