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Open AccessArticle

Plasmonics Meets Biology through Optics

Beam Engineering for Advanced Measurements Company, Winter Park, FL 32789, USA
Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 291, 00161 Rome, Italy
CNR-Lab. Licryl, Institute NANOTEC, 87036 Arcavacata di Rende, Italy
Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy
CNR-IPCF, National Research Council of Italy, Institute for Physical and Chemical Processes, Bari Division, Via Orabona 4, 70126 Bari, Italy
Department of Physics, University of Calabria, Centre of Excellence for the Study of Innovative Functional Materials, 87036 Arcavacata di Rende, Italy
Interdisciplinary Institute B, Segre of the National Academy dei Lincei, 00165 Rome, Italy
Author to whom correspondence should be addressed.
Academic Editor: Lorenzo Rosa
Nanomaterials 2015, 5(2), 1022-1033;
Received: 17 April 2015 / Revised: 29 May 2015 / Accepted: 2 June 2015 / Published: 9 June 2015
(This article belongs to the Special Issue Nanophotonic Materials)
Plasmonic metallic nanoparticles (NPs) represent a relevant class of nanomaterials, which is able to achieve light localization down to nanoscale by exploiting a phenomenon called Localized Plasmon Resonance. In the last few years, NPs have been proposed to trigger DNA release or enhance ablation of diseased tissues, while minimizing damage to healthy tissues. In view of the therapeutic relevance of such plasmonic NPs; a detailed characterization of the electrostatic interaction between positively charged gold nanorods (GNRs) and a negatively charged whole-genome DNA solution is reported. The preparation of the hybrid biosystem has been investigated as a function of DNA concentration by means of ζ-potential; hydrodynamic diameter and gel electrophoresis analysis. The results have pointed out the specific conditions to achieve the most promising GNRs/DNA complex and its photo-thermal properties have been investigated. The overall study allows to envisage the possibility to ingeniously combine plasmonic and biological materials and, thus, enable design and development of an original non invasive all-optical methodology for monitoring photo-induced temperature variation with high sensitivity. View Full-Text
Keywords: nanomaterials; plasmonics; DNA; optics nanomaterials; plasmonics; DNA; optics
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MDPI and ACS Style

De Sio, L.; Caracciolo, G.; Annesi, F.; Placido, T.; Pozzi, D.; Comparelli, R.; Pane, A.; Curri, M.L.; Agostiano, A.; Bartolino, R. Plasmonics Meets Biology through Optics. Nanomaterials 2015, 5, 1022-1033.

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