Fine-tuning longitudinal plasmon resonances of nanorods by thermal reshaping in aqueous media

Nanotechnology
Khee Chaw Ng, Wenlong Cheng

Abstract

Metallic nanoparticles that support surface plasmons are potential building units for future nanophotonic circuits, metamaterials, high-density optical data storage, etc. Many of these applications require the ability to 'dial-up' the desired plasmonic resonance modes and frequencies with high precision. Here, we demonstrate a thermal reshaping route that can be used to tailor longitudinal plasmon resonance energies of gold nanorods almost continuously from ~800 to ~560 nm. The longitudinal plasmon resonance wavelength exhibits an exponential decay function of the thermal annealing time at a given temperature. This correlates with the transmission electron microscopy characterization (TEM) which showed that the nanorod aspect ratio decreases exponentially with time, accompanying a gradual shape transformation from rod to sphere. The exponential decay half-time decreases with increasing annealing temperatures, with a value of 1.43 × 10(5) s at 50 °C down to 0.02 × 10(5) s at 100 °C. Our experimental results show that the shape transformation could be attributed to desorption of silver ions and side facet-binding Ag-Br-CTA ligands, which therefore promote the side growth leading to nanorod fattening. Compared to other synthetic m...Continue Reading

References

Jan 31, 2004·Technology in Cancer Research & Treatment·Christopher LooRebekah Drezek
Jul 15, 2004·Journal of the American Chemical Society·Tapan K Sau, Catherine J Murphy
Feb 17, 2006·Physical Chemistry Chemical Physics : PCCP·Hristina PetrovaPaul Mulvaney
Mar 3, 2006·The Journal of Physical Chemistry. B·Christopher J Orendorff, Catherine J Murphy
Aug 4, 2007·Lasers in Medical Science·Xiaohua HuangMostafa A El-Sayed
May 24, 2008·Nature Materials·Jeffrey N AnkerRichard P Van Duyne
Sep 3, 2008·Chemical Society Reviews·Viktor MyroshnychenkoF Javier García de Abajo
Nov 4, 2008·Annual Review of Physical Chemistry·Xianmao LuYounan Xia
May 1, 2009·Nature Materials·Wenlong ChengDan Luo
Dec 17, 2009·Journal of the American Chemical Society·Martin J MulvihillPeidong Yang
Mar 20, 2010·Nature·Jian Feng LiZhong Qun Tian
Oct 1, 2005·Nanotechnology·Xiaoge HuShaojun Dong
Apr 19, 2011·Nature Nanotechnology·Shawn J TanWenlong Cheng

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Citations

Aug 21, 2013·ACS Applied Materials & Interfaces·Emily A UntenerSaber M Hussain
Jul 19, 2012·ACS Nano·James Chen Yong KahKimberly Hamad-Schifferli
Dec 11, 2014·Materials Science & Engineering. C, Materials for Biological Applications·Dan KaiXian Jun Loh
Dec 1, 2015·ACS Applied Materials & Interfaces·William Joshua KennedyJeffery W Baur
Dec 19, 2013·Angewandte Chemie·Zhening ZhuZhiyong Tang
Sep 1, 2018·Nanoscale·Brian SzychowskiMarie-Christine Daniel
Jul 25, 2015·Nanotechnology·Judith LangerLuis M Liz-Marzán
Oct 19, 2017·PloS One·David Harris-BirtillDaniel S Elson
Nov 28, 2018·ACS Applied Materials & Interfaces·William J KennedyGregory J Ehlert
Oct 15, 2021·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Ainash Garifullina, Amy Q Shen

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