scholarly journals Folding of unstructured peptoids and formation of hetero-bimetallic peptoid complexes upon side-chain-to-metal coordination

2019 ◽  
Vol 10 (2) ◽  
pp. 620-632 ◽  
Author(s):  
Maria Baskin ◽  
Hui Zhu ◽  
Zheng-Wang Qu ◽  
Jordan H. Chill ◽  
Stefan Grimme ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Coordination ◽  
Side Chain

Metal ions initiate peptoids helicity that lead to positive allosteric cooperativity.

scholarly journals The structural chemistry of zinc(ii) and nickel(ii) dithiocarbamate complexes

2021 ◽  
Vol 19 (1) ◽  
pp. 974-986
Author(s):  
Tanzimjahan A. Saiyed ◽  
Jerry O. Adeyemi ◽  
Damian C. Onwudiwe
Keyword(s):  
Complex Formation ◽  
Metal Ions ◽  
Structural Properties ◽  
Binding Sites ◽  
Biological Systems ◽  
Structural Chemistry ◽  
Metal Coordination ◽  
Nickel Ions ◽  
Coordination Modes ◽  
Biomedical Fields

Abstract Dithiocarbamate complexes are of immense interest due to their diverse structural properties and extensive application in various areas. They possess two sulfur atoms that often act as the binding sites for metal coordination in a monodentate, bidentate, or anisodentate fashion. These different coordination modes enhance the possibility for complex formation and make them useful in different areas especially in biomedical fields. A synergy exists in the metal ions and dithiocarbamate moieties, which tends to exert better properties than the respective individual components of the complex. These improved properties have also been attributed to the presence of the C–S bonds. Zinc and nickel ions have been majorly found to bind to the dithiocarbamate in bidentate modes, and consequently different geometries have resulted from this interaction. The aim of this review is to present some studies on the synthesis, structural chemistry, and the relevance of zinc and nickel dithiocarbamates complexes especially in biological systems.

Siderophilin metal coordination. Difference ultraviolet spectroscopy of di-, tri-, and tetravalent metal ions with ethylenebis[(o-hydroxyphenyl)glycine]

Biochemistry ◽  
1981 ◽  
Vol 20 (24) ◽  
pp. 7033-7039 ◽  
Author(s):  
Vincent L. Pecoraro ◽  
Wesley R. Harris ◽  
Carl J. Carrano ◽  
Kenneth N. Raymond
Keyword(s):  
Metal Ions ◽  
Metal Coordination ◽  
Ultraviolet Spectroscopy

Preparation and characterization of novel Yellow-Green fluorescent polymerizable dye and its copolymer with application of highly selective sensor for cations iron

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Hanieh Shaki
Keyword(s):  
Metal Ions ◽  
Covalent Bond ◽  
Analytical Techniques ◽  
Side Chain ◽  
Content Type ◽  
Photo Induced Electron Transfer ◽  
Green Fluorescent ◽  
First Time ◽  
Acrylonitrile Polymer

Purpose In this work, A new 4–(2-aminoethylene) amino-N-(2-hydroxyethyl)-1,8-naphthalimide with intense green fluorescent was synthesized. This low molecular weight compound was immobilized by forming a covalent-bond with an acrylonitrile polymer containing carboxylic acid groups. The new prepared dye and self-coloured polymer were characterized by analytical techniques. Design/methodology/approach The synthesized compounds were characterized by TLC, DSC, FTIR, 1HNMR, 13CNMR, GPC, UV–visible and Fluorometery. The photophysical characteristics of the dye and polymer containing naphthalimide moiety in the side chain, were measured both in the absence and in the presence of Ag+, Cd+2, Co+2, Cr+3, Cu+2, Fe+3, Hg+2, Ni+2, Pb+2 and Zn+2 cations. Findings The results showed that the characterization of the synthesized dye and its polymer verified their structural correctness. It is shown that dye and polymer are photo-induced electron transfer (PET) fluorescent sensors which exhibit fluorescence quenching in the presence of metal ions. Among the various metal ions, both dye and polymer are more sensitive to Fe+3 cations. Originality/value This study is original. A 4–(2-aminoethylene) amino-N-(2-hydroxyethyl)-1,8-naphthalimide and its self-coloured polymer were synthesized for the first time, successfully.

scholarly journals Synthesis and Characterization of Two New Coordination Polymers Constructed from Azobenzene-4, 4′-Dicarboxylic Acid with Zinc (Ii) and Cd (Ii) 2, 2′-Bipyridine

2018 ◽  
Vol 7 ◽  
pp. 39-42
Author(s):  
Pramod Kumar Yadav
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Dicarboxylic Acid ◽  
Coordination Polymers ◽  
Molecular Structures ◽  
Metal Coordination ◽  
Synthesis And Characterization ◽  
Metal Coordination Polymers

Two transition metal coordination polymers [Zn(4,4′-ADA)(bpy)]n (1) and [Cd(4,4′-ADA)(bpy)(H2O)2]n (2) have been assembled from azobenzene-4,4′- dicarboxylic acid (H2ADA) with the help of 2,2′-bipyridine (bpy) ligand. The different molecular structures for complexes 1 and 2 formed from the same ligand (H2ADA) reveals the fact that organic linkers display different coordination preferences at different metal ions.

Selective and Sensitive Fluorescent Sensors for Metal Ions Based on Manipulation of Side-Chain Compositions of Poly(p-phenyleneethynylene)s

2004 ◽  
Vol 76 (21) ◽  
pp. 6513-6518 ◽  
Author(s):  
Zhen Chen ◽  
Cuihua Xue ◽  
Wei Shi ◽  
Fen-Tair Luo ◽  
Sarah Green ◽  
...  
Keyword(s):  
Metal Ions ◽  
Fluorescent Sensors ◽  
Side Chain
Sign in / Sign up

Export Citation Format

Share Document