Hg²⁺and Cd²⁺binding of a bioinspired hexapeptide with two cysteine units constructed as a minimalistic metal ion sensing fluorescent probe

Abstract

Efficient and selective Hg2+ binding of a hexapeptide containing two cysteine residues is demonstrated both in solution and immobilized forms.

AsIII Selectively Induces a Disorder-to-Order Transition in the Metalloid Binding Region of the AfArsR Protein

“…The detected transformation of spectra between 1.0 and 1.5 equiv of Hg II per ligand, leading to a weak absorption above ∼240 nm but an absorbance increase below ca. 225 nm, is in accord with the conversion of the {HgS 3 } species into a structure with Hg II ions coordinated in a {HgS 2 } environment. − …”

Study on Cd2+ Determination Using Bud‐like Poly‐L‐Tyrosine/Bi Composite Film Modified Glassy Carbon Electrode Combined with Eliminating of Cu2+ Interference by Electrodeposition

“…In order to improve the electrical conductivity of PBS solution, KCl was added to maintain 5.0 mmol • L À 1 . The pH of the test solution has a certain influence on the existing forms of Cd 2 + ions and the coordination ability of the polymer membrane [43]. If the test solution is too acidic, it is easy to cause hydrogen evolution when deposited Bi 3 + and Cd 2 + ions, which ultimately affects the enrichment of Cd 2 + ions.…”

Exploitation of a 1D coordination polymer as a portable kit for an eye-catching fluorometric response towards sensing of trivalent cations

“…[5][6][7][8][9][10][11][12][13][14] Several CPs have been studied for sensor applications because of their ability to detect hazardous and physiologically vigorous metal ions. [15][16][17][18][19][20][21][22] CPs are more attractive in the sensor field due to higher stability but also their recyclability and "tailor"-made easy synthetic procedure. During this stage of development, scientists expose the appropriate combination of metal ions and π-conjugated organic ligands that allow it to be functionalized as a fluorescence-based sensor.…”