Interface engineering of water-dispersible near-infrared-emitting CuInZnS/ZnSe/ZnS quantum dots

Mann, Patrick, Fairclough, Simon M., Bourke, Struan, Burkitt Gray, Mary, Urbano, Laura, Morgan, David J. ORCID: https://orcid.org/0000-0002-6571-5731, Dailey, Lea Ann, Thanou, Maya, Long, Nicholas J. and Green, Mark A. 2024. Interface engineering of water-dispersible near-infrared-emitting CuInZnS/ZnSe/ZnS quantum dots. Crystal Growth and Design 24 (15) , pp. 6275-6283. 10.1021/acs.cgd.4c00528

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Abstract

We report the synthesis of near-infrared (IR)-emitting core/shell/shell quantum dots of CuInZnS/ZnSe/ZnS and their phase transfer to water. The intermediate ZnSe shell was added to inhibit the migration of ions from the standard ZnS shell into the emitting core, which often leads to a blue shift in the emission profile. By engineering the interface between the core and terminal shell layer, the optical properties can be controlled, and emission was maintained in the near-IR region, making the materials attractive for biological applications. In addition, the hydrodynamic diameter of the particle was controlled using amphiphilic polymers.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Publisher:	American Chemical Society
ISSN:	1528-7483
Funders:	EPSRC
Date of First Compliant Deposit:	2 August 2024
Date of Acceptance:	12 July 2024
Last Modified:	03 Sep 2024 14:30
URI:	https://orca.cardiff.ac.uk/id/eprint/171129

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