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Citation: Chang You-Ming, Deng Xiao-Dong. Studies on the Structures and Electrical Propertis of Iodine-Doped 3-Ethyl-5-(2-(3-Ethyl-2-Benzothiazolinylidene)-Ethylidene)-Rhodanine[J]. Acta Physico-Chimica Sinica, ;1992, 8(04): 540-544. doi: 10.3866/PKU.WHXB19920423 shu

Studies on the Structures and Electrical Propertis of Iodine-Doped 3-Ethyl-5-(2-(3-Ethyl-2-Benzothiazolinylidene)-Ethylidene)-Rhodanine

1.
Institute of Chemistry, Academia Sinica, Beijing 100080

Received Date: 15 March 1991
Available Online: 15 August 1992

The merocyanine dye 3-ethyl-5-(2-(3-ethyl-2-benzothiazolinylidene)-ethylidene)-rhodanine (BTER) known as Agfa-10 has been found to have a od photoconductivity as solution cast film. In this paper iodine-doped BTER was obtained by doping with iodine vapor. Its structure was investigated with the following characteristies.
1 The doped iodine had been excited as I_3~- anion.
2 Because the electron located on the sulphur atom was transferred to iodine, the charge transfer complex of (BTER-I_3) formed.
3 During the iodine doping process, BTER changed from α-form to β-modification. These had been identified by X-ray diffraction, VIS-absorption spectra and SEM picture.
4 From the volt-Ampere curve obtained from sandwich cell, when E≤2.2×10~(-1) V·cm~(-1), the room temperature electrical conductivity of BTER and BTER-I_3 were found to be 2.22×10~(-10) s·cm~(-1) and 2.6×10~(-7) S·cm~(-1), respectively.
- Iodine-doped; Structure; Phsae transition; Charge transfer; Electric properties
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