Spectrophotometric and RGB performances of a new tetraphenylcyclopenta-derived Schiff base for the quantification of cyanide ions

Abstract

In this communication, a new cyanide (CN−) ion selective chromogenic receptor (L) was developed by reacting 2,4-dinitrophenylhydrazine with 2,3,4,5-tetraphenylcyclopenta-2,4-dienone.

Facile Synthesis and Characterization of Ag/Ag2S Nanoparticles Enzymatically Grown In Situ and their Application to the Colorimetric Detection of Glucose Oxidase

“…Here we present an easy colorimetric method that could be integrated in a smartphone application for a rapid, easy and cos‐effective determination of the desired analyte. Some recent studies have been developed in this direction for a wide range of bioanalytical substances . To the best of our knowledge, enzymatic assays based on biocatalytic generation of silver sulfide NPs have never been reported before.…”

A Novel Thiophene-Based Fluorescent Chemosensor for the Detection of Zn2+ and CN−: Imaging Applications in Live Cells and Zebrafish

“…No movement of the proton signals was detected with addition of more amounts of CN − ( > 2 equiv.). On the basis of the previous studies and our experimental data [34,57,58], we can propose that the deprotonation of DHADC could cause the suppression of ICT (intramolecular charge transfer), which induces fluorescence turn-on of DHADC-H + species. With the analysis results of ESI-mass, 1 H NMR study and Job plot, the possible recognizing process of compound DHADC with CN − was depicted in Scheme 3.…”

A quinoline–benzothiazole-based chemosensor coupled with a smartphone for the rapid detection of In3+ ions

“…A calibration curve can be constructed for In 3+ quantication using the change in absorbance (RGB) values of various standard solutions of known concentration. [31][32][33] As shown in Fig. 8b, a good linearity range was obtained with R 2 ¼ 0.9983 and the estimated LOD and LOQ were found to be 0.75 mM (8.5 ppb) and 2.5 mM (285 ppb), respectively.…”