Journal
LANGMUIR
Volume 31, Issue 24, Pages 6886-6893Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.5b01246
Keywords
-
Funding
- Robert A. Welch Foundation [F-1464]
- National Science Foundation [CHE-1308813]
- Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy [DE-AC02-06CH11357]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1308813] Funding Source: National Science Foundation
Ask authors/readers for more resources
Hydride-terminated silicon (Si) nanocrystals were capped with dodecanethiol by a thermally promoted thiolation reaction. Under an inert atmosphere, the thiol-capped nanocrystals exhibit photoluminescence (PL) properties similar to those of alkene-capped Si nanocrystals, including size-tunable emission wavelength, relatively high quantum yields (>10%), and long radiative lifetimes (26-280 mu s). X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectroscopy confirmed that the ligands attach to the nanocrystal surface via covalent Si-S bonds. The thiol-capping layer, however, readily undergoes hydrolysis and severe degradation in the presence of moisture. Dodecanethiol could be exchanged with dodecene by hydrosilylation for enhanced stability.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
