Fabrication of Polythiophene Patterns through Blending of a Thermally Curable Polythiophene with Poly（methyl methacrylate） and Selective Thermal Curation

In this study, we demonstrate a novel method for fabricating polythiophene patterns, i.e., cylindrical holes andcylinders, through blending of a thermally curable polythiophene carrying with tertiary ester groups （PT-tert-ESTER） andpoly（methyl methacrylate） （PMMA）, followed by thermal conversion of...

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Bibliographic Details
Published in:高分子科学：英文版 2017, Vol.35 (3), p.422-433
Main Author: Mushtaque A. Memon Jin-hua Sun Hee-Tae Jung Shou-ke Yan Jian-xin Geng
Format: Article
Language:English
Subjects:
Blending
Cylinders
Cylindrical
holes
Patterns
Polythiophene
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Summary:In this study, we demonstrate a novel method for fabricating polythiophene patterns, i.e., cylindrical holes andcylinders, through blending of a thermally curable polythiophene carrying with tertiary ester groups （PT-tert-ESTER） andpoly（methyl methacrylate） （PMMA）, followed by thermal conversion of the PT-tert-ESTER to an insoluble polythiophenevia low-temperature cleavage of the tertiary ester groups and removal of the PMMA component via ultraviolet degradation.We show that the surface polarity of substrates, the mass ratio of PT-tert-ESTER to PMMA in the blend solutions as well asthe concentration of the blend solutions strongly influence the formation of the polythiophene pattems. Cylindrical holes aremore readily formed on less polar substrates when a PT-tert-ESTER dominated blend solution is used, while cylinders aremore readily formed on more polar substrates when a PMMA dominated blend solution is used. Moreover, the diameters ofboth the cylindrical holes and the cylinders decrease as the PT-tert-ESTER concentration is increased in the respective rangesof the PT-tert-ESTER/PMMA ratios where the patterns are formed. Grazing incident X-ray diffraction data have indicatedthat the patterning of the PT-tert-ESTER component in the blend films improves the crystallinity of PT-tert-ESTER as wellas the molecular packing of the insoluble polythiophene in the resultant patterned polythiophene films.
ISSN:0256-7679
1439-6203