Thin film mesoscale organization of nanoparticles by using biomolecular peptide tools

Emannouil Kasotakis; Athanasia Kostopoulou; Miguel Spuch-Calvar; Maria Androulidaki; Nikos T. Pelekanos; Antonios G. Kanaras; Anna Mitraki; Alexandros Lappas

doi:10.1117/12.2048292

24 March 2014 Thin film mesoscale organization of nanoparticles by using biomolecular peptide tools

Emannouil Kasotakis, Athanasia Kostopoulou, Miguel Spuch-Calvar, Maria Androulidaki, Nikos T. Pelekanos, Antonios G. Kanaras, Anna Mitraki, Alexandros Lappas

Author Affiliations +

Proceedings Volume 8955, Colloidal Nanoparticles for Biomedical Applications IX; 89551W (2014) https://doi.org/10.1117/12.2048292
Event: SPIE BiOS, 2014, San Francisco, California, United States

Abstract

Templating semiconductor nanoparticles’ growth on the surface of biological self-assembled molecules is a promising avenue over the limitations that top-down techniques may impose on device fabrication. We report on two-dimensional ordered structures of preformed TOPO (trioctylphosphine oxide) capped CdSe@ZnS core-shell quantum dots (Qdots) on self-assembled peptide fibrils. An amphiphilic peptide was employed both as ligand-exchange element (via its cysteine residues) and as a structural scaffold for the ordering of Qdots at the water-chloroform interface. We discuss the topological arrangement of the Qdots as imposed by the peptide fibril film and the impact of the assembly on the materials’ photoluminescent properties, which display signatures of long-range electronic energy transfer.

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Emannouil Kasotakis, Athanasia Kostopoulou, Miguel Spuch-Calvar, Maria Androulidaki, Nikos T. Pelekanos, Antonios G. Kanaras, Anna Mitraki, and Alexandros Lappas "Thin film mesoscale organization of nanoparticles by using biomolecular peptide tools", Proc. SPIE 8955, Colloidal Nanoparticles for Biomedical Applications IX, 89551W (24 March 2014); https://doi.org/10.1117/12.2048292

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KEYWORDS

Interfaces

Nanocrystals

Transmission electron microscopy

Nanoparticles

Luminescence

Nanolithography

Quantum dots

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