NMR study of InP quantum dots: Surface structure and size effects
NMR study of InP quantum dots: Surface structure and size effects
复制标题
InP 量子点的 NMR 研究:表面结构和尺寸效应
DOI:
--
复制
发表时间:
1999
期刊:
影响因子:
--
通讯作者:
A. Alivisatos
中科院分区:
文献类型:
--
作者:
M. Tomaselli;J. Yarger;M. Bruchez;R. Havlin;David deGraw;A. Pines;A. Alivisatos
We report the results of 31P NMR measurements on trioctylphosphine oxide (TOPO) passivated InP quantum dots. The spectra show distinct surface-capping sites, implying a manifold of crystal–ligand bonding configurations. Two In 31P surface components are resolved and related to different electronic surroundings. With decreasing particle size the In 31P core resonance reveals an increasing upfield chemical shift related to the overall size dependence of the InP electronic structure.