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Negative effect on molecular planarity to achieve organic ternary memory: triphenylamine as the spacer

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  • SPECIAL TOPIC · Molecular Functional Materials and Applications
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Abstract

Adjusting the spacers between the electron-acceptor and the elector-donor is important to design organic ternary memory material but rarely reported. In this paper, two small molecules, ZIPGA and ZIPCAD with benzene ring or triphenylamine as the spacers, were designed and synthesized to fabricate memory devices. The Al/ZIPGA/indium-tin oxide (ITO) device showed ternary characteristics, whereas Al/ZIPCAD/ITO had no obvious memory characteristics. Density functional theory calculation, X-ray diffraction (XRD) and atomic force microscopy (AFM) were employed to interpret the different memory properties. ZIPGA thin film has the closer intermolecular packing and flatter surface morphology than ZIPCAD film, which was favorable to the electron migration. This work demonstrates the importance of spacers and reveals that triphenylamine may be not a good spacer in design of new memory material.

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Authors and Affiliations

  1. College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, China

    Shugang Xia, Jinghui He, Hua Li, Qingfeng Xu, Najun Li, Dongyun Chen & Jianmei Lu

Authors
  1. Shugang Xia
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  2. Jinghui He
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  3. Hua Li
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  4. Qingfeng Xu
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  5. Najun Li
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  6. Dongyun Chen
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  7. Jianmei Lu
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Correspondence to Jianmei Lu.

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Xia, S., He, J., Li, H. et al. Negative effect on molecular planarity to achieve organic ternary memory: triphenylamine as the spacer. Sci. China Chem. 59, 692–698 (2016). https://doi.org/10.1007/s11426-015-0538-1

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  • DOI: https://doi.org/10.1007/s11426-015-0538-1

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