Synthesis of germanium nanoclusters with irreversibly attached functional groups: Acetals, alcohols, esters, and polymers

被引:54
作者
Tanke, RS [1 ]
Kauzlarich, SM
Patten, TE
Pettigrew, KA
Murphy, DL
Thompson, ME
Lee, HWH
机构
[1] Univ Wisconsin, Dept Chem, Stevens Point, WI 54481 USA
[2] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA
[3] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA
[4] UltraDots Inc, Fremont, CA 94539 USA
关键词
D O I
10.1021/cm021778h
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Germanium nanoclusters of average diameter 4 nm were prepared with covalently bound termination groups. Chloride-terminated nanoclusters were reacted with a Grignard reagent to form acetal-containing surface-terminated nanoclusters. Treatment with acid yielded hydroxyl-containing surface-terminated nanoclusters, and treatment with an acid bromide and base yielded an ester-containing surface-terminated nanocluster. Atom transfer radical polymerization (ATRP) was used to graft polymer chains from the surfaces of the nanoparticles to yield hybrid nanostructures. Changes of the termination group in the nanoclusters did not alter the photophysics of the original nanoclusters, a result that is consistent with a stable nanocluster surface. The nanoclusters were characterized by HRTEM (high-resolution transmission electron microscopy), NMR, FTIR, UV-vis, and fluorescence spectroscopy.
引用
收藏
页码:1682 / 1689
页数:8
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