D JIN

Northeast Institute of Geography and Agroecology, Beijing, Beijing Shi, China

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Publications (3)4.81 Total impact

  • Y. Xiao, Z YAO, D JIN
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    ABSTRACT: A tetrathiafulvalene derivative — tetrabenzylthiotetrathiafulvalene (TBT-TTF) — is a new material for a conducting Langmuir-Blodgett film. A 1:1 molar mixture with stearic acid was built up to obtain a conducting LB film. The conductivities of this mixed LB film were calculated from experimental results before and after iodine oxidation. To understand the increase in conductivity after iodine oxidation, the IR electronic absorption spectra and X-ray diffraction were investigated. The IR results suggest that the system undergoes continuous free chemical reactions after iodine oxidation. TBT-TTF forms the radical cation dimers associated with I3−. Finally, interaction of this new charge transfer complex (TBT-TTF)x(I3−)1−x (x < 1), gives rise to a new conducting LB film with the highest conductivity (4.7 × 10−2 S cm−1). However, the conducting phase is unstable. The LB film can be oxidized repeatedly by iodine vapour. This is a possible application for gas sensors. The result of X-ray diffraction demonstrates that the molecular reorganization occurs because of tri-iodine chains in the bilayer.
    Thin Solid Films 01/1994; 249(2):210-214. · 1.60 Impact Factor
  • Y. Xiao, Z YAO, D JIN
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    ABSTRACT: A conducting Langmuir-Blodgett (LB) film of tetrabenzylthiotetrathiafulvalene-Ni(dmit)2 (TBT-TTF-Ni(dmit)2, where H2dmit is 4,5-dimercapto-1,3-dithiol-2-thione) with stearic acid (SA) was fabricated. The monolayer of (TBT-TTF-Ni(dmit)2)-SA at the air-water interface was studied. The thickness per layer obtained from X-ray diffraction was 2.29 nm. The conductivity of mixed LB films was measured without or with iodine oxidation. Anisotropy of conductivity was observed in the film. After iodine oxidation, with a 0.1 molar fraction of SA the maximum conductivity perpendicular to LB film was 10-2 S cm-1 and parallel to LB film was 40 S cm-1.
    Thin Solid Films 01/1993; 232(2):261-264. · 1.60 Impact Factor
  • Y. Xiao, Z YAO, D JIN
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    ABSTRACT: Conductive Langmuir-Blodgett (LB) films were fabricated with a mixture of semiamphiphilic charge transfer complex tetrabenzylthiotetrathiafulvalene-tetracyanoquinodimethane (TBTTTF-TCNQ) with stearic acid (SA). The monolayer of (TBTTTF-TCNQ)-SA at the air-water interface was studied, and the collapse pressure increased with an increase in the molar fraction of SA. The thickness per layer obtained from the results of X-ray diffraction is 2.22 nm. The conductivities of mixed LB films are measured without iodine doping and with iodine doping; the SA content has an effect on the conductivities of mixed LB films. Anisotropy of conductivity was observed in the film. The maximum conductivity of the mixed LB film is 10−2 S cm−1 with a 0.1 molar fraction of SA.
    Thin Solid Films 01/1993; 224(2):237-241. · 1.60 Impact Factor

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1 Citation
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4.81 Total Impact Points

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Institutions

  • 1993–1994
    • Northeast Institute of Geography and Agroecology
      • Lanzhou Institute of Chemical Physics
      Beijing, Beijing Shi, China