Directing the growth of highly aligned gold nanorods through a surface chemical amidation reaction

Journal of the American Chemical Society
Aneta J MieszawskaFrancis P Zamborini

Abstract

This paper describes the seed-mediated growth of highly aligned gold nanorods (Au NRs) over large areas directly on a Si(100) surface. The Si(100) surface is NH2-functionalized with (aminopropyl)triethoxysilane (APTES) followed by a DCC-catalyzed surface amidation reaction with acetic acid. After exposure to a gold nanoparticle (Au NP) "seed" solution, chemical seed-mediated growth of the surface-bound seeds via reduction of AuCl4- by ascorbic acid in the presence of cetyltrimethylammonium bromide leads to the growth of highly aligned Au NRs on the surface. About 80% of the NRs are aligned in the same direction within a +/-30 degrees range. Au NRs account for 19% of the nanostructures with average aspect ratio (AR) of approximately 20. The alignment direction did not correlate with the atomic arrangement of the Si(100) crystal since it varied over different regions of the sample, rotating by 90 degrees from top to bottom of an approximately 5 mm sample. Si crystallinity may still be important since alignment is not observed on amorphous glass. Surface functionalization is the key since alignment is only observed following the amidation reaction and not on NH2-functionalized, SH-functionalized, or bare Si(100) surfaces. Alignmen...Continue Reading

References

Mar 7, 2003·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Erich C WalterReginald M Penner
Feb 23, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Christopher J OrendorffCatherine J Murphy
Jun 9, 2005·Angewandte Chemie·Roey J AmirDoron Shabat
Aug 4, 2005·Journal of the American Chemical Society·Aneta J MieszawskaFrancis P Zamborini

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Citations

Aug 16, 2013·Accounts of Chemical Research·Titoo JainKasper Nørgaard
Sep 16, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Grzegorz W SławińskiFrancis P Zamborini
Nov 24, 2011·Nano Reviews·Panikkanvalappil R SajanlalThalappil Pradeep
Nov 18, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Mahshid ChekiniThomas Burgi
Jan 2, 2016·The Journal of Physical Chemistry Letters·Donglin XieDave E Dunstan
Apr 21, 2007·Small·Aneta J MieszawskaFrancis P Zamborini
Aug 23, 2007·Dalton Transactions : an International Journal of Inorganic Chemistry·C N R RaoA Govindaraj
Aug 23, 2016·Beilstein Journal of Nanotechnology·Majid K AbyanehLoredana Casalis
Apr 13, 2011·Nanoscale·Yugang Sun
Apr 30, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Hiroshi NakashimaKeiichi Torimitsu
Sep 1, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Grzegorz W Sławiński, Francis P Zamborini
Oct 4, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Tulashi Luitel, Francis P Zamborini
Jan 10, 2008·Journal of the American Chemical Society·Pierpaolo GrecoFabio Biscarini
Jan 31, 2008·Chemical Reviews·Matthew E StewartRalph G Nuzzo

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