3,4-Ethylenedioxythiophene (EDOT)-based pi-conjugated oligomers: Facile synthesis and excited-state properties

    Authors

    Q. Dai; Y. J. Li; L. Zhai;W. F. Sun

    Comments

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    Abbreviated Journal Title

    J. Photochem. Photobiol. A-Chem.

    Keywords

    3, 4-Ethylenedioxythiophene (EDOT) oligomer; Photophysics; Fluorescence; Triplet excited-state absorption; ORGANIC SEMICONDUCTORS; ELECTRONIC-PROPERTIES; BUILDING-BLOCK; POLY(3, 4-ETHYLENEDIOXYTHIOPHENE); OLIGOTHIOPHENES; EDOT; DERIVATIVES; ABSORPTION; POLYMERS; SPECTRA; Chemistry, Physical

    Abstract

    A facile synthetic method to produce soluble 3,4-ethylenedioxythiophene (EDOT) oligomers was developed by using iron (III) nitrate nonahydrate as the oxidizing reagent. Two EDOT oligomers, i.e. octomers and octodecamers were obtained as the major products. Their UV-vis absorption, fluorescence at room temperature and 77 K, and triplet transient difference absorption have been measured in CH2Cl2 solutions or glassy solutions. With increased conjugation length from EDOT octomers (A) to EDOT octodecamers (B), the UV-vis absorption, fluorescence and the triplet transient difference absorption band shift to longer wavelength. Both the oligomers also exhibit reasonably high efficiency to generate singlet oxygen. (C) 2009 Elsevier B.V. All rights reserved.

    Journal Title

    Journal of Photochemistry and Photobiology a-Chemistry

    Volume

    206

    Issue/Number

    2-3

    Publication Date

    1-1-2009

    Document Type

    Article

    Language

    English

    First Page

    164

    Last Page

    168

    WOS Identifier

    WOS:000269471200009

    ISSN

    1010-6030

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