Development of highly luminescent and cytocompatible near-IR-emitting aqueous Ag2S quantum dots

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Hocaoglu I., Cizmeciyan M. N., ERDEM R., ÖZEN C., KURT A., Sennaroglu A., ...More

JOURNAL OF MATERIALS CHEMISTRY, vol.22, no.29, pp.14674-14681, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 29
  • Publication Date: 2012
  • Doi Number: 10.1039/c2jm31959d
  • Journal Name: JOURNAL OF MATERIALS CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.14674-14681
  • Middle East Technical University Affiliated: Yes

Abstract

Colloidally stable and highly luminescent near-IR emitting Ag2S quantum dots (NIRQDs) were prepared by a very simple aqueous method using 2-mercaptopropionic acid (2MPA) as a coating. Emission of Ag2S-2MPA NIRQDs can be tuned between 780 and 950 nm. These NIRQDs have photoluminescence quantum yields (PLQY) around 7-39% and exhibit excellent cytocompatibility even at 600 mu g mL(-1) in NIH/3T3 cells. With such improved properties, Ag2S-2MPA NIRQDs have a great potential in practical bio-applications.