RETRACTED ARTICLE: Two novel nanostructured La(III) coordination polymers were synthesized by sonochemical: crystal structures along with anticancer activity on human nasopharyngeal carcinoma cells

Cui, Zhongtao; Liu, Hong; Yuan, Yao-Wei; Wang, Xiaohui; Tang, Jianming; Chu, Po-Yi; Zhang, Ye

doi:10.1007/s13738-020-01926-x

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…To overcome this deficiency, we have designed and synthesized two extended trigonal tritopic linkers, H 3 BTBTB (L1), which is presented for the first time in the literature, and H 3 BTCTB (L2), which has been reported before but not used for the assembly of an etb -MOF. − Both are functionalized with three amide groups (−NH–CO−). This polar functional group is reported to interact strongly with CH 4 molecules and strongly dependent on the structural configuration of each material. − Solvothermal synthesis with Al 3+ gave rise to two new porous etb -MOFs consisting of 1D hexagonal channels with diameters of 25 and 17 Å, respectively.…”

Section: Introductionmentioning

confidence: 99%

Water-Stable etb-MOFs for Methane and Carbon Dioxide Storage

et al. 2023

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We utilized the etb platform of MOFs for the synthesis of two new water-stable compounds based on amide functionalized trigonal tritopic organic linkers H3BTBTB (L1), H3BTCTB (L2) and Al3+ metal ions, namely, Al(L1) and Al(L2). The mesoporous Al(L1) material exhibits an impressive methane (CH4) uptake at high pressures and ambient temperature. The corresponding values of 192 cm3 (STP) cm–3, 0.254 g g–1 at 100 bar, and 298 K are among the highest reported for mesoporous MOFs, while the gravimetric and volumetric working capacities (between 80 bar and 5 bar) can be well compared to the best MOFs for CH4 storage. Furthermore, at 298 K and 50 bar, Al(L1) adsorbs 50 wt % (304 cm3 (STP) cm–3) CO2, values among the best recorded for CO2 storage using porous materials. To gain insight into the mechanism accounting for the resultant enhanced CH4 storage capacity, theoretical calculations were performed, revealing the presence of strong CH4 adsorption sites near the amide groups. Our work demonstrates that amide functionalized mesoporous etb-MOFs can be valuable for the design of versatile coordination compounds with CH4 and CO2 storage capacities comparable to ultra-high surface area microporous MOFs.

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Section: Introductionmentioning

confidence: 99%

Water-Stable etb-MOFs for Methane and Carbon Dioxide Storage

et al. 2023

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Retraction Note to: Crystal Structures and Anti-Gastric Cancer Activities of Two Cd(II)-Based Coordination Polymers Constructed from Different Donor Ligands

Zheng

Yang

2023

J Struct Chem

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Unconventional Dual Donor-Acceptor Topologies of Aromatic Rings in Amine-Based Polymeric Tetrahedral Zn(II) Compounds Involving Unusual Non-Covalent Contacts: Antiproliferative Evaluation and Theoretical Studies

et al. 2023

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Two Zn(II) coordination polymers, viz., [Zn2Cl2(H2O)2(µ-4-AmBz)2]n (1) and [ZnCl2(µ-3-AmPy)2]n (2) (4-AmBz = 4-aminobenzoate, 3-AmPy = 3-aminopyridine) have been prepared at room temperature and characterized using elemental analysis, FT-IR, electronic spectroscopy, TGA (thermogravimetric analysis) and single crystal XRD. Crystal structure analyses of the polymers unfold the presence of non-covalent anion–π, π-stacking and unusual NH2(amino)⋯π interactions which provide rigidity to the crystal structures. Unconventional Type I Cl⋯Cl interactions also play a pivotal role in the stability of compound 1. Molecular electrostatic potential (MEP) surface analysis reveals that the MEP values over the center of the aromatic rings of coordinated 4-AmBz and 3-AmPy moieties are positive on one side and negative on the other side which confirms the dual non-covalent donor-acceptor topologies of the aromatic rings and explains the concurrent formation of unusual non-covalent NH2···π and anion–π interactions. DFT (density functional theory) calculations, QTAIM (quantum theory of atoms in molecules) and NCI plot (non-covalent index) index analyses reveal that among various non-covalent contacts involved in the crystal packing of the compounds, H-bonds in compound 1 and π-interactions (NH2···π, π-π, anion–π) in compound 2 are energetically significant. We have explored in vitro cytotoxic potential of the compounds in Dalton’s lymphoma (DL) cancer cells using trypan blue and apoptosis assays. The studies show that compounds 1 and 2 can significantly exhibit cytotoxicity in DL cells with minimum cytotoxicity in healthy PBMC cells. Molecular docking studies reveal that the compounds effectively bind with the antiapoptotic target proteins; thereby establishing a structure activity relationship of the compounds.

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RETRACTED ARTICLE: Two novel nanostructured La(III) coordination polymers were synthesized by sonochemical: crystal structures along with anticancer activity on human nasopharyngeal carcinoma cells

Cited by 3 publications

References 17 publications

Water-Stable etb-MOFs for Methane and Carbon Dioxide Storage

Water-Stable etb-MOFs for Methane and Carbon Dioxide Storage

Retraction Note to: Crystal Structures and Anti-Gastric Cancer Activities of Two Cd(II)-Based Coordination Polymers Constructed from Different Donor Ligands

Unconventional Dual Donor-Acceptor Topologies of Aromatic Rings in Amine-Based Polymeric Tetrahedral Zn(II) Compounds Involving Unusual Non-Covalent Contacts: Antiproliferative Evaluation and Theoretical Studies

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