Light down-converter based on luminescent nanofibers from the blending of conjugated rod-coil block copolymers and perovskite through electrospinning

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Abstract

We demonstrated a novel strategy for the preparation of light down-converter by combining rod-coil block copolymers with perovskite quantum dots (QDs) through electrospinning. Reports have shown that polymer deformability can be enhanced by incorporating a soft segment and controlled by varying the rod/coil ratio. Therefore, we first synthesized the rod-coil block copolymer through the click reaction of polyfluorene (PF) and poly(n-butyl acrylate) (PBA). Next, the CsPbBr3@PF8k-b-PBA12k composite fibers were fabricated by blending perovskite through electrospinning. Optical spectral evidence demonstrated the success of the strategy, as light down-converters were prepared through the controlled variance of QD/polymer ratios to achieve tunable color and stretchability. This result reveals the potential of using rod-coil block copolymers to fabricate color-tunable perovskite light down-converters.

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Jiang, D. H., Kobayashi, S., Jao, C. C., Mato, Y., Isono, T., Fang, Y. H., … Kuo, C. C. (2020). Light down-converter based on luminescent nanofibers from the blending of conjugated rod-coil block copolymers and perovskite through electrospinning. Polymers, 12(1). https://doi.org/10.3390/polym12010084

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