@article{Xiong2025, 
author = {Gang Xiong and Kui Yu and Yusha Yang and Chunchun Zhang and Feng Yang and Chaoran Luan and Andrei V. Sapelkin and Xiaoqin Chen},
title = {Two types of CdTeSe magic-size clusters from one ZnTeSe sample via cation exchange at room temperature},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {9},
pages = {94907854},
keywords = {magic-size cluster (MSC), precursor compound (PC), cation exchange, zinc telluride selenide, cadmium telluride selenide},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907854},
doi = {10.26599/NR.2025.94907854},
abstract = {Little is known about the room-temperature formation of colloidal semiconductor magic-size clusters (MSCs) of II-VI ternary CdE1E2 from ZnE1E2. Here, we report the first synthesis of CdTeSe MSCs from ZnTeSe MSC-340 (displaying a sharp optical absorption peaking at 340 nm) at room temperature. When ZnTeSe MSC-340 and Cd(OAc)2/OLA (made from cadmium acetate and oleylamine) were mixed, the former disappeared, while CdTeSe MSC-422 and/or MSC-399 developed. Based on our experimental data, we propose that the conversion proceeds via the interaction of Cd(OAc)2/OLA and the precursor compound of ZnTeSe MSC-340, PC-340. As such, ZnTeSe MSC-340 first isomerized to PC-340; via cation exchange PC-340 transformed to CdTeSe PCs. In turn, the resultant CdTeSe PC isomerized to CdTeSe MSCs, the process of which was rate-determining. Furthermore, we show that the transformation between CdTeSe MSC-422 and MSC-399 was reversible, providing strong evidence that they are a pair of isomers. Our study introduces a room-temperature avenue towards Cd-based MSCs from Zn-based ones, which follows anionic framework conservation and anionic number conservation.}
}