1. Wacker‐Lehrstuhl für Makromolekulare Chemie, Technische Universit?t München, Lichtenbergstrasse 4, 85747 Garching (Germany);2. Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2 (Canada)
Abstract:
Hydride‐terminated photoluminescent silicon nanocrystals (SiNCs) were functionalized with organolithium compounds. The reaction is proposed to proceed through cleavage of Si?Si bonds and formation of a Si?Li surface species. The method yields colloidally stabilized SiNCs at room temperature with short reaction times. SiNCs with mixed surface functionalities can be prepared in an easy two‐step reaction by this method by quenching of the Si?Li group with electrophiles or by addressing free Si?H groups on the surface with a hydrosilylation reaction.