AI Article Synopsis

  • The study examined how α-hydroxy acids like L-Tartaric acid and L-Malic acid form complexes with d-electron metal ions (copper, cobalt, nickel) in aqueous solutions.
  • Potentiometric measurements and computer analysis were used to determine the stability constants of these complexes.
  • Spectroscopic methods (EPR, UV-Vis, CD, IR) revealed that dimers form with copper(II) ions while monomers form with cobalt(II) and nickel(II) ions.

Article Abstract

Binary complexes of α-hydroxy acids (L-Tartaric acid and L-Malic acid) with d-electron metal ions (copper, cobalt, nickel) were investigated. Potentiometric measurements have been performed in aqueous solution with computer analysis of the data for determination of the stability constants of complexes formed in the studied systems. The coordination mode of the complexes was defined using spectroscopic methods: electron paramagnetic resonance (EPR), ultraviolet-visible (UV-Vis), circular dichroism (CD), and infrared (IR). Results of the equilibrium studies have provided evidence for the formation of dimers with copper(II) ions and monomers with cobalt(II) and nickel(II) ions.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8433706PMC
http://dx.doi.org/10.3390/molecules26175290DOI Listing

Publication Analysis

Top Keywords

metal ions
8
influence d-electron
4
d-electron divalent
4
divalent metal
4
ions
4
ions complex
4
complex formation
4
formation l-tartaric
4
l-tartaric l-malic
4
l-malic acids
4

Similar Publications

Superior Multimodal Luminescence in a Stable Single-Host Nanomaterial with Large-Scale Synthesis for High-Level Anti-Counterfeiting and Encryption.

Adv Sci (Weinh)

January 2025

Key Laboratory for High Efficiency Energy Conversion Science and Technology of Henan Province, International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, School of Physics and Electronics, Henan University, Kaifeng, 475004, P. R. China.

Multimode luminescent materials exhibit tunable photon emissions under different excitation or stimuli channels, endowing them high encoding capacity and confidentiality for anti-counterfeiting and encryption. Achieving multimode luminescence into a stable single material presents a promising but remains a challenge. Here, the downshifting/upconversion emissions, color-tuning persistent luminescence (PersL), temperature-dependent multi-color emissions, and hydrochromism are integrated into Er ions doped CsNaYbCl nanocrystals (NCs) by leveraging shallow defect levels and directed energy migration.

View Article and Find Full Text PDF

An easy-to-synthesize aggregation-induced emission (AIE) active Schiff base HNSA was obtained by condensing equimolar amount of 3-hydroxy-2-naphthohydrazide and salicylaldehyde. In pure DMSO, HNSA is non-fluorescent, but increasing the HEPES (HO, 10 mM, pH 7.4) fraction (f) ≥ 90% showed an intense green fluorescence with maximum fluorescence intensity at 515 nm.

View Article and Find Full Text PDF

Dipicolylamine Derivatives Bearing Pyrene and Anthracene as Molecular Probes for Cu and HS.

J Fluoresc

January 2025

Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, No. 100, Daxue East Road, Nanning, Guangxi, 530004, China.

Two dipicolylamine (DPA) derivatives with the pyrene and anthracene groups, 1-(pyren-1-yl)-N, N-bis-(pyridine-2-ylmethyl)benzylamine (L1) and 1-(anthracen-9-yl)-N, N-bis-(pyridine-2-ylmethyl)benzylamine (L2) were synthesized, characterized, and their affinitive properties for metal ions were studied. The mass spectroscopy and Job's plots showed that L1 and L2 reacted with Cu and formed complexes [Cu(L1)(solvent)] (L1-Cu) and [Cu(L2)(solvent)] (L2-Cu), respectively. Both L1 and L2 were fluorescent probes recognizing Cu via the emission quenching and further detecting HS via the emission revival.

View Article and Find Full Text PDF

Integrating noble metal nanostructures, specifically silver nanoparticles, into sensor designs has proven to enhance sensor performance across key metrics, including response time, stability, and sensitivity. However, a critical gap remains in understanding the unique contributions of various synthesis parameters on these enhancements. This study addresses this gap by examining how factors such as temperature, growth time, and choice of capping agents influence nanostructure shape and size, optimizing sensor performance for diverse conditions.

View Article and Find Full Text PDF

Polyhydroxy starch with abundant hydroxyls and a unique structure enables uniform Zn deposition.

Chem Commun (Camb)

January 2025

Laboratory of Advanced Materials, Aqueous Batteries Center, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China.

Zinc metal is a promising anode material for zinc-ion batteries (ZIBs), but severe side reactions and dendrite formation hinder its commercialization. In this study, starch is introduced into the ZnSO electrolyte for stabilizing the Zn anode. With abundant hydroxyl groups, starch can reconstruct the H-bond system in the electrolyte, suppressing side reactions.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!