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JIAHUAN GU1, JIAN LI1,* , CHENYI WANG1, QIANG REN1
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering; Department of Materials Chemistry, Faculty of Materials Science and Engineering, Changzhou University, Changzhou, Jiang
In this study, we have successfully synthesized a poly(3,4-ethylenedioxythiophene): poly(sodium styrene sulfonate)-graft-poly(ethylene glycol) (PEDOT:PSS-g-PEG) aqueous dispersion with enhanced film conductivity. A graft copolymer template of poly(sodium styrene sulfonate)-graft-poly(ethylene glycol) was synthesized via free radical polymerization of sodium styrene sulfonate and allyl polyethylene glycol. Stable PEDOT water dispersions with low surface tension were successfully synthesized using PSS-g-PEG as a template and hexafluorobutanol (HFB) as a polymerization additive. Results showed that the poly(sodium styrene sulfonate)-graft-poly(ethylene glycol) when used as the template increased the stability of PEDOT water dispersion and lowered the surface tension. And HFB lowered the polymerization rate of EDOT. The conductivity and transparency of PEDOT films can be increased with HFB as a polymerization additive. The square resistance of PEDOT:PSS-g-PEG film with HFB was about 34 times lower than that of PEDOT: PSS-g-PEG film without HFB. The improvement of conductivity can be attributed to the better phase separation between PEDOT and PSS-g-PEG and HFB enhanced this phase separation..
PEDOT, PSS copolymer, Conductivity, Hexafluorobutanol.
Submitted at: Jan. 24, 2017
Accepted at: Oct. 10, 2017
JIAHUAN GU, JIAN LI, CHENYI WANG, QIANG REN, Improved performance of PEDOT aqueous dispersion and film with poly (sodium styrene sulfonate) graft poly (ethylene glycol) as a template and hexafluorobutanol as a polymerization additive, Journal of Optoelectronics and Advanced Materials Vol. 19, Iss. 9-10, pp. 670-676 (2017)
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