H-1-NMR CHARACTERIZATION OF THE CDSE NANOCRYSTALLITE SURFACE

被引：56

作者：

MAJETICH, SA ^{[1
]}

CARTER, AC ^{[1
]}

BELOT, J ^{[1
]}

MCCULLOUGH, RD ^{[1
]}

机构：

[1] CARNEGIE MELLON UNIV,DEPT CHEM,PITTSBURGH,PA 15213

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 51期

关键词：

D O I：

10.1021/j100102a042

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：

Proton NMR measurements are used to study the kinetics and equilibrium binding of n-butanethiolate (BuS(-)) to the surfaces of CdSe nanocrystallites and the chemistry induced by CdSe surfaces. Because these crystallites have a well-defined size and shape, the overall amount of attached ligand can be determined by NMR and related to the average number of attached groups per nanocrystallite. Evidence of catalytic generation of n-butyl disulfide (BuSSBu) at the nanocrystallite surface is observed by NMR and by GC/MS measurements. The connection between NMR and luminescence measurements is made, and these results are used to model the surface attachment on CdSe nanocrystallites.

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页码：13705 / 13710

页数：6

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