Cu(<scp>i</scp>) and Ag(<scp>i</scp>) complex formation with the hydrophilic phosphine 1,3,5-triaza-7-phosphadamantane in different ionic media. How to estimate the effect of a complexing medium

Endrizzi, Francesco; Bernardo, Plinio Dí; Zanonato, Pier Luigi; Tisato, Francesco; Porchia, Marina; Isse, Abdirisak Ahmed; Melchior, Andrea; Tolazzi, Marilena

doi:10.1039/c6dt04221j

Cited by 31 publications

(18 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 43 ] After elimination of CuOP, the main peak of CUB‐600‐HCl shifts to higher R space of 1.53 Å, which is very close to 1.55 Å of CuP first shell in the Cu‐PTA coordination complexes with low coordination number. [ 44,45 ] In addition, the main peak of CUB‐600‐HCl shows the same position with CuP first shell of CUB‐800 and pure Cu 3 P. These results indicating that Cu atoms in the CUB‐600‐HCl are fully coordinated with P. EXAFS fitting results further confirm that coordination number of CuP in CUB‐600‐HCl is 3 (Figure S12 and Table S3, Supporting Information). This indicates that, except for CuP 2 coordination (Figure 1b), CuP 3 coordination model should be a dominated one.…”

Section: Figurementioning

confidence: 55%

Carbon‐Microcuboid‐Supported Phosphorus‐Coordinated Single Atomic Copper with Ultrahigh Content and Its Abnormal Modification to Na Storage Behaviors

Kong

et al. 2020

Advanced Energy Materials

View full text Add to dashboard Cite

as N, B, O, S, and P, has been regarded as one of the most effective methods to boost the Na-ion storage in carbons by creating additional active sites and modifying the electronic structure of carbon. [6] Compared with nonmetal doping, doping of single atomic metal (SAM) is expected to exhibit more promising properties. Theoretical studies have shown that SAM dopants in graphene, such as Be-doped graphene, [7] Be,N dual-doped graphene, [8] and Si,Gecodoped graphene, [9] can enhance diffusion kinetics and provide anchoring sites for alkali metal-ions. SAM doping results in more delocalized electrons than nonmetal doping, enhancing electron conductivity. Additionally, SAMs render stronger affinity and lower migration resistance of alkali metal-ions in carbons. [10] Recent reports show that carbon-supported SAMs not only are being intensively investigated in electrocatalysts, [11] but also arouse great interests in Li-metal batteries [12] and Na-S batteries. [13] However, there is still no experimental investigation about the influence of SAMs on the Na-ion storage as well as other alkali metal-ion storage.Novel methods, such as atomic layer loading, chemical vapor deposition, wet chemistry route, and high-energy ball milling strategy, have been developed to prepare SAM-doped carbons, but they suffer from high cost and low yield. [11,14] Compared with these methods, metal-organic frameworks (MOFs)-derived strategy have gained tremendous popularity to construct carbonsupported SAMs. This method generally involves preparation of MOFs and subsequent pyrolysis. During pyrolysis, metal is exceedingly vulnerable to aggregate, [15] so maintaining single atomic state is a major challenge. Many strategies have been adopted to inhibit metal aggregation such as Zn-evaporation, [16][17][18][19][20][21][22] trapping of uncoordinated groups, [23][24][25] etc. Basic ideas for these methods are to increase the distance between metal atoms and/ or strengthen the interaction between metal and anchoring sites to avoid aggregation. Nevertheless, achieving high content doping of SAMs in MOFs-derived carbon is still a great challenge. [26][27][28][29] Low loading-content severely hinders its practical use in current application fields [11][12][13] and also blocks its expansion in other fields such as SIBs. It is urgent to explore novel MOF-derived stategies to realize high-loading SAMs.Achieving high-content loading of SAMs necessitates enhancing metal-ligand interaction. The MOF precursors for Carbon-supported single atomic metals (SAMs) have aroused great interest in energy conversion and storage fields. However, metal content has to date, been far below expectation. Additionally, theoretical calculations show that SAMs are superb anchoring sites for alkali metal-ion storage, but the experimental research remains untouched. Herein, a metal-organophosphine framework derived strategy is proposed to prepare carbon microcuboidssupported single atomic Cu with a high content of 26.3 wt%. Atomic Cu is stabilized mainly by P moieties, exhibit...

show abstract

Section: Figurementioning

confidence: 55%

Carbon‐Microcuboid‐Supported Phosphorus‐Coordinated Single Atomic Copper with Ultrahigh Content and Its Abnormal Modification to Na Storage Behaviors

Kong

et al. 2020

Advanced Energy Materials

View full text Add to dashboard Cite

show abstract

“…[34] Complexes 37, 39 display a high antiproliferative activity for a wide range of solid tumours, also platinum-drug resistant. The combination of DFT calculations and thermodynamic experimental data was used to estimate the stability constants of the complexes supporting that ligand PTA prefers Cu I to the Ag I .…”

Section: Complexes With Pta and Derivatives Different To Dmoptamentioning

confidence: 99%

“…The combination of DFT calculations and thermodynamic experimental data was used to estimate the stability constants of the complexes supporting that ligand PTA prefers Cu I to the Ag I . [34] Eur. Complexes [Cu(PTA) 2 ] + , [Cu(PTA) 3 ] + and [Ag(PTA) 2 ] + are predicted to be the species involved in the cytotoxic mechanism of these compounds.…”

Section: Complexes With Pta and Derivatives Different To Dmoptamentioning

confidence: 99%

New Findings in Metal Complexes with Antiproliferative Activity Containing 1,3,5‐Triaza‐7‐phosphaadamantane (PTA) and Derivative Ligands

et al. 2019

View full text Add to dashboard Cite

This minireview summarizes some of the most significant findings published in the last years on metal complexes containing PTA and PTA derivatives ligands such as dmoPTA, with antiproliferative activity [PTA = 1,3,5-triaza-7-phospha- [a] 1529 Pablo Lorenzo-Luis completes his B.Sc. Degree at La Laguna-University-ULL and he received his Ph.D. from the same University (July 1998) under the supervision of Full Professor P. Gili. Soon after, he moved to ISSECC-CNR-Florence, Italy with Dr. S. Midollini where he worked in the Metal Phosphonate Chemistry. He spent two months (2001) in the same place (now ICCOM-CNR) with Dr. M. Peruzzini conducting basic research on Organometallic Chemistry and Catalysis. He is currently as Lecturer at that University (ULL-Inorganic Chemistry Section from 2004-) and co-author of more than a sixty scientific papers in peer-reviewed journals and he has been supervisor of several Ph.D. students on ruthenium complexes with "Doctor Europaeus Mention". Eur. J. Inorg. Chem. 2019, 1529-1538 www.eurjic.org

show abstract

“…Calorimetry is a powerful tool which allows to directly measure the energy exchange occurring when two reagents are mixed in the measurement cell. This technique has been largely used to obtain thermodynamic data for metal complexation reactions occurring in aqueous or non-aqueous media [20][21][22][23][24][25][26][27][28][29], but much less examples of ITC applied to metal ion adsorption studies are present in the literature [30][31][32][33][34][35][36][37]. In many works, metal ion adsorption enthalpy (ΔHads) has been calculated by van't Hoff equation [38,39].…”

Section: In This Work Spion Functionalized With 3-mercaptopropionic mentioning

confidence: 99%

Thermodynamics of Hg2+ and Ag+ adsorption by 3-mercaptopropionic acid-functionalized superparamagnetic iron oxide nanoparticles

Lanas

Valiente

Tolazzi

et al. 2018

J Therm Anal Calorim

Self Cite

View full text Add to dashboard Cite

Superparamagnetic iron nanoparticles (SPION) have been functionalized with 3mercaptopropionic acid (3-MPA), characterized and applied for the removal of Ag + , Hg 2+ and Pb 2+ metal ions from aqueous solutions by iron oxide (Fe3O4). The heavy metal adsorption has been investigated by means of ICP-OES and isothermal titration calorimetry. Experimental data ware better fitted by Langmuir rather than Freundlich isotherms and the thermodynamic parameters for the adsorption process of the metal ions on the functionalized SPION nanoparticles (SPION@3-MPA) were obtained. Isothermal titration calorimetry (ITC) is applied to monitor heavy metal adsorption on SPION@3-MPA: the process results to be exothermic for Hg 2+ , Ag + while it is weakly endothermic in the case of Pb 2+ and the adsorption enthalpies and entropies have been obtained. The values of the thermodynamic parameters suggest that the Ag + and Hg 2+ ions interact strongly with the thiol groups, while the Pb 2+ ions seem to be adsorbed by the material mostly via electrostatic interaction. When compared to other thiol-functionalized materials, the obtained SPION@3-MPA NP can be considered a competitive adsorbent for Ag + and Hg 2+ ions. The comparison between the ICP-OES adsorption rata and the enthalpy trend obtained by ITC supports shows that the latter technique can be a good tool for a fast testing of materials to be applied for heavy metal separation from solutions.

show abstract

Cu(i) and Ag(i) complex formation with the hydrophilic phosphine 1,3,5-triaza-7-phosphadamantane in different ionic media. How to estimate the effect of a complexing medium

Abstract: The complexes of Cu(I) and Ag(I) with 1,3,5-triaza-7-phosphadamantane (PTA) are currently studied for their potential clinical use as anticancer agents, given the cytotoxicity they exhibited in vitro towards a

Cited by 31 publications

References 60 publications

Carbon‐Microcuboid‐Supported Phosphorus‐Coordinated Single Atomic Copper with Ultrahigh Content and Its Abnormal Modification to Na Storage Behaviors

Carbon‐Microcuboid‐Supported Phosphorus‐Coordinated Single Atomic Copper with Ultrahigh Content and Its Abnormal Modification to Na Storage Behaviors

New Findings in Metal Complexes with Antiproliferative Activity Containing 1,3,5‐Triaza‐7‐phosphaadamantane (PTA) and Derivative Ligands

Thermodynamics of Hg2+ and Ag+ adsorption by 3-mercaptopropionic acid-functionalized superparamagnetic iron oxide nanoparticles

Contact Info

Product

Resources

About