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Published on: February 6, 2016
Bacterial cellulose-poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) composites for optoelectronic
Shaukat Khan1, Mazhar Ul-Islam2, Waleed Ahmad Khattak1
1Department of Chemical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea.
Abstract:
Electrically conducting bacterial cellulose (BC) membranes were prepared by ex situ incorporation of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (
Pedot:
PSS) into BC pellicles. The BC pellicles were immersed into an aqueous solution of
Pedot:
PSS for 6, 12, 18, or 24h, and the resultant composites were vacuum dried at ambient temperature. The structural features of the composites were determined using X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM), Fourier-transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD). XPS confirmed synthesis of the composites, and SEM showed uniform incorporation of
Pedot:
PSS into the BC matrix. The FTIR spectra of the composites exhibited characteristic bands for both BC and
Pedot:
PSS, and XRD analysis showed a slight decrease in crystallinity during composite preparation. The electrical conductivity of the composites was 12.17S/cm for incorporation of 31.24 wt%
Pedot:
PSS into the BC matrix. These highly conducting BC-PEDOT:PSS composites are expected to find potential applications in optoelectronic devices such as biosensors, organic light-emitting diodes, and solar cells.
