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Highly Emitting Perovskite Nanocrystals with 2-Year Stability in Water through an Automated Polymer Encapsulation for Bioimaging

Avugadda, Sahitya Kumar ; Castelli, Andrea ; Dhanabalan, Balaji ; Fernandez, Tamara ; Silvestri, Niccolo ; Collantes, Cynthia ; Baranov, Dmitry LU orcid ; Imran, Muhammad ; Manna, Liberato and Pellegrino, Teresa , et al. (2022) In ACS Nano 16(9). p.13657-13666
Abstract

Lead-based halide perovskite nanocrystals are highly luminescent materials, but their sensitivity to humid environments and their biotoxicity are still important challenges to solve. Here, we develop a stepwise approach to encapsulate representative CsPbBr3nanocrystals into water-soluble polymer capsules. We show that our protocol can be extended to nanocrystals coated with different ligands, enabling an outstanding high photoluminescence quantum yield of ∼60% that is preserved over two years in capsules dispersed in water. We demonstrate that this on-bench strategy can be implemented on an automated platform with slight modifications, granting access to a faster and more reproducible fabrication process. Also, we reveal that... (More)

Lead-based halide perovskite nanocrystals are highly luminescent materials, but their sensitivity to humid environments and their biotoxicity are still important challenges to solve. Here, we develop a stepwise approach to encapsulate representative CsPbBr3nanocrystals into water-soluble polymer capsules. We show that our protocol can be extended to nanocrystals coated with different ligands, enabling an outstanding high photoluminescence quantum yield of ∼60% that is preserved over two years in capsules dispersed in water. We demonstrate that this on-bench strategy can be implemented on an automated platform with slight modifications, granting access to a faster and more reproducible fabrication process. Also, we reveal that the capsules can be exploited as photoluminescent probes for cell imaging at a dose as low as 0.3 μgPb/mL that is well below the toxicity threshold for Pb and Cs ions. Our approach contributes to expanding significantly the fields of applications of these luminescent materials including biology and biomedicine.

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publishing date
type
Contribution to journal
publication status
published
subject
keywords
automated fabrication, bioimaging, perovskite nanocrystals, polymer, water stability
in
ACS Nano
volume
16
issue
9
pages
10 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • pmid:35914190
  • scopus:85136059216
ISSN
1936-0851
DOI
10.1021/acsnano.2c01556
language
English
LU publication?
no
additional info
Publisher Copyright: © 2022 American Chemical Society. All rights reserved.
id
add8fc3e-fda6-4e85-987c-043d79339c6d
date added to LUP
2023-01-17 11:50:55
date last changed
2024-04-18 09:05:14
@article{add8fc3e-fda6-4e85-987c-043d79339c6d,
  abstract     = {{<p>Lead-based halide perovskite nanocrystals are highly luminescent materials, but their sensitivity to humid environments and their biotoxicity are still important challenges to solve. Here, we develop a stepwise approach to encapsulate representative CsPbBr<sub>3</sub>nanocrystals into water-soluble polymer capsules. We show that our protocol can be extended to nanocrystals coated with different ligands, enabling an outstanding high photoluminescence quantum yield of ∼60% that is preserved over two years in capsules dispersed in water. We demonstrate that this on-bench strategy can be implemented on an automated platform with slight modifications, granting access to a faster and more reproducible fabrication process. Also, we reveal that the capsules can be exploited as photoluminescent probes for cell imaging at a dose as low as 0.3 μg<sub>Pb</sub>/mL that is well below the toxicity threshold for Pb and Cs ions. Our approach contributes to expanding significantly the fields of applications of these luminescent materials including biology and biomedicine.</p>}},
  author       = {{Avugadda, Sahitya Kumar and Castelli, Andrea and Dhanabalan, Balaji and Fernandez, Tamara and Silvestri, Niccolo and Collantes, Cynthia and Baranov, Dmitry and Imran, Muhammad and Manna, Liberato and Pellegrino, Teresa and Arciniegas, Milena P.}},
  issn         = {{1936-0851}},
  keywords     = {{automated fabrication; bioimaging; perovskite nanocrystals; polymer; water stability}},
  language     = {{eng}},
  month        = {{09}},
  number       = {{9}},
  pages        = {{13657--13666}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{ACS Nano}},
  title        = {{Highly Emitting Perovskite Nanocrystals with 2-Year Stability in Water through an Automated Polymer Encapsulation for Bioimaging}},
  url          = {{http://dx.doi.org/10.1021/acsnano.2c01556}},
  doi          = {{10.1021/acsnano.2c01556}},
  volume       = {{16}},
  year         = {{2022}},
}