TY - JOUR
T1 - Simultaneous synthesis of silver nanoparticles and poly(2,5- dimethoxyaniline) in poly(styrene sulfonic acid)
AU - Huang, Li Ming
AU - Tsai, Ching Chun
AU - Wen, Ten Chin
AU - Gopalan, A.
PY - 2006/6/15
Y1 - 2006/6/15
N2 - Silver nanoparticles were formed in situ along with poly(2,5- dimethoxyaniline) (PDMA) in an interconnected network matrix (reactor), comprising the electronic conductive polymer, PDMA, and a polyelectrolyte, poly(styrene sulfonic acid) (PSS), through the simultaneous reduction of Ag + ions and polymerization of 2,5-dimethoxyaniline. In situ ultraviolet-visible spectroscopy showed that peaks corresponding to the plasmon resonance of silver nanoparticles at 411 nm and the polaronic transition of PDMA at 438 nm provided evidences for the simultaneous formation of silver nanoparticles and PDMA. Transmission electron microscopy and size distribution analysis revealed the presence of spherical silver nanoparticles with an average diameter of 12 nm in the composite. X-ray photoelectron spectroscopy showed that the amine units in PDMA changed to imine units upon the formation of silver nanoparticles. A comprehensive mechanism for the formation of the PDMA-PSS-Ag nanocomposite is proposed. A 10-fold increase in the conductivity was noticed for the PDMA-PSS-Ag nanocomposite (1 S/cm) in comparison with the PDMA-PSS compos ite (0.1 S/cm).
AB - Silver nanoparticles were formed in situ along with poly(2,5- dimethoxyaniline) (PDMA) in an interconnected network matrix (reactor), comprising the electronic conductive polymer, PDMA, and a polyelectrolyte, poly(styrene sulfonic acid) (PSS), through the simultaneous reduction of Ag + ions and polymerization of 2,5-dimethoxyaniline. In situ ultraviolet-visible spectroscopy showed that peaks corresponding to the plasmon resonance of silver nanoparticles at 411 nm and the polaronic transition of PDMA at 438 nm provided evidences for the simultaneous formation of silver nanoparticles and PDMA. Transmission electron microscopy and size distribution analysis revealed the presence of spherical silver nanoparticles with an average diameter of 12 nm in the composite. X-ray photoelectron spectroscopy showed that the amine units in PDMA changed to imine units upon the formation of silver nanoparticles. A comprehensive mechanism for the formation of the PDMA-PSS-Ag nanocomposite is proposed. A 10-fold increase in the conductivity was noticed for the PDMA-PSS-Ag nanocomposite (1 S/cm) in comparison with the PDMA-PSS compos ite (0.1 S/cm).
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U2 - 10.1002/pola.21479
DO - 10.1002/pola.21479
M3 - Article
AN - SCOPUS:33745666073
SN - 0887-624X
VL - 44
SP - 3843
EP - 3852
JO - Journal of Polymer Science, Part A: Polymer Chemistry
JF - Journal of Polymer Science, Part A: Polymer Chemistry
IS - 12
ER -