Electrospun Janus nanofibers for white-light emission through efficient spatial isolation to control two-step energy transfer
| Autor: | Chengzhong Wang, Dongfeng Xu, Guiping Ma, Qiutong Wang, Kai Pan, Zhen Qin |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Fluorescence Electrospinning 0104 chemical sciences Flexible display Nanofiber Materials Chemistry OLED RGB color model Emission spectrum Janus 0210 nano-technology |
| Zdroj: | Journal of Materials Chemistry C. 7:1065-1071 |
| ISSN: | 2050-7534 2050-7526 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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