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Yin J, Zhang J, Wu Z, Wu F, Li X, Dai J, Chen C. Origin of Water-Stable CsPbX 3 Quantum Dots Assisted by Zwitterionic Ligands and Sequential Strategies for Enhanced Luminescence Based on Crystal Evolution. Small 2024; 20:e2307042. [PMID: 37946682 DOI: 10.1002/smll.202307042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 10/28/2023] [Indexed: 11/12/2023]
Abstract
Water stability is a crucial issue always addressed for commercial practical application of perovskite quantum dots (QDs). Recent advances in ligand engineering for in situ synthesis of water-stable perovskite QDs have attracted growing interest. However, the exact mechanism remains unclear. Here, the function of 4-bromobutyric acid (BBA) and oleylamine (OLA) is systematically studied in water-stable CsPbX3 (X = Br and I) QDs and confirms that the zwitterionic ligands generated in situ by BBA and OLA are anchored on the QDs surface, thus preventing water from penetrating into the QDs. Cs4PbBr6 intermediate crystal found in the crystal structure evolution process of CsPbX3 QD further reveals a complete crystallization process: PbX2 + CsX + Br- → Cs4PbBr6 crystals + X-→ CsPbX3 QDs + Br-. Furthermore, it is found that the solvent coordination of the precursor solution has a significant effect on the crystallinity of Cs4PbBr6 intermediate crystal, while the Rb+ doping can effectively passivate the surface defects of CsPbX3 QDs, thereby jointly achieving photoluminescence quantum yields (PLQY) of 94.6% for CsPbBr3 QDs (88.2% for CsPbI3 QDs). This work provides new insights and guiding ideas for the green synthesis of high-quality and water-stable perovskite QDs.
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Affiliation(s)
- Junyang Yin
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jie Zhang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zhenzi Wu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Feng Wu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiong Li
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jiangnan Dai
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Changqing Chen
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
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Zu Y, Xi J, Li L, Dai J, Wang S, Yun F, Jiao B, Dong H, Hou X, Wu Z. High-Brightness and Color-Tunable FAPbBr 3 Perovskite Nanocrystals 2.0 Enable Ultrapure Green Luminescence for Achieving Recommendation 2020 Displays. ACS Appl Mater Interfaces 2020; 12:2835-2841. [PMID: 31865697 DOI: 10.1021/acsami.9b18140] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
To best catch human eyes in next-generation displays, the updated recommendation 2020 (Rec. 2020) standard has called for ultrapure green emitters to be qualified with a narrow emission of 525-535 nm with a full width at half-maximum (fwhm) below 25 nm. However, it is still challenging to find an emitter which can simultaneously cover these two criteria. Instead of traditional II-VI group semiconductor quantum dots, perovskite nanocrystals (NCs) can render versatile emitting tunability to allow them access to the Rec. 2020 standard. Herein, to realize the critical window of Rec. 2020, we have proposed a scalable, room temperature synthesis route of formamidinium lead bromide (FAPbBr3) NCs using a sole ligand of sulfobetaine-18 (SBE-18). The as-synthesized FAPbBr3 NCs exhibit an ideal emission at 534 nm with an ultranarrow fwhm of 20.5 nm and a high photoluminescence quantum yield of 90.6%, overwhelming the FAPbBr3 nanoplates capped with oleic acid/oleylamine (OA/OAM). Introducing these high quality NCs into backlight displays, an ultrapure green backlight which covers ≈85.7% of the Rec. 2020 standard in the CIE 1931 color space is achieved, signifying the "greenest" backlight till now. Thus, we can foresee perovskite NCs as the most potential candidates for next-generation displays.
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Affiliation(s)
- Yanqing Zu
- Department of Electronic Science and Technology, School of Electronic and Information Engineering , Xi'an Jiaotong University , Xi'an 710049 , Shaanxi , People's Republic of China
| | - Jun Xi
- Global Frontier Center for Multiscale Energy Systems , Seoul National University , Seoul 08826 , Korea
- Zernike Institute for Advanced Materials , University of Groningen , Nijenborgh 4 , Groningen 9747 AG , The Netherlands
| | - Lu Li
- Department of Electronic Science and Technology, School of Electronic and Information Engineering , Xi'an Jiaotong University , Xi'an 710049 , Shaanxi , People's Republic of China
- Ningbo Exciton Innovation Materials Research Institute Company Limited , Ningbo 315040 , Zhejiang , People's Republic of China
| | - Jinfei Dai
- Department of Electronic Science and Technology, School of Electronic and Information Engineering , Xi'an Jiaotong University , Xi'an 710049 , Shaanxi , People's Republic of China
| | - Shuangpeng Wang
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering , University of Macau , Avenida da Universidade , Taipa 999078 , Macau , China
| | - Feng Yun
- Department of Electronic Science and Technology, School of Electronic and Information Engineering , Xi'an Jiaotong University , Xi'an 710049 , Shaanxi , People's Republic of China
| | - Bo Jiao
- Department of Electronic Science and Technology, School of Electronic and Information Engineering , Xi'an Jiaotong University , Xi'an 710049 , Shaanxi , People's Republic of China
| | - Hua Dong
- Department of Electronic Science and Technology, School of Electronic and Information Engineering , Xi'an Jiaotong University , Xi'an 710049 , Shaanxi , People's Republic of China
| | - Xun Hou
- Department of Electronic Science and Technology, School of Electronic and Information Engineering , Xi'an Jiaotong University , Xi'an 710049 , Shaanxi , People's Republic of China
| | - Zhaoxin Wu
- Department of Electronic Science and Technology, School of Electronic and Information Engineering , Xi'an Jiaotong University , Xi'an 710049 , Shaanxi , People's Republic of China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan 030006 , Shanxi , People's Republic of China
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Mizuhara T, Saha K, Moyano DF, Kim CS, Yan B, Kim YK, Rotello VM. Acylsulfonamide-Functionalized Zwitterionic Gold Nanoparticles for Enhanced Cellular Uptake at Tumor pH. Angew Chem Int Ed Engl 2015; 54:6567-70. [PMID: 25873209 PMCID: PMC4484729 DOI: 10.1002/anie.201411615] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 03/18/2015] [Indexed: 12/17/2022]
Abstract
A nanoparticle design featuring pH-responsive alkoxyphenyl acylsulfonamide ligands is reported herein. As a result of ligand structure, this nanoparticle is neutral at pH 7.4, becoming positively charged at tumor pH (<6.5). The particle uptake and cytotoxicity increase over this pH range. This pH-controlled uptake and toxicity makes this particle a promising tool for tumor selective therapy.
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Affiliation(s)
- Tsukasa Mizuhara
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003 (USA)
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501 (Japan)
| | - Krishnendu Saha
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003 (USA)
| | - Daniel F Moyano
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003 (USA)
| | - Chang Soo Kim
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003 (USA)
| | - Bo Yan
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003 (USA)
| | - Young-Kwan Kim
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003 (USA)
| | - Vincent M Rotello
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003 (USA).
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