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Highly Fluorescent Conducting Polymer Hybrid Materials Based on Polyaniline-Polyethylene Glycol-Arsenic Sulphide


Affiliations
1 Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, India
 

Highly fluorescent binary and ternary hybrid materials based on polyaniline, polyethylene glycol (PEG) and arsenic sulphide have been prepared via oxidative chemical polymerization and characterized by FT-IR and powder X-ray diffraction techniques. Thermogravimetric analysis showed that all the materials are thermally stable up to 250°C. The optical behaviour was investigated using UV-Vis. and fluorescence spectroscopy. Fluorescence spectra of polyaniline and its hybrids were found to be concentration dependent, and concentrations were optimized to achieve maximum intensity of emission. Aggregation caused quenching (ACQ) may be the possible reason for concentration dependent emission. Hybrids showed significantly enhanced fluorescence than polyaniline. The AC electrical conductivity was also measured and found to be better for hybrids than the polyaniline. In the PAni-PEG-As2S3 hybrid, the conductivity was found to be 9.57 × 10−1 S/cm at 100 KHz. This valuable improvement in luminescent property and conducting behaviour may be useful in various optoelectronic and electronic applications.

Keywords

Polyaniline Hybrids, Fluorescence, Aggregation Caused Quenching (ACQ), Electrical Conductivity, Opto-Electronic Applications.
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  • Highly Fluorescent Conducting Polymer Hybrid Materials Based on Polyaniline-Polyethylene Glycol-Arsenic Sulphide

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Authors

Vivek Kumar Singh
Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, India
Amit Singh
Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, India
Vinod Kumar Gupta
Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, India
Ram Adhar Singh
Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, India

Abstract


Highly fluorescent binary and ternary hybrid materials based on polyaniline, polyethylene glycol (PEG) and arsenic sulphide have been prepared via oxidative chemical polymerization and characterized by FT-IR and powder X-ray diffraction techniques. Thermogravimetric analysis showed that all the materials are thermally stable up to 250°C. The optical behaviour was investigated using UV-Vis. and fluorescence spectroscopy. Fluorescence spectra of polyaniline and its hybrids were found to be concentration dependent, and concentrations were optimized to achieve maximum intensity of emission. Aggregation caused quenching (ACQ) may be the possible reason for concentration dependent emission. Hybrids showed significantly enhanced fluorescence than polyaniline. The AC electrical conductivity was also measured and found to be better for hybrids than the polyaniline. In the PAni-PEG-As2S3 hybrid, the conductivity was found to be 9.57 × 10−1 S/cm at 100 KHz. This valuable improvement in luminescent property and conducting behaviour may be useful in various optoelectronic and electronic applications.

Keywords


Polyaniline Hybrids, Fluorescence, Aggregation Caused Quenching (ACQ), Electrical Conductivity, Opto-Electronic Applications.