A highly efficient red-emitting luminescent paper-based chemosensor for hydrogen sulfide

Abstract

The first discrete bimetallic europium(iii)/copper(ii) complex for the fast, sensitive and selective luminescent detection of both aqueous and gaseous hydrogen sulfide is described.

Design strategies and applications of novel functionalized phenazine derivatives: a review

“…Notably, N , N -dihydrophenazine could be used as a sensing material to capture and distinguish ions and or biomacromolecules. 96–109 Using the same functionalized strategy, Tian and co-workers 110 developed a supramolecular system based on bis-calix[4]pyrrole modified dihydrophenazine derivative 16 , which could detect dicarboxylate anions. Scheme 6 showed its synthetic route.…”

Detection of aqueous and gaseous hydrogen sulfide with lanthanide–macrocycle binary complexes

“…10 At a pH of 7.4, hydrogen sulfide predominantly exists as HS − . Even though there are a number of H 2 S sensors reported over the years, [11][12][13][14][15][16][17][18][19][20][21][22] with a few of them being lanthanide-based chemosensors, [11][12][13]15,16,20 improving sensitivity and selectivity in H 2 S detection still remains a challenge. Ideally, the sensor should have the capability to detect aqueous H 2 S at a micromolar level and gaseous H 2 S at parts per million ( ppm) levels, exhibit short reaction times to allow real-time monitoring, and be unaffected by interferences from the surrounding environment.…”

“…[24][25][26] Therefore, it was anticipated that the use of the macrocycle DO2A as an alternative ligand would significantly improve the stability of the [Ln(DO2A)(triazole-DPA)] − complex Ln•2 in comparison to sensor Eu•1, dissociates into the weakly luminescent bis species in aqueous solutions at micromolar concentrations. 20 Our previous study only investigated the [EuL 3 ] 3− complex Eu•1, 20 however in this study we were interested in whether the triazole-DPA moiety L was an appropriate sensitiser for terbium and if the sensor response was comparable to that of the europium analogue. The H 2 S sensing mechanism for these analogues, utilises the copper sequestration, as shown in Scheme 1.…”

Nozzle Electrode Point Discharge-Enhanced Oxidation and Portable Gas Phase Molecular Fluorescence Spectrometry for Sensitive Field Detection of Sulfide

“…21−23 As a result, CVG conversion of sulfide to H 2 S or SO 2 has been extensively used for sulfide detection by coupling with paper analytical devices. 24,25 To improve selectivity and accuracy, CVG gas phase molecular fluorescence spectrometry (GP-MFS) was developed to reliably quantify SO 2 via the detection of its molecular fluorescence with a commercial atomic fluorescence spectrometer equipped with a zinc hollow cathode lamp (Zn HCL). 26,27 The CVG-GP-MFS was further successfully employed for the selective and sensitive detection of sulfide after its oxidation to SO 2 by miniature point discharge (μPD).…”

“…Therefore, considerable efforts have been devoted to developing simple and sensitive methods for field detection and monitoring of sulfide. ,,, However, some of these methods are undertaken in the aqueous phase, thus inevitably suffering from severe matrix interference such as color and turbidity. Chemical vapor generation (CVG) can significantly improve sample introduction efficiency and separate analyte from the condensed aqueous phase, thus improving sensitivity and reducing matrix interference. − As a result, CVG conversion of sulfide to H 2 S or SO 2 has been extensively used for sulfide detection by coupling with paper analytical devices. , …”