Self-assembled semiconducting, paramagnetic polyaniline nanotubes have been synthesized by the oxidative polymerization of aniline with ammonium peroxydisulfate in aqueous medium in the presence of colloidal silica particles of an average diameter ∼12 nm, without added acid. The electrical conductivity of polyaniline nanotubes/silica nanocomposites is in the range (3.3-4.0) × 10-3 S cm-1. The presence of paramagnetic polaronic emeraldine salt form of polyaniline and phenazine units in nanocomposites was proved by FTIR, Raman, and EPR spectroscopies. The influence of the initial silica/aniline weight ratio on the morphology of polyaniline/silica nanocomposites was studied by scanning and transmission electron microscopies. Nano-composites synthesized by using the initial weight ratio silica/aniline ≤0.2 contain polyaniline nanotubes which have a typical outer diameter of 100-250 nm and an inner diameter of 10-80 nm, and nanorods with a diameter of 60-100 nm, accompanied with polyaniline.../silica nanogranules, while the nanocomposite synthesized at weight ratio silica/aniline ∼2 contains polyaniline/silica nanogranules with an average diameter of 35-70 nm. The evolution of molecular and supramolecular structure of polyaniline in the presence of colloidal silica is discussed.
Source:
Journal of Physical Chemistry B, 2009, 113, 20, 7116-7127
TY - JOUR
AU - Ciric-Marjanovic, G.
AU - Dragičević, Ljiljana
AU - Milojević, M.
AU - Mojović, Miloš
AU - Mentus, Slavko
AU - Dojčinović, Biljana
AU - Marjanović, B.
AU - Stejskal, J.
PY - 2009
UR - http://cer.ihtm.bg.ac.rs/handle/123456789/563
AB - Self-assembled semiconducting, paramagnetic polyaniline nanotubes have been synthesized by the oxidative polymerization of aniline with ammonium peroxydisulfate in aqueous medium in the presence of colloidal silica particles of an average diameter ∼12 nm, without added acid. The electrical conductivity of polyaniline nanotubes/silica nanocomposites is in the range (3.3-4.0) × 10-3 S cm-1. The presence of paramagnetic polaronic emeraldine salt form of polyaniline and phenazine units in nanocomposites was proved by FTIR, Raman, and EPR spectroscopies. The influence of the initial silica/aniline weight ratio on the morphology of polyaniline/silica nanocomposites was studied by scanning and transmission electron microscopies. Nano-composites synthesized by using the initial weight ratio silica/aniline ≤0.2 contain polyaniline nanotubes which have a typical outer diameter of 100-250 nm and an inner diameter of 10-80 nm, and nanorods with a diameter of 60-100 nm, accompanied with polyaniline/silica nanogranules, while the nanocomposite synthesized at weight ratio silica/aniline ∼2 contains polyaniline/silica nanogranules with an average diameter of 35-70 nm. The evolution of molecular and supramolecular structure of polyaniline in the presence of colloidal silica is discussed.
PB - American Chemical Society (ACS)
T2 - Journal of Physical Chemistry B
T1 - Synthesis and characterization of self-assembled polyaniline nanotubes/silica nanocomposites
VL - 113
IS - 20
SP - 7116
EP - 7127
DO - 10.1021/jp900096b
UR - Conv_4205
ER -
@article{
author = "Ciric-Marjanovic, G. and Dragičević, Ljiljana and Milojević, M. and Mojović, Miloš and Mentus, Slavko and Dojčinović, Biljana and Marjanović, B. and Stejskal, J.",
year = "2009",
abstract = "Self-assembled semiconducting, paramagnetic polyaniline nanotubes have been synthesized by the oxidative polymerization of aniline with ammonium peroxydisulfate in aqueous medium in the presence of colloidal silica particles of an average diameter ∼12 nm, without added acid. The electrical conductivity of polyaniline nanotubes/silica nanocomposites is in the range (3.3-4.0) × 10-3 S cm-1. The presence of paramagnetic polaronic emeraldine salt form of polyaniline and phenazine units in nanocomposites was proved by FTIR, Raman, and EPR spectroscopies. The influence of the initial silica/aniline weight ratio on the morphology of polyaniline/silica nanocomposites was studied by scanning and transmission electron microscopies. Nano-composites synthesized by using the initial weight ratio silica/aniline ≤0.2 contain polyaniline nanotubes which have a typical outer diameter of 100-250 nm and an inner diameter of 10-80 nm, and nanorods with a diameter of 60-100 nm, accompanied with polyaniline/silica nanogranules, while the nanocomposite synthesized at weight ratio silica/aniline ∼2 contains polyaniline/silica nanogranules with an average diameter of 35-70 nm. The evolution of molecular and supramolecular structure of polyaniline in the presence of colloidal silica is discussed.",
publisher = "American Chemical Society (ACS)",
journal = "Journal of Physical Chemistry B",
title = "Synthesis and characterization of self-assembled polyaniline nanotubes/silica nanocomposites",
volume = "113",
number = "20",
pages = "7116-7127",
doi = "10.1021/jp900096b",
url = "Conv_4205"
}
Ciric-Marjanovic, G., Dragičević, L., Milojević, M., Mojović, M., Mentus, S., Dojčinović, B., Marjanović, B.,& Stejskal, J.. (2009). Synthesis and characterization of self-assembled polyaniline nanotubes/silica nanocomposites. in Journal of Physical Chemistry B
American Chemical Society (ACS)., 113(20), 7116-7127.
https://doi.org/10.1021/jp900096b
Conv_4205
Ciric-Marjanovic G, Dragičević L, Milojević M, Mojović M, Mentus S, Dojčinović B, Marjanović B, Stejskal J. Synthesis and characterization of self-assembled polyaniline nanotubes/silica nanocomposites. in Journal of Physical Chemistry B. 2009;113(20):7116-7127.
doi:10.1021/jp900096b
Conv_4205 .
Ciric-Marjanovic, G., Dragičević, Ljiljana, Milojević, M., Mojović, Miloš, Mentus, Slavko, Dojčinović, Biljana, Marjanović, B., Stejskal, J., "Synthesis and characterization of self-assembled polyaniline nanotubes/silica nanocomposites" in Journal of Physical Chemistry B, 113, no. 20 (2009):7116-7127,
https://doi.org/10.1021/jp900096b .,
Conv_4205 .
