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Issue 46, 2018
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Seed-mediated synthesis of plasmonic gold nanoribbons using cancer cells for hyperthermia applications

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Abstract

A surfactant-less, seed mediated, biological synthesis of two dimensional (2-D) nanoribbons in the presence of breast cancer cells (MCF7) is demonstrated. The diameter and yield of nanoribbons are tunable via seeds and gold precursor concentration. Such crystalline nanoribbons serve to enhance the Raman signals over MCF7 cells. The side and slopes of the triangular nanoplatelets fused as nanoribbons exhibit plasmon excitement in quadrupole resonance modes in the infrared region. Consequently, when irradiated with an infrared laser they show an excellent photothermal effect and rapid rise in temperature. The experimental results verified by finite-difference time-domain (FTDT) calculations reveal the presence of wedge-plasmon polaritons propagating along the edges of the nanoribbons. These simulations confirm that long aspect ratio nanoribbon's edges and vertices act as an active optical waveguide, allowing for heat propagation along the long axis, killing cancer cells in the process at lower power doses.

Graphical abstract: Seed-mediated synthesis of plasmonic gold nanoribbons using cancer cells for hyperthermia applications

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Supplementary files

Article information


Submitted
24 Aug 2018
Accepted
17 Oct 2018
First published
17 Oct 2018

This article is Open Access

J. Mater. Chem. B, 2018,6, 7573-7581
Article type
Communication

Seed-mediated synthesis of plasmonic gold nanoribbons using cancer cells for hyperthermia applications

A. V. Singh, Y. Alapan, T. Jahnke, P. Laux, A. Luch, A. Aghakhani, S. Kharratian, M. C. Onbasli, J. Bill and M. Sitti, J. Mater. Chem. B, 2018, 6, 7573
DOI: 10.1039/C8TB02239A

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