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Research Article

Blinking CsPbBr3 perovskite nanocrystals for the nanoscopic imaging of electrospun nanofibers

Tianyu Chen1, Mengna Huang2, Zhongju Ye1, Jianhao Hua1, Shen Lin1( ), Lin Wei2( ), Lehui Xiao1( )
State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin 300071, China
Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of Phytochemical R&D of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
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Abstract

Blinking fluorophore perovskite nanocrystals (NCs) were employed to image the fine structure of the polystyrene (PS) electrospun fibers. The conditions of CsPbBr3 NCs embedded and dispersed into PS were investigated and optimized. The stochastic optical reconstruction microscopy is employed to visualize the fine structure of the resulted CsPbBr3@PS electrospun fibers at sub-diffraction limit. The determined resolution in the reconstructed nanoscopic image is around 25.5 nm, which is much narrower than that of conventional fluorescence image. The complex reticulation and multicompartment in bead sub-diffraction-limited structures of CsPbBr3@PS electrospun fibers were successfully mapped with the help of the stochastic blinking properties of CsPbBr3 NCs. This work demonstrated the potential applications of CsPbBr3 perovskite NCs in super-resolution fluorescence imaging to reconstruct the sub-diffraction-limited features of polymeric material.

Keywords

CsPbBr3perovskite nanocrystalspolystyreneelectrospun nanofibersuper-resolution optical imaging

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Nano Research
Volume 14 Issue 5,
May 2021
Pages 1397-1404
DOI: 10.1007/s12274-020-3189-7
Cite this article:
Chen T, Huang M, Ye Z, et al. Blinking CsPbBr3 perovskite nanocrystals for the nanoscopic imaging of electrospun nanofibers. Nano Research, 2021, 14(5): 1397-1404. https://doi.org/10.1007/s12274-020-3189-7
Topics:
Atomic physicsElectrospinningFluorescence imagingImage processingLead compoundsNanocrystalsPerovskite

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Received: 16 September 2020
Revised: 13 October 2020
Accepted: 15 October 2020
Published: 01 December 2020
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature
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