Synthesis and Physicochemical Properties of Dibenzo[2,3- d:2′,3′- d′]anthra[1,2- b:5,6- b′]dithiophene (DBADT) and Its Derivatives: Effect of Substituents on Their Molecular Orientation and Transistor Properties

Keita Hyodo, Shuhei Nishinaga, Yuta Sawanaka, Takumi Ishida, Hiroki Mori, Yasushi Nishihara

    Research output: Contribution to journalArticlepeer-review

    8 Citations (Scopus)

    Abstract

    We have synthesized dibenzo[2,3-d:2′,3′-d′]anthra[1,2-b:5,6-b′]dithiophene (DBADT) and several derivatives bearing alkyl and phenyl groups at various positions. The optical and electrochemical properties of the synthesized compounds were investigated. All the fabricated OFET devices exhibited typical p-type behavior under ambient conditions, and diphenyl-substituted analogue-based OFET devices showed excellent mobility, as high as 0.66 cm 2 V -1 s -1 . The surface morphology and molecular orientation in thin films were also investigated using atomic force microscopy (AFM) and two-dimensional grazing incidence X-ray diffraction (2D-GIXD). It was found that the substituents and their positions affect the molecular orbitals, molecular orientation, and morphology of the thin films, producing different FET performance.

    Original languageEnglish
    Pages (from-to)698-709
    Number of pages12
    JournalJournal of Organic Chemistry
    Volume84
    Issue number2
    DOIs
    Publication statusPublished - Jan 18 2019

    ASJC Scopus subject areas

    • Organic Chemistry

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