Comparative study on the transition metal complexes of a novel thiacalix[4]arene derivative

Suwattanamala, A.; Appelhans, Dietmar; Wenzel, Marco; Gloe, Kerstin; Magalhães, Alexandre L.; Gomes, J.A.N.F.

doi:10.1016/j.chemphys.2005.07.024

Cited by 9 publications

(6 citation statements)

References 45 publications

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“…Higher charge transfer from ligand to Cu 2+ was presumably due to unfilled d orbitals. [ 35 ] Nevertheless, the higher selectivity for Zn 2+ predicted by DFT simulation was in complete agreement with the experimental observation for the competing ions experiments (Figures 3 and 5).…”

Section: Resultssupporting

confidence: 86%

Design and synthesis of two new terbium and europium complex‐based luminescent probes for the selective detection of zinc ions

et al. 2020

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Zinc plays a key role in many physiological processes and has implications for the environment. Consequently, detection of chelatable zinc ion (Zn2+) has attracted widespread interest from the research community. Lanthanide‐based luminescent probes offer particular advantages, such as high water solubility, long luminescence lifetimes and a large Stokes’ shift, over common organic dye‐based fluorescent sensors. Here, we report the synthesis of terbium and europium complex‐based probes, Tb‐1 and Eu‐1, for sensitive and selective detection of Zn2+ in water. These probes featured the incorporation of bis(2‐pyridylmethyl)]amine (DPA) receptor for Zn2+ chelation and the 1,4,7‐tris(carboxymethyl)‐1,4,7,10‐tetraazacyclododecane (DO3A) ring to chelate lanthanide (Ln3+). Tb‐1 and Eu‐1 displayed high selectivity for Zn2+ ions over a wide range of competing ions, with limits of detection of 0.50 ± 0.1 μM and 1.5 ± 0.01 μM, respectively. Density functional theory simulations were in good agreement with experimental observations, displaying high Zn2+ selectivity compared with most competing ions. In the competing ions experiments, the luminescence response of Tb‐1 and Eu‐1 was moderately quenched by some ions such as Cu2+, this was linked to the comparable binding abilities of these ions for the receptor of the probe.

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Section: Resultssupporting

confidence: 86%

Design and synthesis of two new terbium and europium complex‐based luminescent probes for the selective detection of zinc ions

et al. 2020

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“…Thiacalixarenes have found considerable attention for its potential in further elaboration on both the aromatic rings and on the bridge atoms. 6, 65, 66, 112–115 The synthesis and properties of thiacalix[ n ]pyridine were therefore studied in detail 55–58. Thiacalix[3]pyridine was found adopting a C 3v symmetry when it binds a cation and has interesting catalytic properties,56–58 but little is known about the structure and conformational behavior of these compounds beyond that.…”

Section: Resultsmentioning

confidence: 99%

Semifield testing of a bioremediation tool for atrazine‐contaminated soils: Evaluating the efficacy on soil and aquatic compartments

Chelinho

Moreira‐Santos

Silva

et al. 2012

Enviro Toxic and Chemistry

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The present study evaluated the bioremediation efficacy of a cleanup tool for atrazine-contaminated soils (Pseudomonas sp. ADP plus citrate [P. ADP + CIT]) at a semifield scale, combining chemical and ecotoxicological information. Three experiments representing worst-case scenarios of atrazine contamination for soil, surface water (due to runoff), and groundwater (due to leaching) were performed in laboratory simulators (100 × 40 × 20 cm). For each experiment, three treatments were set up: bioremediated, nonbioremediated, and a control. In the first, the soil was sprayed with 10 times the recommended dose (RD) for corn of Atrazerba and with P. ADP + CIT at day 0 and a similar amount of P. ADP at day 2. The nonbioremediated treatment consisted of soil spraying with 10 times the RD of Atrazerba (day 0). After 7 d of treatment, samples of soil (and eluates), runoff, and leachate were collected for ecotoxicological tests with plants (Avena sativa and Brassica napus) and microalgae (Pseudokirchneriella subcapitata) species. In the nonbioremediated soils, atrazine was very toxic to both plants, with more pronounced effects on plant growth than on seed emergence. The bioremediation tool annulled atrazine toxicity to A. sativa (86 and 100% efficacy, respectively, for seed emergence and plant growth). For B. napus, results point to incomplete bioremediation. For the microalgae, eluate and runoff samples from the nonbioremediated soils were extremely toxic; a slight toxicity was registered for leachates. After only 7 d, the ecotoxicological risk for the aquatic compartments seemed to be diminished with the application of P. ADP + CIT. In aqueous samples obtained from the bioremediated soils, the microalgal growth was similar to the control for runoff samples and slightly lower than control (by 11%) for eluates.

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“…Also, theoretical calculations on the Zn(II) and Cu(II) complexation of parent thiacalix [4]arene and the methyl ester of 1 were done to obtain a deeper insight into the complexation ability of the disubstituted lower rim for the development of suitable supramolecular hosts/receptors with thiacalix [4]arene moieties. 19 In conclusion, we have described the suitability of thiacalix [4]arene derivatives with acid and amino surface groups as dendritic cores for the realization of novel lysine dendrimers up to the 3rd generation. Especially, the cone and 1,3-alternate thiacalix [4]arenes with amino surface groups were found useful as potential building blocks and molecular scaffolds in dendrimer chemistry.…”

Section: Org/njcmentioning

confidence: 92%

Lysine dendrimers based on thiacalix[4]arene core moieties as molecular scaffolds for supramolecular host systems

et al. 2005

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Comparative study on the transition metal complexes of a novel thiacalix[4]arene derivative

Cited by 9 publications

References 45 publications

Design and synthesis of two new terbium and europium complex‐based luminescent probes for the selective detection of zinc ions

Design and synthesis of two new terbium and europium complex‐based luminescent probes for the selective detection of zinc ions

Semifield testing of a bioremediation tool for atrazine‐contaminated soils: Evaluating the efficacy on soil and aquatic compartments

Lysine dendrimers based on thiacalix[4]arene core moieties as molecular scaffolds for supramolecular host systems

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