Höhlein Ignaz M D, Kehrle Julian, Helbich Tobias, Yang Zhenyu, Veinot Jonathan G C, Rieger Bernhard
Wacker-Lehrstuhl für Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching (Germany), Fax: (+49) 89-289-13562.
Chemistry. 2014 Apr 7;20(15):4212-6. doi: 10.1002/chem.201400114. Epub 2014 Mar 24.
The reactivity of diazonium salts towards freestanding, photoluminescent silicon nanocrystals (SiNCs) is reported. It was found that SiNCs can be functionalized with aryl groups by direct reductive grafting of the diazonium salts. Furthermore, diazonium salts are efficient radical initiators for SiNC hydrosilylation. For this purpose, novel electron-deficient diazonium salts, highly soluble in nonpolar solvents were synthesized. The SiNCs were functionalized with a variety of alkenes and alkynes at room temperature with short reaction times.
报道了重氮盐对独立的光致发光硅纳米晶体（SiNCs）的反应活性。发现通过重氮盐的直接还原接枝，SiNCs可以用芳基官能化。此外，重氮盐是SiNC硅氢加成反应的有效自由基引发剂。为此，合成了在非极性溶剂中高度可溶的新型缺电子重氮盐。在室温下，短反应时间内，SiNCs能用多种烯烃和炔烃进行官能化。
