Jump to main content
Jump to site search


Highly Sensitive Iridium(III) Complex-Based Phosphorescent Probe for Thiopheol Detection

Abstract

A cyclometalated iridium (III) complex (Ir-DNBS) was designed and synthesized as a high-performance phosphorescent thiophenol probe. Ir-DNBS displays distinct phosphorescence “off-on” response toward thiophenol with high selectivity, high sensitivity (detection limit: 2.5 nM) and fast response (10 min). It is noteworthy that the signaling phosphore of Ir-DNBS possesses relatively high photoluminescent (PL) quantum efficiency (ΦPL = 0.21) together with relatively long lifetime (τ = 2.07 μs), indicative of its potential in acquiring high temporal resolution. Ir-DNBS is also applicableto the detection of thiophenol in actual water sample with high recovery rate. Photophysical and spectral characterization results revealed that the probing mechanism of Ir-DNBS toward thiophenol lies in the thiolate-mediated cleavage reaction, resulting in suppressed photo-induced excited state electron transfer (PET) process in the reaction product.

Back to tab navigation

Supplementary files

Publication details

The article was received on 22 Jun 2017, accepted on 13 Sep 2017 and first published on 13 Sep 2017


Article type: Paper
DOI: 10.1039/C7DT02263H
Citation: Dalton Trans., 2017, Accepted Manuscript
  •   Request permissions

    Highly Sensitive Iridium(III) Complex-Based Phosphorescent Probe for Thiopheol Detection

    L. Xiong, L. Yang, S. Luo, Y. Huang and Z. Lu, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT02263H

Search articles by author

Spotlight

Advertisements