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|dc.title||Significant different conductivities of the two grades of poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate), Clevios P and clevios PH1000, arising from different molecular weights|
|dc.identifier.citation||Xia, Y., Ouyang, J. (2012-08-22). Significant different conductivities of the two grades of poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate), Clevios P and clevios PH1000, arising from different molecular weights. ACS Applied Materials and Interfaces 4 (8) : 4131-4140. ScholarBank@NUS Repository. https://doi.org/10.1021/am300881m|
|dc.description.abstract||Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is promising to be the next-generation transparent electrode of optoelectronic devices. This paper reports the differences between two commercially available grades of PEDOT:PSS: Clevios P and Clevios PH1000. The as-prepared PEDOT:PSS films from Clevios P and Clevios PH1000 solutions have close conductivities of 0.2-0.35 S cm -1. Their conductivities can be enhanced to 171 and 1164 S cm -1, respectively, through a treatment with hydrofluoroacetone trihydrate (HFA). The differences between Clevios P and Clevios PH1000 were studied by various characterizations on PEDOT:PSS aqueous solutions and PEDOT:PSS films. The gel particles are larger in Clevios PH1000 solution than in Clevios P solution as revealed by dynamic light scattering and fluorescence spectroscopy of pyrene in these solutions. These results suggest that PEDOT of Clevios PH1000 has a higher average molecular weight than that of Clevios P. The difference in the molecular weight of PEDOT for the two grades of PEDOT:PSS is confirmed by the characterizations on their polymer films, including atomic force microscopy and temperature dependences of the resistances of as-prepared and HFAtreated PEDOT:PSS films. The different molecular weights of PEDOT also gives rise to significant differences in the electrochemical behaviors of the two grades of PEDOT:PSS, as revealed by the cyclic voltammetry, in situ UV-vis-NIR absorption spectroscopy and potentiostatic transient measurements. © 2012 American Chemical Society.|
|dc.contributor.department||MATERIALS SCIENCE AND ENGINEERING|
|dc.description.sourcetitle||ACS Applied Materials and Interfaces|
|Appears in Collections:||Staff Publications|
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