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Anion exchange in inorganic perovskite nanocrystal polymer composites

Anion exchange in inorganic perovskite nanocrystal polymer composites
Anion exchange in inorganic perovskite nanocrystal polymer composites
We demonstrate a facile, low-cost and room-temperature method of anion exchange in cesium lead bromide nanocrystals (CsPbBr3 NCs), embedded into a polymer matrix. The anion exchange occurs upon exposure of the solid CsPbBr3 NCs/PDMS nanocomposite in controlled anion precursor gas atmosphere. The rate and extent of the anion exchange reaction can be controlled via the variation of either the exposure time or the relative concentration of the anion precursor gas. Post-synthesis chemical transformation of perovskite nanocrystal-polymer composites is not readily achievable using conventional methods of anion exchange, which renders the gas-assisted strategy extremely useful. We envisage that this work will enable the development of solid-state perovskite NCs optoelectronic devices.
1478-6524
Sygletou, Maria
01f32378-48f0-4d5e-a98a-a8b3b994a847
Kyriazi, Maria-Eleni
3cfe9662-4e7f-49bc-b707-ccc2b4da6b09
Kanaras, Antonios
667ecfdc-7647-4bd8-be03-a47bf32504c7
Stratakis, Emmanuel
73e27da3-b109-4404-94ef-12b8f1ab2d16
Sygletou, Maria
01f32378-48f0-4d5e-a98a-a8b3b994a847
Kyriazi, Maria-Eleni
3cfe9662-4e7f-49bc-b707-ccc2b4da6b09
Kanaras, Antonios
667ecfdc-7647-4bd8-be03-a47bf32504c7
Stratakis, Emmanuel
73e27da3-b109-4404-94ef-12b8f1ab2d16

Sygletou, Maria, Kyriazi, Maria-Eleni, Kanaras, Antonios and Stratakis, Emmanuel (2018) Anion exchange in inorganic perovskite nanocrystal polymer composites. Chemical Science. (doi:10.1039/C8SC02830C).

Record type: Article

Abstract

We demonstrate a facile, low-cost and room-temperature method of anion exchange in cesium lead bromide nanocrystals (CsPbBr3 NCs), embedded into a polymer matrix. The anion exchange occurs upon exposure of the solid CsPbBr3 NCs/PDMS nanocomposite in controlled anion precursor gas atmosphere. The rate and extent of the anion exchange reaction can be controlled via the variation of either the exposure time or the relative concentration of the anion precursor gas. Post-synthesis chemical transformation of perovskite nanocrystal-polymer composites is not readily achievable using conventional methods of anion exchange, which renders the gas-assisted strategy extremely useful. We envisage that this work will enable the development of solid-state perovskite NCs optoelectronic devices.

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c8sc02830c - Accepted Manuscript
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Accepted/In Press date: 29 August 2018
e-pub ahead of print date: 30 August 2018

Identifiers

Local EPrints ID: 424488
URI: https://eprints.soton.ac.uk/id/eprint/424488
ISSN: 1478-6524
PURE UUID: b6edab73-5b29-467c-837b-e4d37d7a1129
ORCID for Antonios Kanaras: ORCID iD orcid.org/0000-0002-9847-6706

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Date deposited: 05 Oct 2018 11:37
Last modified: 20 Jul 2019 00:51

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Contributors

Author: Maria Sygletou
Author: Maria-Eleni Kyriazi
Author: Emmanuel Stratakis

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