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Issue 26, 2017
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Multi-functional polyimides containing tetraphenyl fluorene moieties: fluorescence and resistive switching behaviors

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Abstract

Two novel aromatic polyimides (PIs), TPF27OPI and TPF99OPI, with a tetraphenyl fluorene (TPF) unit as the electron donor (D) and a 4,4′-oxydiphthalic dianhydride (ODPA) unit as the electron acceptor (A) were synthesized and characterized. Both of the as-synthesized PIs showed obvious photoluminescence properties, and compared with TPF27OPI, where the fluorene unit is located in the polymer main chain, TPF99OPI with a fluorene unit in the side chain showed stronger fluorescence and a fluorescence blue shift in the film state. The memory device with a sandwich configuration of ITO/TPF27OPI/Al showed the nonvolatile “write once, read many” (WORM) switching behavior, while that of ITO/TPF99OPI/Al exhibited “static random access memory” (SRAM) switching behavior. Both of the devices exhibited a stable ON/OFF current ratio above 104 and a long operation time, following 104 pulse reading cycles with no obvious degradation in current. The mechanism of the resistive switching behaviors was discussed using the experimental and molecular simulation results. These multi-functional polyimides showed attractive potential applications in the field of polymer optoelectronic devices and memory devices.

Graphical abstract: Multi-functional polyimides containing tetraphenyl fluorene moieties: fluorescence and resistive switching behaviors

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Publication details

The article was received on 25 Apr 2017, accepted on 05 Jun 2017 and first published on 05 Jun 2017


Article type: Paper
DOI: 10.1039/C7TC01807J
Citation: J. Mater. Chem. C, 2017,5, 6457-6466
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    Multi-functional polyimides containing tetraphenyl fluorene moieties: fluorescence and resistive switching behaviors

    L. Qu, S. Huang, Y. Zhang, Z. Chi, S. Liu, X. Chen and J. Xu, J. Mater. Chem. C, 2017, 5, 6457
    DOI: 10.1039/C7TC01807J

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