Oxidation Resistant Germanium Nanowires: Bulk Synthesis, Long Chain Alkanethiol Functionalization, and Langmuir−Blodgett Assembly
- 29 July 2005
- journal article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 127 (33), 11871-11875
- https://doi.org/10.1021/ja053836g
Abstract
A simple method is developed to synthesize gram quantities of uniform Ge nanowires (GeNWs) by chemical vapor deposition on preformed, monodispersed seed particles loaded onto a high surface area silica support. Various chemical functionalization schemes are investigated to passivate the GeNW surfaces using alkanethiols and alkyl Grignard reactions. The stability of functionalization against oxidation of germanium for various alkyl chain lengths is elucidated by X-ray photoelectron spectroscopy. Among all schemes tested, long chain alkanethiols (≥C12) are found to impart the most stable GeNW passivation against oxidation upon extended exposure to ambient air. Further, the chemically functionalized oxidation-resistant nanowires are soluble in organic solvents and can be readily assembled into close-packed Langmuir−Blodgett films potentially useful for future high performance electronic devices.Keywords
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This publication has 12 references indexed in Scilit:
- A Dramatic Spin–Orbit Effect Observed in the Vibrational Frequencies of the Chloroiodomethane CationAngewandte Chemie International Edition, 2005
- High mobility Ge-on-insulator p-channel MOSFETs using Pt germanide Schottky source/drainIEEE Electron Device Letters, 2005
- Chemical Surface Passivation of Ge NanowiresJournal of the American Chemical Society, 2004
- Adsorption Kinetics of 1-Alkanethiols on Hydrogenated Ge(111)Langmuir, 2003
- Experimental Observation and Confirmation of Icosahedral W@Au12 and Mo@Au12 MoleculesAngewandte Chemie International Edition, 2002
- Nucleation and Growth of Germanium Nanowires Seeded by Organic Monolayer-Coated Gold NanocrystalsJournal of the American Chemical Society, 2002
- Control of Thickness and Orientation of Solution-Grown Silicon NanowiresScience, 2000
- GROWTH OF OXIDE LAYER ON GERMANIUM (011) SUBSTRATE UNDER DRY AND WET ATMOSPHERESSurface Review and Letters, 1999
- A Laser Ablation Method for the Synthesis of Crystalline Semiconductor NanowiresScience, 1998
- Radiation-induced conductivity in polymerized and nonpolymerized columnar aggregates of phthalocyanineJournal of the American Chemical Society, 1992