Synthesis, Characterization and Electrical Conductivity of Poly(p-phenylene vinylene)

Ali ÇIRPAN; Zuhal KÜÇÜKYAVUZ; Savaş KÜÇÜKYAVUZ

Article Details

Synthesis, Characterization and Electrical Conductivity of Poly(p-phenylene vinylene)

Authors:

Ali ÇIRPAN | Zuhal KÜÇÜKYAVUZ | Savaş KÜÇÜKYAVUZ

Publisher:

TUBITAK

Journal:

Turkish Journal of Chemistry 2003 Vol.27 Issue 2, pp.135-144

Document Type:

Article

Publication Date:

1/2003

Document Language:

Turkish

Document ID (Org No.):

2000729605

Frequency:

Bimonthly

eISSN:

1303-6130

pISSN:

1300-0527

Abstract:

 

Poly(p-phenylene vinylene) (PPV) was prepared  electrochemically from p-xylene-bis(diethylsulphonium chloride) in a  solvent-electrolyte couple of acetonitrile-tetrabutylammonium  tetrafluoroborate (TBAFB).  The polymer obtained from the electrode  surface was converted to PPV by the thermal elimination of diethyl  sulfide, HCl and ethyl sulfide.  PPV was also obtained chemically in  order to investigate the effect of the synthetic method on the  structure and electrical conductivity.  The characterization of the  polymers was carried out by means of fourier transform infrared  spectrometer (FTIR), differential scanning calorimetry (DSC) and  thermal gravimetry analysis (TGA) techniques.  The doping effect on  the conductivity of the PPV was investigated by using different agents  such as H2SO4, I2 and metallic Na.  It was concluded from the results of spectroscopical investigations  that trans-vinylene units are formed on the backbones of polymers  obtained by both chemical and electrochemical methods.  Thermal  analysis data confirmed that the thermal elimination of diethyl  sulfide from the polymers obtained by electrochemical and chemical  methods are almost complete, and therefore, the resultant product is  PPV. It was evident from the TGA results that the polymer obtained  chemically had a thermal stability higher than the electrochemically  prepared polymer.  Although the polymers obtained were insoluble and insulating, they  were successfully converted into conducting polymers with the maximum  conductivity of 10-3 S/cm by doping in solution or in vapor.

 

Poly(p-phenylene vinylene) (PPV) was prepared  electrochemically from p-xylene-bis(diethylsulphonium chloride) in a  solvent-electrolyte couple of acetonitrile-tetrabutylammonium  tetrafluoroborate (TBAFB).  The polymer obtained from the electrode  surface was converted to PPV by the thermal elimination of diethyl  sulfide, HCl and ethyl sulfide.  PPV was also obtained chemically in  order to investigate the effect of the synthetic method on the  structure and electrical conductivity.  The characterization of the  polymers was carried out by means of fourier transform infrared  spectrometer (FTIR), differential scanning calorimetry (DSC) and  thermal gravimetry analysis (TGA) techniques.  The doping effect on  the conductivity of the PPV was investigated by using different agents  such as H2SO4, I2 and metallic Na.  It was concluded from the results of spectroscopical investigations  that trans-vinylene units are formed on the backbones of polymers  obtained by both chemical and electrochemical methods.  Thermal  analysis data confirmed that the thermal elimination of diethyl  sulfide from the polymers obtained by electrochemical and chemical  methods are almost complete, and therefore, the resultant product is  PPV. It was evident from the TGA results that the polymer obtained  chemically had a thermal stability higher than the electrochemically  prepared polymer.  Although the polymers obtained were insoluble and insulating, they  were successfully converted into conducting polymers with the maximum  conductivity of 10-3 S/cm by doping in solution or in vapor.

Article Details

Synthesis, Characterization and Electrical Conductivity of Poly(p-phenylene vinylene)

Authors: Ali ÇIRPAN | Zuhal KÜÇÜKYAVUZ | Savaş KÜÇÜKYAVUZ

Publisher: TUBITAK

Journal: Turkish Journal of Chemistry 2003 Vol.27 Issue 2, pp.135-144

Document Type: Article

Publication Date: 1/2003

Document Language: Turkish

Document ID (Org No.): 2000729605

Frequency: Bimonthly

eISSN: 1303-6130

pISSN: 1300-0527

Issues

Authors:

Ali ÇIRPAN | Zuhal KÜÇÜKYAVUZ | Savaş KÜÇÜKYAVUZ

Publisher:

TUBITAK

Journal:

Turkish Journal of Chemistry 2003 Vol.27 Issue 2, pp.135-144

Document Type:

Article

Publication Date:

1/2003

Document Language:

Turkish

Document ID (Org No.):

2000729605

Frequency:

Bimonthly

eISSN:

1303-6130

pISSN:

1300-0527