Quantum dots coordinated with conjugated organic ligands: new nanomaterials with novel photophysics
1 Department of Chemistry, University of Massachusetts, Amherst, MA, 01003, USA
2 Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA, 01003, USA
Nanoscale Research Letters 2007, 2:282-290 doi:10.1007/s11671-007-9062-8Published: 6 June 2007
CdSe quantum dots functionalized with oligo-(phenylene vinylene) (OPV) ligands (CdSe-OPV nanostructures) represent a new class of composite nanomaterials with significantly modified photophysics relative to bulk blends or isolated components. Single-molecule spectroscopy on these species have revealed novel photophysics such as enhanced energy transfer, spectral stability, and strongly modified excited state lifetimes and blinking statistics. Here, we review the role of ligands in quantum dot applications and summarize some of our recent efforts probing energy and charge transfer in hybrid CdSe-OPV composite nanostructures.