Three-dimensional photochemical microfabrication of poly(3,4-ethylene- dioxythiophene) in transparent polymer sheet

• Published in: Thin Solid Films Vol. 554; pp. 102 - 105
• Main Authors: Yamada, Katsumi, Yamada, Yumiko, Sone, Junji
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.03.2014; Elsevier BV; Elsevier
• Subjects: 3D micropattern; Condensed matter: structure, mechanical and thermal properties; Electrode potentials; Exact sciences and technology; Femtosecond; Lasers; Multi-photon sensitized polymerization; Other nonelectronic physical properties; Photochemical; Physical properties of thin films, nonelectronic; Physics; Poly(3,4-ethylenedioxythiophene); Polymerization; Scanning; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Thin films; Three dimensional; Multi-photon sensitized polymerization; Poly(3,4-ethylenedioxythiophene); 3D micropattern; Ethylene; Polymerization; Ruthenium complexes; Thin films; Thiophene derivative polymer; Photopolymerization; Oxidation; Thiophene polymer; Redox potential; Polymers; Photosensitizer
• ISSN: 0040-6090; 1879-2731
• DOI: 10.1016/j.tsf.2013.08.023

A dimeric compound of 3,4-ethylenedioxythiophene was polymerized to form poly(3,4-ethylenedioxythiophene) by multi-photon sensitized polymerization using a femtosecond laser. In contrast, photopolymerization could not be achieved using 3,4-ethylenedioxythiophene as the starting material, because it has a more positive oxidation peak potential compared to the redox potential of the tris(2,2′-bipyridyl)ruthenium complex used as the photosensitizer. Furthermore, three-dimensional micropatterns of poly(3,4-ethylenedioxythiophene) could be produced in a transparent polymer sheet by scanning the laser focal point. •Multi-photon sensitized polymerization of 3,4-ethylenedioxythiophene (EDOT).•Three-dimensional microstructures of poly(EDOT) in the transparent polymer sheet.•The dimeric compound of EDOT was employed as the starting material.•The lateral precision of this system exceeded the diffraction limit.