Issue 17, 2013
From the journal:

Nanoscale

Heating efficiency of multi-walled carbon nanotubes in the first and second biological windows

Laura Martínez Maestro,a   Patricia Haro-González,a   Blanca del Rosal,a   Julio Ramiro,b   A. J. Caamaño,b   Elisa Carrasco,cd   Angeles Juarranz,d   Francisco Sanz-Rodríguez,d   José García Soléa  and  Daniel Jaque*a  

* Corresponding authors

a Fluorescence Imaging Group, Departamento de Física de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
E-mail: daniel.jaque@uam.es
Tel: +34 914975283

b Departamento de Teoría de la Señal y Comunicaciones, ETS Ingeniería de Telecomunicación, Universidad Rey Juan Carlos, Madrid, Spain

c Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-Departamento de Bioquímica, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain

d Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain

Abstract

Quantum dot based-thermometry, in combination with double beam confocal microscopy and infrared thermal imaging, has been used to investigate the heating efficiency of multi-walled carbon nanotubes (MWCNTs) under optical excitation within the first (808 nm) and second (1090 nm) biological windows as well as in the spectral region separating them (980 nm). It has been found that for the three excitation wavelengths the heating efficiency of MWCNTs (10 nm in diameter and 1.5 μm in length) is close to 50%. Despite this “flat” heating efficiency, we have found that the excitation wavelength is, indeed, critical during in vivo experiments due to the spectral dependence of both tissue absorption and scattering coefficients. It has been concluded that efficiency and selectivity of in vivo photothermal treatments based on MWCNTs are simultaneously optimized when laser irradiation lies within the first or second biological window.

Graphical abstract: Heating efficiency of multi-walled carbon nanotubes in the first and second biological windows

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Article information

DOI
https://doi.org/10.1039/C3NR01398G
Article type
Paper
Submitted
21 Mar 2013
Accepted
17 Jun 2013
First published
20 Jun 2013

Nanoscale, 2013,5, 7882-7889

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Heating efficiency of multi-walled carbon nanotubes in the first and second biological windows

L. M. Maestro, P. Haro-González, B. del Rosal, J. Ramiro, A. J. Caamaño, E. Carrasco, A. Juarranz, F. Sanz-Rodríguez, J. G. Solé and D. Jaque, Nanoscale, 2013, 5, 7882 DOI: 10.1039/C3NR01398G

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