In situ SAXS probing the evolution of the precursors and onset of nucleation of ZnSe colloidal semiconductor quantum dots

Xiaoyu Hao; Meng Chen; LinXi Wang; Zhaopeng Cao; Yan Li; Shuo Han; Meng Zhang; Kui Yu; Jianrong Zeng

doi:10.1039/C9CC09274A

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In situ SAXS probing the evolution of the precursors and onset of nucleation of ZnSe colloidal semiconductor quantum dots†

Xiaoyu Hao,

^abc Meng Chen,^d LinXi Wang,^a Zhaopeng Cao,^bce Yan Li,^c Shuo Han,^a Meng Zhang,

^a Kui Yu*^afg and Jianrong Zeng*^bc

Author affiliations

* Corresponding authors

^a Institute of Atomic and Molecular Physics, Sichuan University, P. R. China
E-mail: kuiyu@scu.edu.cn

^b Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, 201204 Shanghai, P. R. China
E-mail: zengjianrong@zjlab.org.cn

^c Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800 Shanghai, P. R. China

^d School of Chemical Engineering, Sichuan University, P. R. China

^e University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, P. R. China

^f School of Physical Science and Technology, Sichuan University, Chengdu, P. R. China

^g Engineering Research Center in Biomaterials, Sichuan University, P. R. China

Abstract

The whole evolution processes, from precursors to quantum dots (QDs), were in situ investigated by SAXS and UV-vis. Diphenylphosphine (HPPh₂) accelerates the dissolution of zinc oleate lamellar mesophase in the presence of selenide tri-n-octylphosphine (SeTOP) at a low temperature of 40 °C via the equilibrium of SeTOP + HPPh₂ ⇔ SePPh₂H + TOP.

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DOI: https://doi.org/10.1039/C9CC09274A
Article type: Communication
Submitted: 28 Nov 2019
Accepted: 13 Jan 2020
First published: 14 Jan 2020

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Chem. Commun., 2020,56, 2031-2034

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In situ SAXS probing the evolution of the precursors and onset of nucleation of ZnSe colloidal semiconductor quantum dots

X. Hao, M. Chen, L. Wang, Z. Cao, Y. Li, S. Han, M. Zhang, K. Yu and J. Zeng, Chem. Commun., 2020, 56, 2031 DOI: 10.1039/C9CC09274A

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Chemical Communications

In situ SAXS probing the evolution of the precursors and onset of nucleation of ZnSe colloidal semiconductor quantum dots†

Abstract

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In situ SAXS probing the evolution of the precursors and onset of nucleation of ZnSe colloidal semiconductor quantum dots

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