Single-walled carbon nanotube network ultramicroelectrodes

Analytical Chemistry
Ioana DumitrescuJulie V Macpherson

Abstract

Ultramicroelectrodes (UMEs) fabricated from networks of chemical vapor deposited single-walled carbon nanotubes (SWNTs) on insulating silicon oxide surfaces are shown to offer superior qualities over solid UMEs of the same size and dimensions. Disk shaped UMEs, comprising two-dimensional "metallic" networks of SWNTs, have been fabricated lithographically, with a surface coverage of <1% of the underlying insulating surface. The electrodes are long lasting and give highly reproducible responses (either for repeat runs with the same electrode or when comparing several electrodes with the same size). For redox concentrations <or=1 mM the steady-state behavior of SWNT network UMEs is as expected for conventional solid metal UMEs (e.g., Pt, Au), due to diffusional overlap between neighboring SWNTs. Importantly, the low intrinsic capacitance of the SWNTs and much reduced surface area lead to much faster response times and lower background currents. The well-defined geometry of the SWNT network electrode is also useful for studying electron transfer (ET) kinetics at SWNTs. Given the intrinsically high mass transport rates to SWNTs within a network electrode, the reversible nature of the CVs recorded for Ru(NH 3) 6 (3+/) (2+) and FcTMA ...Continue Reading

References

Jun 5, 1998·Science·J LiuR E Smalley
Sep 29, 2000·Analytical Chemistry·J L Conyers, H S White
Dec 6, 2002·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Peng DiaoZhong Wei
May 2, 2003·Analytical Chemistry·Joseph Wang, Mustafa Musameh
Jan 9, 2004·Analytical Chemistry·Federica ValentiniGiuseppe Palleschi
Sep 17, 2004·Journal of the American Chemical Society·J Justin GoodingD Brynn Hibbert
Dec 23, 2004·Journal of the American Chemical Society·Thomas M DayJulie V Macpherson
Jul 28, 2005·Journal of the American Chemical Society·Thomas M DayJulie V Macpherson
Nov 4, 2005·Nature Materials·Yuwei FanPhilip G Collins
Dec 29, 2005·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Kuanping GongLanqun Mao
Jan 24, 2006·The Analyst·Craig E Banks, Richard G Compton
Mar 4, 2006·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Andrew O SimmRichard G Compton
Jun 1, 2006·Journal of the American Chemical Society·Iddo HellerSerge G Lemay
Aug 21, 2007·Journal of the American Chemical Society·Paolo BertoncelloPatrick R Unwin

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Citations

Nov 12, 2009·Chemical Communications : Chem Comm·Ioana DumitrescuJulie V Macpherson
May 23, 2012·Proceedings of the National Academy of Sciences of the United States of America·Yasufumi TakahashiTomokazu Matsue
May 29, 2012·Proceedings of the National Academy of Sciences of the United States of America·Aleix G GüellPatrick R Unwin
Mar 18, 2017·Scientific Reports·Chunling WangDan Xiao
Jan 27, 2016·Physical Chemistry Chemical Physics : PCCP·Anatolii S CuharucPatrick R Unwin
Nov 27, 2014·Faraday Discussions·Hollie V PattenRobert A W Dryfe
Feb 27, 2010·Angewandte Chemie·Wenrong YangFilip Braet
Mar 14, 2012·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Christian AmatoreLaurent Thouin
Mar 2, 2013·Physical Chemistry Chemical Physics : PCCP·Michael E SnowdenPatrick R Unwin
Feb 5, 2011·Physical Chemistry Chemical Physics : PCCP·Agnieszka RutkowskaPatrick R Unwin
Aug 27, 2011·Physical Chemistry Chemical Physics : PCCP·Petr V DudinJulie V Macpherson
May 19, 2010·Analytical Chemistry·Benjamin J PrivettMark H Schoenfisch
Feb 2, 2010·Analytical Chemistry·Jiyeon KimShigeru Amemiya
Jan 27, 2012·Analytical Chemistry·Richard L McCreery, Mark T McDermott
Nov 14, 2012·Journal of the American Chemical Society·Anisha N PatelPatrick R Unwin
Nov 30, 2012·Analytical Chemistry·Siriwat SansukJulie V Macpherson
Feb 22, 2011·ACS Nano·Wan LiDaniel C Ralph
Apr 25, 2009·Current Opinion in Endocrinology, Diabetes, and Obesity

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