Syntheses and structures of highly soluble bis(ethylenedithio)tetrathiafulvalene molecules with alkyl chains

I. AoyagiDepartment of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguroku, Tokyo152-8552, Japan

M. KatsuharaDepartment of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguroku, Tokyo152-8552, Japan

T. MoriDepartment of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguroku, Tokyo152-8552, Japan

Abstract

Bis(ethylenedithio)tetrathiafulvalene (ET) molecules with one alkyl chain, C_nET (n = 1–6) are synthesiszed. The solubility in usual organic solvents is remarkably improved without changing the electron donating ability, and good thin films are formed by the solution cast method. C₁ET has the same dimer structure as ET, while the structures of the n = 2–4 molecules are composed of zig-zag columns.

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