Ultra narrow PbS nanorods with intense fluorescence

Somobrata Acharya, Ujjal K. Gautam, Toshio Sasaki, Yoshio Bandog, Yuval Golan, Katsuhiko Ariga

Research output: Contribution to journalArticlepeer-review

89 Scopus citations


We report on the narrowest "free" quantum rods of PbS with 1.7 nm diameter produced in a single step under bench-top reaction conditions. The nanorods exhibit molecule-like discrete narrow optical behavior with high fluorescence quantum yield. We propose a new macroscopic vortex assembly formation by simple spin casting route. Interestingly, the pattern generates fluorescence along its line from the nanorod domains. The ultra narrow nanorods with strong discrete fluorescence and robust stability could be useful in biological labeling, fluorescence resonance energy transfer, and optoelectronics applications, as well as to verify the theories in the very strong confinement regime.

Original languageEnglish
Pages (from-to)4594-4595
Number of pages2
JournalJournal of the American Chemical Society
Issue number14
StatePublished - 9 Apr 2008

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry


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