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Ambient large-scale template-mediated synthesis of high-aspect ratio single-crystalline, chemically doped rare-earth phosphate nanowires for bioimaging

ACS Nano. 2010 Jan 26;4(1):99-112. doi: 10.1021/nn901057y.

Abstract

A simple and effective template-mediated protocol has been developed for the large-scale, room-temperature preparation of high-aspect-ratio, single-crystalline Tb-doped CePO(4) nanowires, measuring approximately 12 nm in diameter and over 10 mum in length. Moreover, we also isolated sheaf-like bundles of nanostructures. The synthesis mechanism likely involved a crystal splitting step. The resulting nanowires demonstrated an intense redox-sensitive green photoluminescence, which was exploited, in addition to their inherently high biocompatibility and low toxicity, for potential applications in biological imaging and labeling of cells.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Animals
  • Cerium / chemistry*
  • Cerium / metabolism*
  • Cerium / toxicity
  • Fluorescent Dyes / chemical synthesis
  • Fluorescent Dyes / chemistry
  • Fluorescent Dyes / metabolism
  • Fluorescent Dyes / toxicity
  • HeLa Cells
  • Humans
  • Luminescent Measurements
  • Materials Testing
  • Microscopy, Electron
  • Molecular Imaging / methods*
  • Nanowires / chemistry*
  • Phosphates / chemical synthesis
  • Phosphates / chemistry*
  • Phosphates / metabolism*
  • Phosphates / toxicity
  • Spectrophotometry, Ultraviolet
  • Temperature
  • Terbium / chemistry*
  • X-Ray Diffraction

Substances

  • Fluorescent Dyes
  • Phosphates
  • Terbium
  • Cerium
  • cerium phosphate