Jiejun Ren, Longyun Liu, Fan Liu, Huiping Liu, Xiaopeng Zhou, Gen Li, Liangjun Chen, Guoping Yan, Yuhua Wang
{"title":"Structural reconstruction synthesis of highly luminous water-stable CsPbBr3@CsPb2Br5@DSPE core-shell perovskite nanocrystals for bioimaging, pattering, and LEDs","authors":"Jiejun Ren, Longyun Liu, Fan Liu, Huiping Liu, Xiaopeng Zhou, Gen Li, Liangjun Chen, Guoping Yan, Yuhua Wang","doi":"10.1016/j.jmst.2024.09.041","DOIUrl":null,"url":null,"abstract":"Lead halide perovskite (LHP) nanocrystals (NCs) suffer from poor stability against environmental factors (heat, moisture, oxygen, etc.), which seriously hinders their practical application. Constructing a core-shell structure could be an effective approach to improve the stability and optical properties of the LHP NCs. Herein, a novel strategy of water-triggered phase transformation and phospholipid (DSPE) micelle encapsulation is proposed, generating highly luminescent water-dispersed CsPbBr<sub>3</sub>@CsPb<sub>2</sub>Br<sub>5</sub>@DSPE core-shell-shell nanocrystals. The epitaxial growth of the CsPb<sub>2</sub>Br<sub>5</sub> shell is induced by the in-situ reconstruction of the CsPbBr<sub>3</sub> surface by water erosion, and the lattice mismatch with the CsPbBr<sub>3</sub> core is small (3.8%). The further amphipathic phospholipid encapsulation guarantees their excellent water dispersity and stability. Revealed by the femtosecond transient absorption spectroscopy, the dense CsPb<sub>2</sub>Br<sub>5</sub>@DSPE shell effectively passivates the surface of the CsPbBr<sub>3</sub> core, thus improving its stability and luminescence performance. The resulting CsPbBr<sub>3</sub>@CsPb<sub>2</sub>Br<sub>5</sub>@DSPE nanoparticles exhibit excellent performance as fluorescent probes for bioimaging, aqueous inks for high-resolution pattering, and light conversion layers for LEDs, demonstrating their promising potential in multiple applications.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"43 1","pages":""},"PeriodicalIF":11.2000,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science & Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.jmst.2024.09.041","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Lead halide perovskite (LHP) nanocrystals (NCs) suffer from poor stability against environmental factors (heat, moisture, oxygen, etc.), which seriously hinders their practical application. Constructing a core-shell structure could be an effective approach to improve the stability and optical properties of the LHP NCs. Herein, a novel strategy of water-triggered phase transformation and phospholipid (DSPE) micelle encapsulation is proposed, generating highly luminescent water-dispersed CsPbBr3@CsPb2Br5@DSPE core-shell-shell nanocrystals. The epitaxial growth of the CsPb2Br5 shell is induced by the in-situ reconstruction of the CsPbBr3 surface by water erosion, and the lattice mismatch with the CsPbBr3 core is small (3.8%). The further amphipathic phospholipid encapsulation guarantees their excellent water dispersity and stability. Revealed by the femtosecond transient absorption spectroscopy, the dense CsPb2Br5@DSPE shell effectively passivates the surface of the CsPbBr3 core, thus improving its stability and luminescence performance. The resulting CsPbBr3@CsPb2Br5@DSPE nanoparticles exhibit excellent performance as fluorescent probes for bioimaging, aqueous inks for high-resolution pattering, and light conversion layers for LEDs, demonstrating their promising potential in multiple applications.
期刊介绍:
Journal of Materials Science & Technology strives to promote global collaboration in the field of materials science and technology. It primarily publishes original research papers, invited review articles, letters, research notes, and summaries of scientific achievements. The journal covers a wide range of materials science and technology topics, including metallic materials, inorganic nonmetallic materials, and composite materials.