Virus-templated iridium oxide-gold hybrid nanowires for electrochromic application

Nanoscale
Yoon Sung NamAngela M Belcher

Abstract

A highly porous electrode comprised of biologically templated iridium oxide-gold (IrO(2)-Au) hybrid nanowires is introduced for electrochromic applications. A filamentous M13 virus is genetically engineered to display IrO(2)-binding peptides on the viral surface and used as a template for the self-assembly of IrO(2) nanoclusters into a nanowire. The open porous morphology of the prepared nanowire film facilitates ion transport. Subsequently, the redox kinetics of the IrO(2) nanowires seems to be limited by the electric resistance of the nanowire film. To increase the electron mobility in the nanowires, gold nanoparticles are chemically linked to the virus prior to the IrO(2) mineralization, forming a gold nanostring structure along the long axis of the virus. The resulting IrO(2)-Au hybrid nanowires exhibit a switching time of 35 ms for coloration and 25 ms for bleaching with a transmission change of about 30.5% at 425 nm. These values represent almost an order of magnitude faster switching responses than those of an IrO(2) nanowire film having the similar optical contrast. This work shows that genetically engineered viruses can serve as versatile templates to co-assemble multiple functional molecules, enabling control of the e...Continue Reading

References

Jun 5, 2003·Proceedings of the National Academy of Sciences of the United States of America·Chuanbin MaoAngela M Belcher
Aug 31, 2004·Science·Zhuangchun WuAndrew G Rinzler
Feb 2, 2006·Nature Materials·Claes-Göran Granqvist
May 29, 2008·Accounts of Chemical Research·Seung Il Cho, Sang Bok Lee
Feb 12, 2009·ACS Nano·Chunrong XiongKenneth J Balkus
Jan 19, 2010·Journal of the American Chemical Society·Yoon Sung NamAngela M Belcher
Apr 13, 2010·Nature Nanotechnology·Yoon Sung NamAngela M Belcher

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Citations

Jul 9, 2013·Journal of Nanobiotechnology·Anna PetrovGerald F Audette
Oct 16, 2015·Nature Materials·Heechul ParkAngela M Belcher
May 6, 2015·ACS Applied Materials & Interfaces·Na-Mei LiWei-Ming Zhang
Jun 18, 2015·Chemical Society Reviews·Jiale HuangQingbiao Li
Sep 29, 2015·ACS Applied Materials & Interfaces·Mi Hwa OhYoon Sung Nam
May 7, 2016·Chemical Society Reviews·Amy M Wen, Nicole F Steinmetz
Nov 16, 2013·ACS Nano·Chang Kyu JeongKeon Jae Lee
Dec 3, 2013·Science and Technology of Advanced Materials·MaryJoe K Rice, Warren C Ruder
May 7, 2019·Pharmaceutics·Esen SokulluMarc A Gauthier
Sep 7, 2015·Journal of Materials Chemistry. B, Materials for Biology and Medicine·D VilonaM Bonchio
Sep 13, 2014·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·S SirotkinJ L Van Etten
Apr 5, 2018·Analytical Chemistry·Denise CapoferriArben Merkoçi
Dec 29, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Dong Jae LeeMoon Young Yang
Sep 6, 2017·ACS Applied Materials & Interfaces·Shanmugam ManivannanKyuwon Kim

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