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Charge-transfer complexes of sulfur-rich acceptors derived from birhodanines

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Abstract

Sulfur-rich acceptors, birhodanines, 3,3′-dialkyl-5,5′-bithiazolidinylidene-2,2′-dione-4,4′-dithiones (OS-R, R = Et and Pr) and 3,3′-dialkyl-5,5′-bithiazolidinylidene-4,4′-dione-2,2′-dithiones (SO-R, R = Et), as well as the sulfur analogues, 3,3′-dialkyl-5,5′-bithiazolidinylidene-2,4,2′,4′-tetrathiones (SS-R, R = Et, Pr), form 1 : 1 composition charge-transfer complexes with donors such as pyrene, perylene, and coronene. These complexes have mixed stacks, and the SS-R complexes show n-channel transistor properties due to the intercolumnar S⋯S contacts between the acceptors. By contrast, the OS-R and SO-R complexes exhibit basically hole-dominant ambipolar properties due to the absence of S⋯S contacts. Accordingly, the charge transport is governed mostly by the direct interchain interactions instead of the transport along the columns.

Graphical abstract: Charge-transfer complexes of sulfur-rich acceptors derived from birhodanines

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Publication details

The article was received on 19 Jun 2019, accepted on 04 Jul 2019 and first published on 04 Jul 2019


Article type: Paper
DOI: 10.1039/C9CE00952C
CrystEngComm, 2019, Advance Article

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    Charge-transfer complexes of sulfur-rich acceptors derived from birhodanines

    S. Fan, Y. Kiyota, K. Iijima, S. Ryo, T. Kawamoto, Y. Le Gal, D. Lorcy and T. Mori, CrystEngComm, 2019, Advance Article , DOI: 10.1039/C9CE00952C

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