Gold nanoisland films as reproducible SERS substrates for highly sensitive detection of fungicides

ACS Applied Materials & Interfaces
Boris N KhlebtsovNikolai G Khlebtsov

Abstract

A wet-chemical approach is used to fabricate centimeter-scale gold nanoisland films (NIFs) with tunable morphology of islands and with strong electromagnetic coupling between them. The approach consists in a uniform seeding of small gold nanoparticles on a glass or silicon substrate, followed by controllable growth of the seeds into small nanoislands. A special technique for TEM sampling was developed to follow the gradual formation of larger-sized isolated nanoparticles, nanoislands of sintered overgrown seeds, and a complete gold layer with nanoscale cracks. The electromagnetic field distribution inside the fabricated NIFs was calculated by FDTD simulations applied to actual TEM images of the fabricated samples rather than to artificial models commonly used. SERS measurements with 1,4-aminothiophenol (ATP) molecules demonstrated the analytical enhancement factor about of 10(7) and the fundamental enhancement factor about of 10(8) for optimized substrates. These values were at least 1 order of magnitude higher than that for self-assembled arrays of gold nanostars and silver nanocubes. SERS spectra of independent samples demonstrated good sample-to-sample reproducibility in terms of the relative standard deviation (RSD) of the ...Continue Reading

References

Sep 1, 1987·Analytical Chemistry·A M Alak, T Vo-Dinh
Jun 24, 2003·Nature Materials·Aurélie Lafuma, David Quéré
Apr 4, 2006·Chemical Communications : Chem Comm·Alexander Wei
Jul 13, 2006·Faraday Discussions·Michael J Natan
Jul 21, 2006·The Journal of Physical Chemistry. B·Gang ChangKazuyuki Hirao
Jul 21, 2006·The Journal of Physical Chemistry. B·Adam D McFarlandRichard P Van Duyne
Apr 27, 2007·Analytical Chemistry·Wolfgang HaissDavid G Fernig
Apr 30, 2008·Chemical Society Reviews·Nicholas P W Pieczonka, Ricardo F Aroca
Sep 3, 2008·Journal of the American Chemical Society·Jon P CamdenRichard P Van Duyne
Apr 2, 2010·ACS Applied Materials & Interfaces·Elisabeth GalopinRabah Boukherroub
May 4, 2011·Proceedings of the National Academy of Sciences of the United States of America·Ramón A Alvarez-PueblaLuis M Liz-Marzán
Nov 10, 2011·British Journal of Community Nursing·Quinten Clarkson
May 29, 2012·Nature Materials·Laura Rodríguez-LorenzoMolly M Stevens
Jan 10, 2013·Annual Review of Food Science and Technology·Ana Paula CraigJoseph Irudayaraj
May 24, 2013·Nanoscale Research Letters·Mikhail Yu TsvetkovNikolai G Khlebtsov
Mar 26, 2014·Nano Letters·Yu ZhouChad A Mirkin

❮ Previous
Next ❯

Citations

Jan 30, 2016·ACS Applied Materials & Interfaces·Maria Caterina GiordanoFrancesco Buatier de Mongeot
Jul 1, 2015·ACS Applied Materials & Interfaces·Alexandra N SeveryukhinaAlexey M Yashchenok
Dec 18, 2016·ACS Applied Materials & Interfaces·Deribachew BekanaJing-Fu Liu
Dec 14, 2016·ACS Nano·Paolo MatteiniRoberto Pini
Mar 1, 2016·Beilstein Journal of Nanotechnology·Martina BanchelliGabriella Caminati
Sep 18, 2020·Bulletin of Environmental Contamination and Toxicology·Mingtao Li, Xiang Zhang
Sep 16, 2020·Analytical Methods : Advancing Methods and Applications·Qiwen BaoWuliji Hasi
Mar 7, 2017·Biochemistry. Biokhimii︠a︡·L A Dykman, N G Khlebtsov
Jan 20, 2018·Scientific Reports·Martina BanchelliPaolo Matteini
Jun 6, 2019·Beilstein Journal of Nanotechnology·Malwina LiszewskaPiotr Nyga
Oct 18, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Mingming HanZhimin Zhang
Jan 10, 2021·Nanomaterials·Lucia CavigliFulvio Ratto
Jan 26, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Siqingaowa HanWuliji Hasi
Oct 30, 2020·Optics Express·Wang ZhengkunZhang Jie

❮ Previous
Next ❯

Related Concepts

Related Feeds

Antifungals

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.