Transformation Pathway from CdSe Nanoplatelets with Absorption Doublets at 373/393 nm to Nanoplatelets at 434/460 nm

doi:10.1021/acs.jpclett.2c00844

	Transformation Pathway from CdSe Nanoplatelets with Absorption Doublets at 373/393 nm to Nanoplatelets at 434/460 nm
	Zhaopeng Cao1,2,5,6 ; Jinming Zhu 3,4; Jun Peng5 ; Nan Meng 1,2,6; Fenggang Bian 1,2,6; Chaoran Luan 4,8; Meng Zhang 4; Yan Li1,2,5,6 ; Kui Yu 4,7; Jianrong Zeng 1,2,6
	2022
发表期刊	JOURNAL OF PHYSICAL CHEMISTRY LETTERS (IF:4.8[JCR-2023],5.3[5-Year])
ISSN	1948-7185
卷号	13 期号:18
DOI	10.1021/acs.jpclett.2c00844
摘要	For those colloidal semiconductor CdSe nano-species that exhibit sharp optical absorption doublets, different explanations have appeared in the literature regarding their morphological nature and formation, with no consensus reached. Here, we discuss the transformation pathway in two types of CdSe nanoplatelets (NPLs), from NPL-393 to NPL-460, exhibiting absorption doublets at 373/393 and 433/460 nm respectively. Synchrotron-based small/wide-angle X-ray scattering (SAXS/WAXS) was performed to monitor the In-situ transformation associated with the temperature. Combining the results of SAXS/WAXS, optical spectroscopy, and transmission electron microscope (TEM), we propose that the transformation pathway experiences corresponding magic-size clusters (MSCs) which display similar optical properties but with 0-dimensional structure. From stacked NPL-393 to stacked NPL-460, the transformation goes through sequentially individual NPL-393, MSC-393, MSC-460, and individual NPL-460 at their corresponding characteristic temperature. The present findings provide compelling evidence that both MSCs and their assembled NPLs exhibit similar optical absorption.
关键词	CdSe, nanoplatelets, magic-size clusters, optical absorption, SAXS/WAXS
学科领域	物理学 ; 化学 ; 材料科学
学科门类	理学 ; 理学::物理学 ; 理学::化学
收录类别	SCI ; EI ; SCIE
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)["U1832150",21773162] ; Applied Basic Research Programs of Science and Technology Department of Sichuan Province[2020YJ0326] ; State Key Laboratory of Polymer Materials Engineering of Sichuan University[sklpme2020-2-09] ; Open Project of Key State Laboratory for Supramolecular Structures and Materials of Jilin University[SKLSSM 2021030]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
WOS记录号	WOS:000803568300003
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/176012
专题	物质科学与技术学院_博士生物质科学与技术学院_特聘教授组_李燕组物质科学与技术学院_硕士生
通讯作者	Yan Li; Kui Yu; Jianrong Zeng
作者单位	1.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 (P. R. China) 2.Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204 (P. R. China) 3.School of Basic Medicine, Guizhou Medical University, Guiyang, Guizhou, 550025 (P. R. China) 4.Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, Sichuan, 610065 (P. R. China) 5.School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210 (P. R. China) 6.University of Chinese Academy of Sciences, Beijing, 100049 (P. R. China) 7.Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610065 (P. R. China) 8.Laboratory of Ethnopharmacology, Tissue-orientated Property of Chinese Medicine Key Laboratory of Sichuan Province, West China School of Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan 610041 (P. R. China)
第一作者单位	物质科学与技术学院
通讯作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Zhaopeng Cao,Jinming Zhu,Jun Peng,et al. Transformation Pathway from CdSe Nanoplatelets with Absorption Doublets at 373/393 nm to Nanoplatelets at 434/460 nm[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2022,13(18).
APA	Zhaopeng Cao.,Jinming Zhu.,Jun Peng.,Nan Meng.,Fenggang Bian.,...&Jianrong Zeng.(2022).Transformation Pathway from CdSe Nanoplatelets with Absorption Doublets at 373/393 nm to Nanoplatelets at 434/460 nm.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,13(18).
MLA	Zhaopeng Cao,et al."Transformation Pathway from CdSe Nanoplatelets with Absorption Doublets at 373/393 nm to Nanoplatelets at 434/460 nm".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 13.18(2022).