期刊
CHEMISTRY OF MATERIALS
卷 13, 期 12, 页码 4783-4786出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm010644l
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This work describes a viable route to the surface chemical modification of erbium-doped silicon nanocrystals via their reaction with a capping reagent immediately after their formation in a pyrolysis oven. While the derivatized, doped nanocrystals retain the desired luminescence at 1540 nm associated with the erbium centers, for the -SiMe3- and -Si(CH2)(3)CN-capped nanocrystals, there is a clear improvement in their solubility in solvents such as butylphenyl ether. In contrast, propylamine-modified surfaces become less soluble in the solvents tested, presumably as a consequence of extensive hydrogen-bonding-induced aggregation. The implications of these modified nanocrystals for other applications are also discussed.
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