An ESIPT-ICT steered naphthylthioic-based ionic probe with dual emissive channels exhibiting CHEF and CHEQ effects.

A naphthylthioic-based emissive probe (M) bearing a hydroxyl and amine group was designed and synthesized a one-step Schiff base reaction process. The probe was characterized spectroscopically using H NMR, UV-Vis and fluorescence spectrophotometers. The probe turned out to be spectroscopically and colorimetrically selective and sensitive to multiple cations and anions.

A multi-colorimetric probe to discriminate between heavy metal cations and anions in DMSO-HO with high selectivity for Cu and CN: study of logic functions and its application in real samples.

A ditopic multi-colorimetric probe based on the phenylpridyl-thioic moiety (EN) was synthesized a Schiff base reaction mechanism and characterized using H NMR and UV-vis spectroscopy. The colorimetric analyses carried out revealed that EN was capable of discriminating between a number of heavy metal cations coordination induced charge transfer, as well as between anions through hydrogen bonding induced charge transfer, in DMSO-HO (9 : 1). In particular, the ditopic probe could spectrally and colorimetrically recognize the most toxic heavy metal cations of Cd, Pb and Hg, among others, in DMSO-HO.

A chromo-fluorogenic HMT sensor for Ag and the resultant HMT-Ag complex turn-off probe for F in DMSO: experimental and theoretical studies.

The photophysical properties of Hexamethylenetetramine () were investigated through physical methods and spectroscopically in dimethyl sulfoxide (DMSO) at ambient temperature. Evidently, turned out as a sensor, selective and sensitive to silver ion (Ag) only, among other cations, through colorimetric and fluorometric activities (observable by naked eye) and spectrally, both by UV-Vis and fluorescence spectroscopy. The resulting complex pedant () is highly responsive to the presence of fluoride ion (F) in aqueous soluble DMSO, evidenced by changes in absorption spectra as well as fluorescence quenching, upon addition of the respective ions.

A chromo-fluorogenic probe for detecting water traces in aprotic solvents based on C-symmetry dianthrimide-hydroxide complexes: experimental and theoretical studies.

A C-symmetry dianthrimide based probe (D) and its hydroxide complex (D-OH) are reported as a chromo-fluorogenic sensor for rapid and sensitive detection of trace amounts of water in polar aprotic solvents. Based on intramolecular charge transfer in the excited state, the pink-coloured probe binds with the hydroxide ions to induce a colorimetric response of the resulting complex (D-OH), green in colour. The hydroxide based complex is used as a HO or moisture sensor, tested in DMF and DCM, due to its high instability in moisture-containing organic solvents and paper materials/fabrics.

Correction: A colorimetric probe for the real-time naked eye detection of cyanide and hydroxide ions in tap water: experimental and theoretical studies.

Correction for 'A colorimetric probe for the real-time naked eye detection of cyanide and hydroxide ions in tap water: experimental and theoretical studies' by Veikko Uahengo et al., Analyst, 2019, 144, 6422-6431.

A naphthoquinone based colorimetric probe for real-time naked eye detection of biologically important anions including cyanide ions in tap water: experimental and theoretical studies.

A naphthoquinone based colorimetric sensor (N) bearing hydrazone receptors in aqueous media was developed and its recognition properties towards biologically important anions in DMSO-water mixture (9 : 1) were investigated using spectroscopic methods. The hydrazone based receptors showed selectivity towards anions (F, OH, CN and AcO), through naked eye observable colour changes, from green to light blue (F, CN and AcO) and violet (OH). The colour changes were concomitant with spectral changes.

A colorimetric probe for the real-time naked eye detection of cyanide and hydroxide ions in tap water: experimental and theoretical studies.

Herein, a colorimetric sensor (L) based on a naphthyl derivative bearing hydrazone receptors was synthesized via a one-step reaction process, and its recognition properties towards biologically important anions in an acetonitrile-water mixture were investigated by naked-eye observation and UV-Vis and H NMR spectroscopy. The molar addition of anions, such as TBAF, TBAOH, TBACN and TBAAcO, induced a significant red shift in the charge transfer band (Δλ = 73 nm, from 337 nm to 410 nm), in agreement with visible "naked eye" detectable colorimetric activities; in addition, soaked-in-L paper strips were prepared, which could significantly discriminate cyanide (KCN) and hydroxide (NaOH) ions dissolved in tap water via the litmus test method. This study was complemented by density functional theory computations to gain more insight into the interaction between L and anions.