Colloidal Synthesis of an Exotic Phase of Silicon: The BC8 Structure.
Creating allotropes and polymorphs of nanoparticles (NPs) has gained tremendous momentum in recent times. Group 14 (C, Si, Ge) has a number of allotropes; some with significant applications. Here we report the synthesis of Si NPs crystallizing in the BC8 structure via a colloidal route for the first...
| Publicado en: | Journal of the American Chemical Society Vol. 136; no. 4; pp. 1296 - 1300 |
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| Autores principales: | , , , |
| Formato: | Artículo |
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American Chemical Society
1/29/2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=94488534&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 94488534 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 1/29/2014 vid: 136 iid: 4 pid: 997 pub: American Chemical Society artinfo: ui: 94488534 10.1021/ja412213q ppf: 1296 ppct: 4 formats: tig: atl: Colloidal Synthesis of an Exotic Phase of Silicon: The BC8 Structure. aug: au: Shreyashi Ganguly Nasrin Kazem Carter, Danielle Kauzlarich, Susan M. affil: Department of Chemistry, University of California, Davis, California 95616, United States su: Colloids Silicon Allotropy Polymorphism (Crystallography) Nanoparticles Metastable states Butyllithium Precipitation (Chemistry) sug: subj: Colloids Silicon Allotropy Polymorphism (Crystallography) Nanoparticles Metastable states Butyllithium Precipitation (Chemistry) ab: Creating allotropes and polymorphs of nanoparticles (NPs) has gained tremendous momentum in recent times. Group 14 (C, Si, Ge) has a number of allotropes; some with significant applications. Here we report the synthesis of Si NPs crystallizing in the BC8 structure via a colloidal route for the first time. The BC8 structure is a metastable structure of Si that can be accessed from the β-Sn form through the release of high pressure. These Si BC8 structured NPs were synthesized via reduction of SiI with n-butyllithium, capped with octanol and precipitated from solution. The transmission electron microscopy lattice fringes as well as the selected area electron diffraction pattern of the precipitate are consistent with the BC8 structure. The LeBail whole profile fitting of powder X-ray diffraction data also confirms the structure as the BC8 phase. The Raman spectrum provides further evidence to support the BC8 structure. With proper tuning of the band gap these NPs could be potential candidates for solar cells. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2014 holdings: @attributes: islocal: N |
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