The effect of the oxygen scavenging system on the pH of buffered sample solutions: In the context of single-molecule fluorescence measurements

Sung Eun Kim, Il Buem Lee, Seok Cheol Hong

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4 Citations (Scopus)


In single-molecule fluorescence experiment, the oxygen scavenging system is indispensable for avoiding photo-bleaching of fluorescent dyes. Here we report that the gloxy-based oxygen scavenging system commonly used in single molecule fluorescence experiments can disturb the solution pH considerably. To track in situ pH change, we utilized the pH-sensitive conformational transition of i-motif and examined the transition with ensemble and single-molecule FRET measurements. Based on our results, we also suggested several practical remedies for the stability of the solution pH.

Original languageEnglish
Pages (from-to)958-962
Number of pages5
JournalBulletin of the Korean Chemical Society
Issue number3
Publication statusPublished - 2012 Mar 20



  • Gloxy
  • I-motif
  • Oxygen scavenging system
  • PH
  • Single-molecule fluorescence

ASJC Scopus subject areas

  • Chemistry(all)

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