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Achieving nanoconfinement-controlled synthesis of nanoplatelets (NPLs) via solution process under ambient condition remains a challenge. In this work, we developed a general ligand-induced strategy to synthesize colloidal stable all-inorganic semiconductor NPLs with controllable lateral dimensions. By introducing certain metal salts (cations: Zn2+ and In3+, anions: NO3, BF4, or triflate OTf), wurtzite-structured (WZ-) CdS, CdSe, CdTe, and alloy Cd1−xZnxSe NPLs were directly synthesized in solution through the controlled diffusion of magic-size clusters (MSCs) at room temperature. Mechanism studies revealed that destabilization of MSCs and nanoconfined growth in templates facilitated the formation of NPLs. The present study not only provides a new synthetic route for the preparation of NPLs but also helps to provide insight into their probable formation mechanism and presents an important advance toward the rational design of functional nanomaterials.

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Publication history
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Acknowledgements

Publication history

Received: 18 August 2022
Revised: 13 October 2022
Accepted: 13 October 2022
Published: 05 December 2022
Issue date: February 2023

Copyright

© Tsinghua University Press 2022

Acknowledgements

Acknowledgements

We would like to thank Prof. Yang Zhou for the discussion and reading the manuscript. Y. Y. W. thanks Dr. Jie Pang for the suggestion on zeta potential measurements and Prof. Jianwei Nai from Zhejiang University of Technology for the help of TEM measurement. This work was supported by the National Natural Science Foundation of China (No. 22171132), the Innovation Fund from Nanjing University (No. 020514913419), and the Program for Innovative Talents and Entrepreneurs in Jiangsu (Nos. 020513006012 and 020513006014).

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