Influence of d-Electron Divalent Metal Ions in Complex Formation with L-Tartaric and L-Malic Acids

Zabiszak, Michał; Frymark, Justyna; Nowak, Martyna; Grajewski, Jakub; Stachowiak, Klaudia; Kaczmarek, Małgorzata T.; Jastrząb, Renata

doi:10.3390/molecules26175290

Cited by 13 publications

(2 citation statements)

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“…In comparison, THPB-Au NPs exhibit the strongest binding ability toward Ni(II)–tartrate and Ni(II)–citrate. Both complexes mainly exist as [Ni(tartrate)(OH) 3 ] 3– and [Ni(citrate) 2 ] 4– at pH 11, , which should exert stronger electrostatic interactions with THPB-Au NPs than the less charged polyhydroxy-metal compounds (i.e., Ni(OH) 3 – ), the dissociation products of other Ni(II) complexes. Also, the higher concentrations of Ni(II) species expand the radian, indicating that the concentration is directly proportional to the change of absorbance (Figure a1–d1).…”

Section: Resultsmentioning

confidence: 99%

Engineering Nano-Au-Based Sensor Arrays for Identification of Multiple Ni(II) Complexes in Water Samples

Chen

Pan

et al. 2023

Environ. Sci. Technol.

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Advanced techniques for nickel (Ni(II)) removal from polluted waters have long been desired but challenged by the diversity of Ni(II) species (most in the form of complexes) which could not be readily discriminated by the traditional analytical protocols. Herein, a colorimetric sensor array is developed to address the above issue based on the shift of the UV−vis spectra of gold nanoparticles (Au NPs) after interaction with Ni(II) species. The sensor array is composed of three Au NP receptors modified by N-acetyl-L-cysteine (NAC), tributylhexadecylphosphonium bromide (THPB), and the mixture of 3-mercapto-1-propanesulfonic acid and adenosine monophosphate (MPS/AMP), to exhibit possible coordination, electrostatic attraction, and hydrophobic interaction toward different Ni(II) species. Twelve classical Ni(II) species were selected as targets to systematically demonstrate the applicability of the sensor array under various conditions. Multiple interactions with Ni(II) species were evidenced to trigger the diverse Au NP aggregation behaviors and subsequently produce a distinct colorimetric response toward each Ni(II) species. With the assistance of multivariate analysis, the Ni(II) species, either as the sole compound or as mixtures, can be unambiguously discriminated with high selectivity in simulated and real water samples. Moreover, the sensor array is very sensitive with the detection limit in the range of 4.2 to 10.5 μM for the target Ni(II) species. Principal component analysis signifies that coordination dominates the response of the sensor array toward different Ni(II) species. The accurate Ni(II) speciation provided by the sensor array is believed to assist the rational design of specific protocols for water decontamination and to shed new light on the development of convenient discrimination methods for other toxic metals of concern.

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Section: Resultsmentioning

confidence: 99%

Engineering Nano-Au-Based Sensor Arrays for Identification of Multiple Ni(II) Complexes in Water Samples

Chen

Pan

et al. 2023

Environ. Sci. Technol.

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“…In plants, copper is involved in the synthesis of iron-containing enzymes and activates plant respiration, photosynthesis, carbohydrate metabolism, and the formation of vitamins P and B [1,2]. Being a vital element, copper actively reacts with amino acids [3,4], carboxylic acids, and nitrogenous bases [5][6][7], forming highly stable complexes.…”

Section: Introductionmentioning

confidence: 99%

Fungicidal and Stimulating Effects of Heteroleptic Copper Complex on the Germination and Phytosafety of Plants

Kabdrakhmanova,

Shaimardan

et al. 2023

J. Compos. Sci.

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At present, when the whole world is intensively switching to organic farming, the refusal or minimization of the usage of chemical plant protection products and synthesized fertilizers is a very urgent issue for the agro-industrial complex (AIC). Accordingly, the solution to the problems of increasing yields and ensuring the fight against pathogenic components should be carried out in accordance with the principles of “green” chemistry. In this regard, the usage of heteroleptic complexes based on carboxylic and amino acids with biogenic metals is dictated not only by their availability, low cost, and ability to increase crop yields but also by fungicidal activity, lower toxicity, and easy biodegradability, which lists them among the “green” and cost-effective plant biostimulants. In the present work, for the first time, a heteroleptic complex based on succinic acid and glycine, with the formula [Cu(succ)(gly)], was developed for usage as a fungicidal biostimulant, which has the ability to significantly reduce the number of pathogens. We found that this compound has a layered structure and was able to increase soybean germination up to 100%.

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Hydroxy‐Carboxylic Acids as Green and Abundant Ligands for Sustainable Recovery of Copper from a Multimetallic Powder: A Proof of Concept

Ostellari,

Tapparelli,

Bragaggia

et al. 2024

ChemSusChem

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The recovery of copper and other valuable metals had become increasingly strategic for the future of the global economy, particularly in regions lacking abundant mineral resources, such as most European countries. In this study, we investigated the viability of utilizing environmentally friendly, cost‐effective, abundant and bio‐based ligands, specifically carboxylic acids and their derivatives, for copper leaching in a low‐temperature hydrometallurgical process. Our investigation focused on elucidating the impact of substituents in the α position of hydroxy‐carboxylic acids on copper solubilization efficacy. Notably, hydroxy‐carboxylic acids, like malic acid and lactic acid, were evidenced as particularly promising ligands for leaching copper from a custom‐made multimetallic powder. By thoroughly characterizing the obtained complexes (Raman, UV‐Vis) and by supporting the experimental efforts by a Design of Experiment (DoE) approach, we optimized the leaching process. The influence of experimental parameters such as pH, temperature, leaching time, and Cu/ligand molar ratio on process yield (determined through Inductively Coupled Plasma – Optical Emission Spectroscopy, ICP‐OES, analysis) was thoroughly investigated. Additionally, we developed a subsequent copper recovery step by precipitating copper (II) hydroxide in an alkaline environment, guided by speciation diagrams tailored for each copper‐ligand system.

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Influence of d-Electron Divalent Metal Ions in Complex Formation with L-Tartaric and L-Malic Acids

Cited by 13 publications

References 50 publications

Engineering Nano-Au-Based Sensor Arrays for Identification of Multiple Ni(II) Complexes in Water Samples

Engineering Nano-Au-Based Sensor Arrays for Identification of Multiple Ni(II) Complexes in Water Samples

Fungicidal and Stimulating Effects of Heteroleptic Copper Complex on the Germination and Phytosafety of Plants

Hydroxy‐Carboxylic Acids as Green and Abundant Ligands for Sustainable Recovery of Copper from a Multimetallic Powder: A Proof of Concept

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