Nature Communications (Jun 2020)

Ultrafast photochemistry produces superbright short-wave infrared dots for low-dose in vivo imaging

  • Harrisson D. A. Santos,
  • Irene Zabala Gutiérrez,
  • Yingli Shen,
  • José Lifante,
  • Erving Ximendes,
  • Marco Laurenti,
  • Diego Méndez-González,
  • Sonia Melle,
  • Oscar G. Calderón,
  • Enrique López Cabarcos,
  • Nuria Fernández,
  • Irene Chaves-Coira,
  • Daniel Lucena-Agell,
  • Luis Monge,
  • Mark D. Mackenzie,
  • José Marqués-Hueso,
  • Callum M. S. Jones,
  • Carlos Jacinto,
  • Blanca del Rosal,
  • Ajoy K. Kar,
  • Jorge Rubio-Retama,
  • Daniel Jaque

DOI
https://doi.org/10.1038/s41467-020-16333-2
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 12

Abstract

Read online

Deep tissue imaging has been limited by the low brightness of probes emitting in the second near-infrared window. Here, the authors use femtosecond laser irradiation to grow a protective shell on Ag2S nanoparticles, achieving 80-fold quantum yield enhancement and imaging with low excitation intensities.