Abstract
Here we present additional data regarding specific doping process in nanoparticle samples of PANI. In such technique, the ionizing γ-irradiation and (dodecylbenzenesulfonic acid), DBSA were being used as dopants and as accelerators to the oxidizing agent to polymerize aniline monomer into conductive PANI Emeraldine Salt (ES), in which PANI was produced from its monomer by this noble methodology by a single-step process. In such synthesis technique, the interactions promote a more extended conformation of PANI chains, which leads to the improvement in solubility, the thermal stability and conductivity. Hence the dielectric and optical properties of PANI nanoparticles could be improved tremendously by incorporation of a long-chain organic acid (DBSA) as the dopant ion under the influence of γ-irradiation. It was also expected that the single step, direct double doping procedure (γ-ray and DBSA) could be used for synthesizing these nanomaterials with different long-chain dopant ions instead of the standard route of synthesizing, to avoid tedious steps involved like de-doping, re-doping etc.
Highlights
Polymer systems with unique properties are the recent fields of increasing scientific and technical interest, offering the opportunity to synthesize a broad variety of promising new materials, with a wide range of electrical, optical and magnetic property
This result will create another type of defect called bipolaron, with the presence of Dodecyl Benzene-Sulfonic Acid (DBSA) in the feed this could cause over oxidized which leads to form PANI nanoparticles in its Emeraldine Salt (ES) form, which is the conductive form of PANI
We have explored how γ-irradiation techniques in the presence of protonated DBSA can syntheses and enhance the conducting and optical properties of the synthesized composites
Summary
Polymer systems with unique properties are the recent fields of increasing scientific and technical interest, offering the opportunity to synthesize a broad variety of promising new materials, with a wide range of electrical, optical and magnetic property. As a rule, this process is referred to as doping. The exposure of polymers to γ-radiation induces structural defects and degradation of initial structure by scission and emission of atoms, molecules and molecular fragments (Gasaymeh et al, 2010a; 2010b; Khanna et al, 2005; Ravinder et al, 2008; Virk and Srivastava, 2001) It generates a number of charged species, ions and free radicals and induces either scission or cross-linking or both. The radiation technique has proven to be an environmentally benign and low-cost method for preparation of a large quantity of size and structure controllable metal nanoparticles (Bae and Jang, 2012; Gasaymeh et al, 2010a; Belloni, 2005; Gasaymeh et al, 2010c), in addition, our obtained result is much better than those prepared with other techniques
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