Non-blinking and photostable upconverted luminescence from single lanthanide-doped nanocrystals

ORAL

Abstract

The development of probes for single-molecule imaging has dramatically facilitated the study of individual molecules in cells and other complex environments. Single-molecule probes ideally exhibit good brightness, uninterrupted emission, resistance to photobleaching, and minimal spectral overlap with cellular autofluorescence. However, most single-molecule probes are imperfect in several of these aspects, and none have been shown to possess all of these characteristics. In this talk, I will show that individual lanthanide-doped upconverting nanoparticles (UCNPs) emit non-blinking and photostable near-infrared to visible upconverted luminescence when excited by a 980-nm continuous wave laser, suggesting that UCNPs are ideally suited for single-molecule imaging experiments.

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Authors

  • Shiwei Wu

    The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720

  • Gang Han

    The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720

  • Delia Milliron

    The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720

  • Shaul Aloni

    The Molecular Foundry, Lawrence Berkeley Labs, The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720

  • Virginia Altoe

    The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720

  • Dmitri Talapin

    Department of Chemistry, University of Chicago, Chicago, IL 60637

  • Bruce Cohen

    The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720

  • Jim Schuck

    The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720