Affiliation:
1. Paichai University
2. Department of Physics Education, Kyungpook National University
3. Pusan National University
4. Seoul national university
5. Department of Chemistry, Sungkyunkwan University
Abstract
Abstract
The synthesis and properties of the poly(3,4-ethylenedioxythiophene):dodecyl sulfate (PEDOT:DS) film are presented and its directed crystallization is described. Iron(III) dodecyl sulfate (Fe(DS)3) multi-lamellar vesicles (MLVs), a newly introduced growth template and a key factor upgrading the vapor-phase polymerization (VPP) of 3,4-ethylenedioxythiophene (EDOT), was used to synthesize a highly conductive, transparent, and mechanically durable film specifically suitable for next-generation flexible electronics. The PEDOT film formed with Fe(DS)3, and doped with DS anions, is highly transparent, metallically conductive (max. ~1.1 × 104 S cm-1), and mechanically highly durable but still flexible. These outstanding physical properties of the VPP-PEDOT film exclusively originate from the MLVs of Fe(DS)3, which have a lamellar superstructure, and simultaneously play several advantageous roles during VPP: a highly effective oxidant without side reactions, a highly efficient in-situ dopant, a template for large-scale crystal growth, and an enhancer of water resistance and durability. The crystal growth of PEDOT is directed by several hundred micrometer-sized lamellar planes of the densely packed Fe(DS)3 surfactant molecules to fabricate a PEDOT:DS co-crystal of approximately the same size. These findings provide a new direction for the synthesis of more conductive, transparent, robust, and flexible polymer electrode materials in future by constructing MLV-type oxidants with a more sophisticated design.
Publisher
Research Square Platform LLC