Oligonucleotide-stabilized Ag nanocluster fluorophores

Chris I. Richards, Sungmoon Choi, Jung Cheng Hsiang, Yasuko Antoku, Tom Vosch, Angelo Bongiorno, Yih Ling Tzeng, Robert M. Dickson

Research output: Contribution to journalArticlepeer-review

798 Scopus citations

Abstract

Single-stranded oligonucleotides stabilize highly fluorescent Ag nanoclusters, with emission colors tunable via DNA sequence. We utilized DNA microarrays to optimize these scaffold sequences for creating nearly spectrally pure Ag nanocluster fluorophores that are highly photostable and exhibit great buffer stability. Five different nanocluster emitters have been created with tunable emission from the blue to the near-IR and excellent photophysical properties. Ensemble and single molecule fluorescence studies show that oligonucleotide encapsulated Ag nanoclusters exhibit significantly greater photostability and higher emission rates than commonly used cyanine dyes.

Original languageEnglish
Pages (from-to)5038-5039
Number of pages2
JournalJournal of the American Chemical Society
Volume130
Issue number15
DOIs
StatePublished - Apr 16 2008

ASJC Scopus subject areas

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

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