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流动合成过程中胶体CsPbX纳米晶体的原位同步加速器X射线全散射测量与分析

In situ synchrotron X-ray total scattering measurements and analysis of colloidal CsPbX nanocrystals during flow synthesis.

作者信息

Greenberg Matthew W, Lin Cheng Hung, Chodankar Shirish, Ghose Sanjit K

机构信息

Department of Chemistry and Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, NY 12504, USA.

National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA.

出版信息

J Synchrotron Radiat. 2023 Nov 1;30(Pt 6):1092-1099. doi: 10.1107/S1600577523007300. Epub 2023 Sep 22.

DOI:10.1107/S1600577523007300
PMID:37738031
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10624037/
Abstract

In situ X-ray scattering measurements of CsPbX (X = Cl, Br, I) nanocrystal formation and halide exchange at NSLS-II beamlines were performed in an automated flow reactor. Total scattering measurements were performed at the 28-ID-2 (XPD) beamline and small-angle X-ray scattering at the 16-ID (LiX) beamline. Nanocrystal structural parameters of interest, including size, size distribution and atomic structure, were extracted from modeling the total scattering data. The results highlight the potential of these beamlines and the measurement protocols described in this study for studying dynamic processes of colloidal nanocrystal synthesis in solution with timescales on the order of seconds.

摘要

在自动流动反应器中，利用美国国家同步加速器光源II（NSLS-II）的光束线对CsPbX（X = Cl、Br、I）纳米晶体的形成及卤化物交换进行了原位X射线散射测量。在28-ID-2（XPD）光束线进行了总散射测量，在16-ID（LiX）光束线进行了小角X射线散射测量。通过对总散射数据进行建模，提取了包括尺寸、尺寸分布和原子结构在内的纳米晶体结构参数。结果突出了这些光束线以及本研究中描述的测量方案在研究溶液中胶体纳米晶体合成动态过程方面的潜力，其时间尺度约为秒级。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/fa26e8ecb6a6/s-30-01092-fig9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/47dd08d51902/s-30-01092-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/96f3e519d5c7/s-30-01092-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/b8caf0569469/s-30-01092-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/b9502f1e0d9a/s-30-01092-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/fe94f572bb03/s-30-01092-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/afa0d0738663/s-30-01092-fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/73b1790f7fad/s-30-01092-fig7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/7d74a10b9207/s-30-01092-fig8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/fa26e8ecb6a6/s-30-01092-fig9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/47dd08d51902/s-30-01092-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/96f3e519d5c7/s-30-01092-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/b8caf0569469/s-30-01092-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/b9502f1e0d9a/s-30-01092-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/fe94f572bb03/s-30-01092-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/afa0d0738663/s-30-01092-fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/73b1790f7fad/s-30-01092-fig7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/7d74a10b9207/s-30-01092-fig8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7207/10624037/fa26e8ecb6a6/s-30-01092-fig9.jpg

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