NMR study of InP quantum dots: Surface structure and size effects

被引：79

作者：

Tomaselli, M ^{[1
]}

Yarger, JL

Bruchez, M

Havlin, RH

deGraw, D

Pines, A

Alivisatos, AP

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 1999年 / 110卷 / 18期

关键词：

D O I：

10.1063/1.478858

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：

We report the results of P-31 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 P-31 surface components are resolved and related to different electronic surroundings. With decreasing particle size the In P-31 core resonance reveals an increasing upfield chemical shift related to the overall size dependence of the InP electronic structure. (C) 1999 American Institute of Physics. [S0021-9606(99)70718-X].

引用

页码：8861 / 8864

页数：4

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