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Issue 4, 2019
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Electrospun Janus nanofibers for white-light emission through efficient spatial isolation to control two-step energy transfer

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Abstract

White-light-emitting materials are an important component for realizing full-color OLED devices. However, it is still a challenge to achieve white-light emission from one single fluorescent dye, as the essential requirement of the emission spectrum is that it should be sufficiently broad to cover the entire visible-light region. Controlling the energy transfer between two or three fluorescent dyes is a feasible approach for achieving white-light emission, and this has attracted widespread attention from many researchers. In this study, a white-light-emitting Janus nanofiber film was fabricated using a side-by-side electrospinning method. RGB fluorescent molecules were used to form a donor–acceptor system, where the red and blue fluorescent molecules were located on the PAN-side of the nanofiber, and the green fluorescent molecules were located on the PVP-side of the nanofiber. The Janus structure enabled an efficient spatial separation of the RGB fluorescent molecules within the nanofiber while rationally regulating the two-step energy transfer effect between the RGB fluorescent molecules, resulting in the emission of uniform white light from every individual microscopic-sized nanofiber. Such nanofiber films have great potential for use in next-generation flexible display applications due to their excellent performance and micro scale.

Graphical abstract: Electrospun Janus nanofibers for white-light emission through efficient spatial isolation to control two-step energy transfer

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Publication details

The article was received on 14 Oct 2018, accepted on 17 Dec 2018 and first published on 24 Dec 2018


Article type: Paper
DOI: 10.1039/C8TC05183F
Citation: J. Mater. Chem. C, 2019,7, 1065-1071

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    Electrospun Janus nanofibers for white-light emission through efficient spatial isolation to control two-step energy transfer

    Z. Qin, Q. Wang, C. Wang, D. Xu, G. Ma and K. Pan, J. Mater. Chem. C, 2019, 7, 1065
    DOI: 10.1039/C8TC05183F

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