Controlled assembly of perovskite nanoparticles by photoswitchable functional ligands

Tal Binyamin; Orit Cohen; Idan Cohen; Lioz Etgar

doi:10.1088/2515-7655/ace7f5

Controlled assembly of perovskite nanoparticles by photoswitchable functional ligands

Tal Binyamin, Orit Cohen, Idan Cohen, Lioz Etgar^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Organic ligands play a crucial role in the properties and functionality of nanostructures. Functional ligands are an interesting research direction that can be utilized to influence the properties and functionality of nanoparticles (NPs). In this work, we demonstrate controlled assembly of CsPbBr₃ perovskite NPs as a result of light. Azobenzene derivative molecules were used as the photoswitchable ligands for the NPs. The assembly and disassembly of the NPs were achieved by cis-trans isomerization. By utilizing polarization-modulated, infrared reflection-absorption spectroscopy and diffusion-ordered nuclear magnetic resonance, we were able to track the attachment of the ligands to the surface of the NPs. Absorbance, photoluminescence and high-resolution, transmission electron microscopy followed the assembly and disassembly of the NPs. This work demonstrates functional ligands paired to perovskite nanostructures through controlling their assembly and disassembly, which opens the way for sensing and photodetection applications.

Original language	American English
Article number	035011
Journal	JPhys Energy
Volume	5
Issue number	3
DOIs	https://doi.org/10.1088/2515-7655/ace7f5
State	Published - 1 Jul 2023

Bibliographical note

Funding Information:
We would like to thank the Israel Science foundation and the Air Force Research Laboratory (AFRL) for their financial support. We would like to thank Iris Berg from Professor Elad Gross’ research group for performing the PM-IRRAS measurements.

Publisher Copyright:
© 2023 The Author(s). Published by IOP Publishing Ltd.

Keywords

assembly
controlled
functional
nanoparticles
perovskites
photoswitchable

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10.1088/2515-7655/ace7f5

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title = "Controlled assembly of perovskite nanoparticles by photoswitchable functional ligands",

abstract = "Organic ligands play a crucial role in the properties and functionality of nanostructures. Functional ligands are an interesting research direction that can be utilized to influence the properties and functionality of nanoparticles (NPs). In this work, we demonstrate controlled assembly of CsPbBr3 perovskite NPs as a result of light. Azobenzene derivative molecules were used as the photoswitchable ligands for the NPs. The assembly and disassembly of the NPs were achieved by cis-trans isomerization. By utilizing polarization-modulated, infrared reflection-absorption spectroscopy and diffusion-ordered nuclear magnetic resonance, we were able to track the attachment of the ligands to the surface of the NPs. Absorbance, photoluminescence and high-resolution, transmission electron microscopy followed the assembly and disassembly of the NPs. This work demonstrates functional ligands paired to perovskite nanostructures through controlling their assembly and disassembly, which opens the way for sensing and photodetection applications.",

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AU - Etgar, Lioz

N1 - Funding Information: We would like to thank the Israel Science foundation and the Air Force Research Laboratory (AFRL) for their financial support. We would like to thank Iris Berg from Professor Elad Gross’ research group for performing the PM-IRRAS measurements. Publisher Copyright: © 2023 The Author(s). Published by IOP Publishing Ltd.

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N2 - Organic ligands play a crucial role in the properties and functionality of nanostructures. Functional ligands are an interesting research direction that can be utilized to influence the properties and functionality of nanoparticles (NPs). In this work, we demonstrate controlled assembly of CsPbBr3 perovskite NPs as a result of light. Azobenzene derivative molecules were used as the photoswitchable ligands for the NPs. The assembly and disassembly of the NPs were achieved by cis-trans isomerization. By utilizing polarization-modulated, infrared reflection-absorption spectroscopy and diffusion-ordered nuclear magnetic resonance, we were able to track the attachment of the ligands to the surface of the NPs. Absorbance, photoluminescence and high-resolution, transmission electron microscopy followed the assembly and disassembly of the NPs. This work demonstrates functional ligands paired to perovskite nanostructures through controlling their assembly and disassembly, which opens the way for sensing and photodetection applications.

AB - Organic ligands play a crucial role in the properties and functionality of nanostructures. Functional ligands are an interesting research direction that can be utilized to influence the properties and functionality of nanoparticles (NPs). In this work, we demonstrate controlled assembly of CsPbBr3 perovskite NPs as a result of light. Azobenzene derivative molecules were used as the photoswitchable ligands for the NPs. The assembly and disassembly of the NPs were achieved by cis-trans isomerization. By utilizing polarization-modulated, infrared reflection-absorption spectroscopy and diffusion-ordered nuclear magnetic resonance, we were able to track the attachment of the ligands to the surface of the NPs. Absorbance, photoluminescence and high-resolution, transmission electron microscopy followed the assembly and disassembly of the NPs. This work demonstrates functional ligands paired to perovskite nanostructures through controlling their assembly and disassembly, which opens the way for sensing and photodetection applications.

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Controlled assembly of perovskite nanoparticles by photoswitchable functional ligands

Abstract

Bibliographical note

Keywords

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