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Optica Publishing Group
  • Frontiers in Optics 2008/Laser Science XXIV/Plasmonics and Metamaterials/Optical Fabrication and Testing
  • OSA Technical Digest (CD) (Optica Publishing Group, 2008),
  • paper FWE5
  • https://doi.org/10.1364/FIO.2008.FWE5

Directional Absorption and Emission in Hybrid Polymer-Quantum Dot Nanostructures Studied by Scanning Probe and Fluorescence Microscopy

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Abstract

Inorganic colloidal quantum dot systems whose surfaces are coordinated with conjugated organic ligands represent an interesting hybrid system in which the photophysical properties (spectral, temporal, and polarization) are strongly modified with respect to either inorganic or organic component. The presence of semiconducting ligands linked to the nanocrystal surface presents an environment where both energy-and charge-transfer are facilitated by the close (≈ 3.5 nm) center-to-center chromophore spacing. We will discuss highly modified blinking kinetics, enhanced ‘deep-trap’ emission, and a strong linear polarization in both absorption and emission associated with the quantum dot core. These phenomena are studied in individual nanostructures using fluorescence microscopy in combination with scanning probe techniques to relate structure to photophysical characteristics.

© 2008 Optical Society of America

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