Chromogenic detection of hydrogen sulfide using squarylium-based chemosensors

Ha Lim Noh, Byeong M. Oh, Young Ki Park, Hye W. Chun, Junyeop Lee, Jae Keon Kim, Jian Zheng, Daewoong Jung, Woosung Lee, Jong H. Kim

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Squarylium-based colorimetric hydrogen sulfide (H2S) chemosensors (SQ1, SQ2, and SQ3) were developed, and their detection properties were systematically characterized. SQ1 exhibited rapid and high resolution H2S sensing properties through significant color changes detectable by naked-eye with limit of detection as low as 7.2 ppb. SQ1 also showed excellent selectivity for H2S detection over other relevant anions and nucleophiles. Sensing mechanisms of SQ1 were investigated based on spectroscopic and 1H NMR analyses with quantum calculations. Furthermore, SQ1 showed an efficient response to H2S under versatile conditions in the solution, solid, and dyed fabric states, which suggests applicability of SQ1 to simple, low-cost, and practical H2S sensors.

Original languageEnglish
Article number118457
JournalSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume239
DOIs
StatePublished - 5 Oct 2020

Keywords

  • Colorimetric chemosensor
  • Hydrogen sulfide
  • Selectivity
  • Spectroscopic characterization
  • Squarylium derivative

Fingerprint

Dive into the research topics of 'Chromogenic detection of hydrogen sulfide using squarylium-based chemosensors'. Together they form a unique fingerprint.

Cite this