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Direct Arylation of Silicon Nanocrystals with Hexadehydro‐Diels–Alder‐Derived Benzynes.

Authors :
Lai, Ming
Zhang, Ying
Zhao, Liang
Huang, Yu‐Hua
Zhang, Lei
Fu, Wenlong
Chen, Pu
Wang, Xu‐Dong
Zhu, Tingshun
Yang, Zhenyu
Source :
Angewandte Chemie International Edition. 6/26/2023, Vol. 62 Issue 26, p1-7. 7p.
Publication Year :
2023

Abstract

Colloidal silicon nanocrystals (SiNCs) have garnered significant interest in optoelectronics and biomedical applications. Direct arylation provides pathways to enhance the solution processability of particles and manipulate the photophysical and electronic properties of SiNCs. Unfortunately, existing methods employed to prepare aryl‐functionalized SiNCs are based on organometallic coupling or transition‐metal‐catalyzed strategies, which require metal‐based reagents for preactivation or the precursors and complicated post‐treatment processes for product purification. Herein, we demonstrate a metal‐free method that directly functionalizes SiNCs with aryl‐based ligands. We design a series of benzyne derivatives formed from the thermal cyclization of predesigned alkynes, allowing efficient arylation on hydride‐terminated silicon surfaces under mild conditions. These aryl‐functionalized SiNCs exhibit strong blue emissions with nanosecond‐scaled decay, suggesting the formation of a new radiative recombination channel on SiNC surfaces. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14337851
Volume :
62
Issue :
26
Database :
Academic Search Index
Journal :
Angewandte Chemie International Edition
Publication Type :
Academic Journal
Accession number :
164370658
Full Text :
https://doi.org/10.1002/anie.202304056