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Author:

Liang, L. (Liang, L..) | Tong, J. (Tong, J..) | Shen, L. (Shen, L..) | Zhang, Y. (Zhang, Y..) | Bun, Pun, E.Y. (Bun, Pun, E.Y..) | Lin, H. (Lin, H..)

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EI Scopus SCIE

Abstract:

Halide perovskite presents great competitive advantages in the new generation of stimuli-responsive materials, while the tuning of fluorescence emission is still limited by irritative factors and external conditions. Herein, anti-solvent assisted crystallization and in-situ synthesis are innovatively combined to accomplish the fiberized self-assembly of copper-based perovskite quantum dots economically and environmentally, which makes humidity a novel stimulus for luminescence regulation. Under the excitation of medium-wave UV, the original Cs3Cu2I5-CsCu2I3@polyacrylonitrile (CCI@PAN) fibers exhibit a main emission peak of 460 nm with a shoulder at 550 nm, and the intensity of shoulder peak is gradually increased with the continuous addition of moisture. Switching from blue to yellow fluorescence is achieved in CCI@PAN fiber membrane by the introduction of water, which is attributed to the ultra-high solubility of CsI in water. Moreover, owing to the spatial limitation of the nanofibers, the unique incomplete reversibility exhibited by the nanofiber membrane during water removal predicts that the nanofiber membrane can be used as a permanent recording material. Overall, this work deeply explores the influence of humidity on the fluorescence and structure of perovskite quantum dots, providing a method to synthesize innovative perovskite nanofiber composites based on emission conversion, which has broad prospects in advanced anti-counterfeiting, biological protection display, information encryption and smart wearable devices. © 2024 Elsevier B.V.

Keyword:

Super flexibility Hydrochromic materials Copper-based perovskites Fiberized self-assembly Incomplete reversibility

Author Community:

  • [ 1 ] [Liang L.]School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
  • [ 2 ] [Tong J.]School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
  • [ 3 ] [Shen L.]School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
  • [ 4 ] [Shen L.]College of Microelectronics and Key Laboratory of Optoelectronics Technology, Faculty of Information Technology, Beijing University of Technology, Beijing, 100124, China
  • [ 5 ] [Zhang Y.]School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
  • [ 6 ] [Bun Pun E.Y.]Department of Electrical Engineering and State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Hong Kong Special Administrative Region, China
  • [ 7 ] [Lin H.]School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, China
  • [ 8 ] [Lin H.]Department of Electrical Engineering and State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Hong Kong Special Administrative Region, China

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Source :

Chemical Engineering Journal

ISSN: 1385-8947

Year: 2024

Volume: 489

1 5 . 1 0 0

JCR@2022

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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