1
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Dimiza F, Barmpa A, Chronakis A, Hatzidimitriou AG, Sanakis Y, Papadopoulos AN, Psomas G. Iron(III) Complexes with Non-Steroidal Anti-Inflammatory Drugs: Structure, Antioxidant and Anticholinergic Activity, and Interaction with Biomolecules. Int J Mol Sci 2023; 24:ijms24076391. [PMID: 37047364 PMCID: PMC10094617 DOI: 10.3390/ijms24076391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/22/2023] [Accepted: 03/24/2023] [Indexed: 03/31/2023] Open
Abstract
One the main research goals of bioinorganic chemists is the synthesis of novel coordination compounds possessing biological potency. Within this context, three novel iron(III) complexes with the non-steroidal anti-inflammatory drugs diflunisal and diclofenac in the presence or absence of the nitrogen donors 1,10-phenanthroline or pyridine were isolated and characterized by diverse techniques. The complexes were evaluated for their ability to scavenge in vitro free radicals such as hydroxyl, 1,1-diphenyl-2-picrylhydrazyl and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radicals, revealing their selective potency towards hydroxyl radicals. The in vitro inhibitory activity of the complexes towards the enzymes acetylcholinesterase and butyrylcholinesterase was evaluated, and their potential to achieve neuroprotection appeared promising. The interaction of the complexes with calf-thymus DNA was examined in vitro, revealing their ability to intercalate in-between DNA nucleobases. The affinity of the complexes for serum albumins was evaluated in vitro and revealed their tight and reversible binding.
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2
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Colla CA, Colliard I, Sawvel AM, Nyman M, Mason HE, Deblonde GJP. Contrasting Trivalent Lanthanide and Actinide Complexation by Polyoxometalates via Solution-State NMR. Inorg Chem 2022; 62:6242-6254. [PMID: 36580490 DOI: 10.1021/acs.inorgchem.2c04014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Deciphering the solution chemistry and speciation of actinides is inherently difficult due to radioactivity, rarity, and cost constraints, especially for transplutonium elements. In this context, the development of new chelating platforms for actinides and associated spectroscopic techniques is particularly important. In this study, we investigate a relatively overlooked class of chelators for actinide binding, namely, polyoxometalates (POMs). We provide the first NMR measurements on americium-POM and curium-POM complexes, using one-dimensional (1D) 31P NMR, variable-temperature NMR, and spin-lattice relaxation time (T1) experiments. The proposed POM-NMR approach allows for the study of trivalent f-elements even when only microgram amounts are available and in phosphate-containing solutions where f-elements are typically insoluble. The solution-state speciation of trivalent americium, curium, plus multiple lanthanide ions (La3+, Nd3+, Sm3+, Eu3+, Yb3+, and Lu3+), in the presence of the model POM ligand PW11O397- was elucidated and revealed the concurrent formation of two stable complexes, [MIII(PW11O39)(H2O)x]4- and [MIII(PW11O39)2]11-. Interconversion reaction constants, reaction enthalpies, and reaction entropies were derived from the NMR data. The NMR results also provide experimental evidence of the weakly paramagnetic nature of the Am3+ and Cm3+ ions in solution. Furthermore, the study reveals a previously unnoticed periodicity break along the f-element series with the reversal of T1 relaxation times of the 1:1 and 1:2 complexes and the preferential formation of the long T1 species for the early lanthanides versus the short T1 species for the late lanthanides, americium, and curium. Given the broad variety of POM ligands that exist, with many of them containing NMR-active nuclei, the combined POM-NMR approach reported here opens a new avenue to investigate difficult-to-study elements such as heavy actinides and other radionuclides.
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Affiliation(s)
- Christopher A Colla
- Atmospheric, Earth and Energy Division, Lawrence Livermore National Laboratory, Livermore, California94550, United States
| | - Ian Colliard
- Glenn T. Seaborg Institute, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California94550, United States.,Department of Chemistry, Oregon State University, Corvallis, Oregon97331, United States
| | - April M Sawvel
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California94550, United States
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, Oregon97331, United States
| | - Harris E Mason
- Atmospheric, Earth and Energy Division, Lawrence Livermore National Laboratory, Livermore, California94550, United States.,Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico87545, United States
| | - Gauthier J-P Deblonde
- Glenn T. Seaborg Institute, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California94550, United States.,Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California94550, United States
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3
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Ong XR, Chen AX, Li N, Yang YY, Luo HK. Nanocellulose: Recent Advances Toward Biomedical Applications. SMALL SCIENCE 2022. [DOI: 10.1002/smsc.202200076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Xuan-Ran Ong
- Agency for Science, Technology and Research Institute of Sustainability for Chemicals, Energy and Environment 1 Pesek Road, Jurong Island Singapore 627833 Singapore
| | - Adrielle Xianwen Chen
- Agency for Science, Technology and Research Institute of Bioengineering and Bioimaging 31 Biopolis Way Singapore 138669 Singapore
| | - Ning Li
- Agency for Science, Technology and Research Institute of Bioengineering and Bioimaging 31 Biopolis Way Singapore 138669 Singapore
| | - Yi Yan Yang
- Agency for Science, Technology and Research Institute of Bioengineering and Bioimaging 31 Biopolis Way Singapore 138669 Singapore
| | - He-Kuan Luo
- Agency for Science, Technology and Research Institute of Sustainability for Chemicals, Energy and Environment 1 Pesek Road, Jurong Island Singapore 627833 Singapore
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4
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Bruder F, Franzke YJ, Weigend F. Paramagnetic NMR Shielding Tensors Based on Scalar Exact Two-Component and Spin-Orbit Perturbation Theory. J Phys Chem A 2022; 126:5050-5069. [PMID: 35857421 DOI: 10.1021/acs.jpca.2c03579] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The temperature-dependent Fermi-contact and pseudocontact terms are important contributions to the paramagnetic NMR shielding tensor. Herein, we augment the scalar-relativistic (local) exact two-component (X2C) framework with spin-orbit perturbation theory including the screened nuclear spin-orbit correction for the EPR hyperfine coupling and g tensor to compute these temperature-dependent terms. The accuracy of this perturbative ansatz is assessed with the self-consistent spin-orbit two-component and four-component treatments serving as reference. This shows that the Fermi-contact and pseudocontact interaction is sufficiently described for paramagnetic NMR shifts; however, larger deviations are found for the EPR spectra and the principle components of the EPR properties of heavy elements. The impact of the perturbative treatment is further compared to that of the density functional approximation and the basis set. Large-scale calculations are routinely possible with the multipole-accelerated resolution of the identity approximation and the seminumerical exchange approximation, as shown for [CeTi6O3(OiPr)9(salicylate)6].
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Affiliation(s)
- Florian Bruder
- Fachbereich Chemie, Philipps-Universität Marburg, 35032 Marburg, Germany
| | - Yannick J Franzke
- Fachbereich Chemie, Philipps-Universität Marburg, 35032 Marburg, Germany
| | - Florian Weigend
- Fachbereich Chemie, Philipps-Universität Marburg, 35032 Marburg, Germany
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5
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Meng F, Liu WD, Li GJ, Deng J, Kong XJ. Synthesis, Structure and Luminescence Characterizations of Pyramid-like Lanthanide-Titanium-Oxo Clusters EuTi9 and TbTi9. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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6
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Liu WD, Li GJ, Xu H, Du MH, Long LS, Zheng LS, Kong XJ. Photoluminescence of Lanthanide-Titanium-Oxo Clusters Eu9Ti2 and Tb9Ti2 Based on a β-Diketone Ligand. Inorg Chem 2022; 61:9849-9854. [PMID: 35731144 DOI: 10.1021/acs.inorgchem.2c01411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of acetylacetone-protected lanthanide-titanium-oxo clusters (LTOCs), formulated as [La6Ti(μ3-OH)8(acac)12(CH3O)2(CH3OH)6] (La6Ti; Hacac = acetylacetone) and [Ln9Ti2(μ4-O)(μ3-OH)14(acac)17(CH3O)2(CH3OH)3] [Ln = Eu (Eu9Ti2) and Tb (Tb9Ti2)], were synthesized through the reactions of LnCl3·6H2O (Ln = La, Eu, and Tb), Hacac, Ti(OiPr)4, and triethylamine in methanol. Crystal structural analysis shows that La6Ti exhibits an hourglass-like structure consisting of two La3Ti cubane subunits by sharing one Ti4+ ion, while Eu9Ti2 can be viewed as a combination of four Eu3Ti cubane subunits by sharing three corners and one side. The photoluminescence (PL) measurements show that Tb9Ti2 exhibits excellent PL properties with a high quantum yield (QY) of 34.8%, while Eu9Ti2 only has a QY of 1.4% because of the different photosensitizations of ligands to Eu3+ and Tb3+ ions in the photophysical process.
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Affiliation(s)
- Wei-Dong Liu
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Guan-Jun Li
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Han Xu
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ming-Hao Du
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - La-Sheng Long
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Lan-Sun Zheng
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xiang-Jian Kong
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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7
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Raauf A, Schläfer J, Gessner I, Lichtenberg A, Zegke M, Fischer T, Mathur S. Homo- and heteroleptic lanthanide-iron alkoxides as precursors in materials synthesis. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Synthesis of lanthanide-doped titanium-oxo clusters for efficient photocurrent responses. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Fang WH, Müller R, Jethwa RB, Riesgo-González V, Li N, Pike SD, Bond AD, Luo HK, Zhang C, Wright DS. Titanium compounds containing naturally occurring dye molecules. Dalton Trans 2021; 50:17202-17207. [PMID: 34783818 DOI: 10.1039/d1dt03377h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A range of titanium compounds containing the naturally occurring dyes quinizarin (QH2) and alizarin (AH2) was synthesized and structurally characterized in the solid state. Among these is the first examples of a discrete metallocyclic arrangement formed exclusively using quinizarin ligands and the first examples of lanthanide containing titanium compounds of the alizarin family of ligands.
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Affiliation(s)
- Wei-Hui Fang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.,Husuf Hamied Department of Chemistry, University of Cambridge, CB2 1EW, UK.
| | - Rosa Müller
- Husuf Hamied Department of Chemistry, University of Cambridge, CB2 1EW, UK.
| | - Rajesh B Jethwa
- Husuf Hamied Department of Chemistry, University of Cambridge, CB2 1EW, UK.
| | | | - Ning Li
- Husuf Hamied Department of Chemistry, University of Cambridge, CB2 1EW, UK. .,Institute of Bioengineering and Bioimaging, 31 Biopolis Way, The Nanos, #07-01, Singapore 138669
| | - Sebastian D Pike
- Husuf Hamied Department of Chemistry, University of Cambridge, CB2 1EW, UK.
| | - Andrew D Bond
- Husuf Hamied Department of Chemistry, University of Cambridge, CB2 1EW, UK.
| | - He-Kuan Luo
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 2 Fusionopolis Way, #08-03, Innovis, Singapore 138634
| | - Cheng Zhang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Dominic S Wright
- Husuf Hamied Department of Chemistry, University of Cambridge, CB2 1EW, UK.
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10
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Svensson F, Cojocaru B, Qiu Z, Parvulescu V, Edvinsson T, Seisenbaeva GA, Tiseanu C, Kessler VG. Rare-Earth-Modified Titania Nanoparticles: Molecular Insight into Synthesis and Photochemical Properties. Inorg Chem 2021; 60:14820-14830. [PMID: 34515470 PMCID: PMC8493554 DOI: 10.1021/acs.inorgchem.1c02134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Indexed: 11/28/2022]
Abstract
A molecular precursor approach to titania (anatase) nanopowders modified with different amounts of rare-earth elements (REEs: Eu, Sm, and Y) was developed using the interaction of REE nitrates with titanium alkoxides by a two-step solvothermal-combustion method. The nature of an emerging intermetallic intermediate was revealed unexpectedly for the applied conditions via a single-crystal study of the isolated bimetallic isopropoxide nitrate complex [Ti2Y(iPrO)9(NO3)2], a nonoxo-substituted compound. Powders of the final reaction products were characterized by powder X-ray diffraction, scanning electron microscopy-energy-dispersive spectroscopy, Fourier transform infrared, X-ray photoelectron spectroscopy, Raman spectroscopy, and photoluminescence (PL). The addition of REEs stabilized the anatase phase up to ca. 700 °C before phase transformation into rutile became evident. The photocatalytic activity of titania modified with Eu3+ and Sm3+ was compared with that of Degussa P25 titania as the control. PL studies indicated the incorporation of Eu and Sm cations into titania (anatase) at lower annealing temperatures (500 °C), but an exclusion to the surface occurred when the annealing temperature was increased to 700 °C. The efficiency of the modified titania was inferior to the control titania while illuminated within narrow wavelength intervals (445-465 and 510-530 nm), but when subjected to a wide range of visible radiation, the Eu3+- and Sm3+-modified titania outperformed the control, which was attributed both to doping of the band structure of TiO2 with additional energy levels and to the surface chemistry of the REE-modified titania.
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Affiliation(s)
- Fredric
G. Svensson
- Department
of Molecular Sciences, Swedish University
of Agricultural Sciences, Box 7015, Uppsala SE-75007, Sweden
| | - Bogdan Cojocaru
- Department
of Chemistry, University of Bucharest, B-dul Regina Elisabeta, No. 4−12, Bucharest RO-030018, Romania
| | - Zhen Qiu
- Department
of Materials Science and Engineering, Uppsala
University, Box 53, Uppsala SE-75103, Sweden
| | - Vasile Parvulescu
- Department
of Chemistry, University of Bucharest, B-dul Regina Elisabeta, No. 4−12, Bucharest RO-030018, Romania
| | - Tomas Edvinsson
- Department
of Materials Science and Engineering, Uppsala
University, Box 53, Uppsala SE-75103, Sweden
| | - Gulaim A. Seisenbaeva
- Department
of Molecular Sciences, Swedish University
of Agricultural Sciences, Box 7015, Uppsala SE-75007, Sweden
| | - Carmen Tiseanu
- National
Institute for Laser, Plasma and Radiation Physics (NILPR), Bucharest-Magurele RO-76900, Romania
| | - Vadim G. Kessler
- Department
of Molecular Sciences, Swedish University
of Agricultural Sciences, Box 7015, Uppsala SE-75007, Sweden
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11
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Fang WH, Li H, Lv YK, Wright DS. A cocrystallization of polyoxotitanium cages with lanthanide clusters. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2020.121852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Petrus R, Chomiak K, Utko J, Bieńko A, Lis T, Sobota P. Heterometallic Group 4-Lanthanide Oxo-alkoxide Precursors for Synthesis of Binary Oxide Nanomaterials. Inorg Chem 2020; 59:16545-16556. [PMID: 33147011 DOI: 10.1021/acs.inorgchem.0c02478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study, an efficient procedure for the synthesis of uncommon group 4-lanthanide oxo-alkoxide derivatives was developed. Heterometallic clusters with the structures [La2Ti4(μ4-O)2(μ3-OEt)2(μ-OEt)8(OEt)6(Cl)2(HOEt)2] (1), [La2Zr2(μ3-O)(μ-OEt)5(μ-Cl)(OEt)2(HOEt)4(Cl)4]n (2), [La2Hf2(μ3-O)(μ-OEt)5(μ-Cl)(OEt)2(HOEt)4(Cl)4]n (3), [Nd2Ti4(μ4-O)2(μ3-OEt)2(μ-OEt)8(OEt)6(HOEt)2(Cl)2] (4), [Nd4Zr4(μ3-O)2(μ-OEt)10(μ-Cl)4(OEt)8(HOEt)10(Cl)2] (5), and [Nd4Hf4(μ3-O)2(μ-OEt)10(μ-Cl)4(OEt)8(HOEt)10(Cl)2] (6) were synthesized via the reaction of a metallocene dichloride, Cp2M'Cl2 (where M' = Ti, Zr, and Hf), and metallic lanthanum or neodymium in the presence of excess ethanol. This procedure gave crystalline precursors with molecular stoichiometries suitable for obtaining group 4-lanthanide oxide materials. Compounds 1-6 were examined by analytical and spectroscopic techniques and single-crystal X-ray diffraction. The magnetic properties of 5 and 6 were investigated by using direct and alternating current (dc and ac) susceptibility measurements. The results indicated weak antiferromagnetic interactions between NdIII ions and a field-supported slow magnetic relaxation. Lanthanum-titanium compound 1 decomposed at 950 °C to give the perovskite compound La0.66TiO3 and small amounts of rutile TiO2. Under the same conditions, 4 decomposed to give a mixture of Nd4Ti9O24 and Nd0.66TiO3. When 4 was calcined at 1300 °C, decomposition of Nd4Ti9O24 to Nd0.66TiO3 and TiO2 was observed. Calcination of 2, 3, 5, and 6 at 950-1500 °C led to the selective formation of heterometallic La2Zr2O7, La2Hf2O7, Nd2Zr2O7, and Nd2Hf2O7 phases, respectively.
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Affiliation(s)
- Rafał Petrus
- Faculty of Chemistry, Wrocław University of Science and Technology, 23 Smoluchowskiego, 50-370 Wrocław, Poland
| | - Katarzyna Chomiak
- Łukasiewicz Research Network - PORT Polish Center For Technology Development, 147 Stablowicka, 54-066 Wrocław, Poland
| | - Józef Utko
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Alina Bieńko
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Tadeusz Lis
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Piotr Sobota
- Łukasiewicz Research Network - PORT Polish Center For Technology Development, 147 Stablowicka, 54-066 Wrocław, Poland
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13
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Hou S, Li Q, Ding QR, Kang Y, Zhang J, Zhang L. Heterometallic Ag 2Ti 10 and Ag 4Ti 8-oxo clusters with different silver doping models: synthesis, structure, and theoretical studies. Dalton Trans 2020; 49:11005-11009. [PMID: 32729609 DOI: 10.1039/d0dt02396e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two heterometal-oxo Ag2Ti10 (PTC-221) and Ag4Ti8 (PTC-222) clusters were successfully synthesized and characterized, with the doped Ag atoms surrounded by the Ti-O core and exposed to the cluster surface, respectively. Density functional theory (DFT) calculations were carried out to study the electronic structures of PTC-221 and PTC-222, including the frontier orbitals and partial density of states (PDOS). The solid-state UV-vis absorption spectra of PTC-221 and PTC-222 were also recorded. Interestingly, PTC-221 shows intense visible light absorption with an absorption edge around 590 nm and exhibits good photocurrent response in the visible region.
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Affiliation(s)
- Simin Hou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, the Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China. and College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, P. R. China
| | - Qiaohong Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, the Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
| | - Qing-Rong Ding
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, the Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
| | - Yao Kang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, the Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
| | - Jian Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, the Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
| | - Lei Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, the Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
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14
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De S, Gottlieb HE, Hoz S. Quantification of the Interaction of SmI 2 with Substrates and Ligands. Chemistry 2020; 26:6846-6850. [PMID: 32045042 DOI: 10.1002/chem.201905233] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/10/2020] [Indexed: 12/31/2022]
Abstract
The method developed and introduced here enables for the first time (to the authors' knowledge), a quantitative assessment of the interaction of SmI2 with substrates prior to the electron transfer stage. As a proof of concept, equilibrium constants for some model substrates including carbonyl compounds and aromatic nuclei are reported here. In addition, the first equilibrium constants with some common ligands were also determined. The equilibrium constants range from approximately 0.07 m-1 for diisopropyl ketone to 2500 m-1 for hexamethylphosphoramide (HMPA). It is shown that the data acquired by this method, which is based on the concept of shift reagents, can shed light on the most intimate details of the reaction mechanism, and this method is a useful tool for planning a synthetic process.
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Affiliation(s)
- Suranjan De
- Department of Chemistry, Bar-Ilan University, Ramat Gan, 5290002, Israel
| | - Hugo E Gottlieb
- Department of Chemistry, Bar-Ilan University, Ramat Gan, 5290002, Israel
| | - Shmaryahu Hoz
- Department of Chemistry, Bar-Ilan University, Ramat Gan, 5290002, Israel
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15
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Li N, Pranantyo D, Kang ET, Wright DS, Luo HK. A Simple Drop-and-Dry Approach to Grass-Like Multifunctional Nanocoating on Flexible Cotton Fabrics Using In Situ-Generated Coating Solution Comprising Titanium-Oxo Clusters and Silver Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2020; 12:12093-12100. [PMID: 32057229 DOI: 10.1021/acsami.9b22768] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Multifunctional nanocoatings have been of central importance in various technological fields, yet their fabrication, especially on flexible substrates, still remains a persistent challenge to date. We herein demonstrate a mild single-step drop-and-dry approach to the in situ growth of hierarchical grass-like nanostructures on flexible cotton fabrics. A precursor solution comprising titanium-oxo clusters [Ti18MnO30(OEt)20(MnPhen)3] (Phen = 1,10-phenanthroline) and AgNO3 is employed wherein Ag+ cations are in situ-reduced to silver nanoparticles (AgNPs). Drop-casting onto cotton fabrics under mild conditions induces the in situ growth of the heterogeneous grass-like assembly, and each constituent nanofibrous 'grass leaf' incorporates AgNPs both on the surface and embedded in the interior. The hierarchical morphology and heterogeneous composition of these grass-like nanostructures impart the coated cotton fabrics with enhanced antibacterial properties, robust hydrophobicity, and UV-blocking capability, which are features desired in textile materials but lacking in natural cotton.
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Affiliation(s)
- Ning Li
- Agency for Science, Technology and Research, Institute of Materials Research and Engineering, 2 Fusionopolis Way, #08-03, Innovis, 138634, Singapore
- Chemistry Department, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Dicky Pranantyo
- Department of Chemical & Biomolecular Engineering, National University of Singapore, Kent Ridge, 119260, Singapore
| | - En-Tang Kang
- Department of Chemical & Biomolecular Engineering, National University of Singapore, Kent Ridge, 119260, Singapore
| | - Dominic S Wright
- Chemistry Department, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - He-Kuan Luo
- Agency for Science, Technology and Research, Institute of Materials Research and Engineering, 2 Fusionopolis Way, #08-03, Innovis, 138634, Singapore
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16
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17
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Liu XX, Fang WH, Chen S, Zhang L, Zhang J. Wheel-Shape Heterometallic Ti10
M2
-oxo Clusters (M = Ni, Co) with Effective Visible Light Absorption. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201800541] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Xiao-Xue Liu
- College of Chemistry; Fuzhou University; Fuzhou Fujian 350116 China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou Fujian 350002 China
| | - Wei-Hui Fang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou Fujian 350002 China
| | - Shumei Chen
- College of Chemistry; Fuzhou University; Fuzhou Fujian 350116 China
| | - Lei Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou Fujian 350002 China
| | - Jian Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou Fujian 350002 China
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18
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Fang WH, Zhang L, Zhang J. Synthetic strategies, diverse structures and tuneable properties of polyoxo-titanium clusters. Chem Soc Rev 2018; 47:404-421. [DOI: 10.1039/c7cs00511c] [Citation(s) in RCA: 215] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A review of polyoxo-titanium clusters (PTCs), with an emphasis on synthetic methodologies, diverse structures, tuneable optical properties and potential applications.
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Affiliation(s)
- Wei-Hui Fang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Lei Zhang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Jian Zhang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
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19
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Li N, Subramanian GS, Matthews PD, Xiao J, Chellappan V, Rosser TE, Reisner E, Luo HK, Wright DS. Energy transfer and photoluminescence properties of lanthanide-containing polyoxotitanate cages coordinated by salicylate ligands. Dalton Trans 2018; 47:5679-5686. [DOI: 10.1039/c8dt00825f] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The salicylate to Ti4+ charge-transfer process and energy transfer mechanisms in a series of polyoxotitanium cages are investigated, to account for their photoluminescence properties.
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Affiliation(s)
- Ning Li
- Department of Chemistry
- University of Cambridge
- UK
- Institute of Materials Research and Engineering
- Agency for Science
| | | | - Peter D. Matthews
- Department of Chemistry
- University of Cambridge
- UK
- School of Chemical and Physical Sciences
- Lennard-Jones Building
| | - James Xiao
- Cavendish Laboratory
- University of Cambridge
- UK
| | - Vijila Chellappan
- Institute of Materials Research and Engineering
- Agency for Science
- Technology and Research
- Singapore
| | | | | | - He-Kuan Luo
- Institute of Materials Research and Engineering
- Agency for Science
- Technology and Research
- Singapore
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20
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Suturina EA, Mason K, Geraldes CFGC, Kuprov I, Parker D. Beyond Bleaney's Theory: Experimental and Theoretical Analysis of Periodic Trends in Lanthanide-Induced Chemical Shift. Angew Chem Int Ed Engl 2017; 56:12215-12218. [DOI: 10.1002/anie.201706931] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 07/31/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Elizaveta A. Suturina
- School of Chemistry; University of Southampton; Highfield Campus Southampton SO17 1BJ UK
| | - Kevin Mason
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
| | - Carlos F. G. C. Geraldes
- Department of Life Sciences and Coimbra Chemistry Centre; Faculty of Science and Technology; University of Coimbra; 3000-456 Coimbra Portugal
| | - Ilya Kuprov
- School of Chemistry; University of Southampton; Highfield Campus Southampton SO17 1BJ UK
| | - David Parker
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
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21
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Suturina EA, Mason K, Geraldes CFGC, Kuprov I, Parker D. Beyond Bleaney's Theory: Experimental and Theoretical Analysis of Periodic Trends in Lanthanide-Induced Chemical Shift. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706931] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Elizaveta A. Suturina
- School of Chemistry; University of Southampton; Highfield Campus Southampton SO17 1BJ UK
| | - Kevin Mason
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
| | - Carlos F. G. C. Geraldes
- Department of Life Sciences and Coimbra Chemistry Centre; Faculty of Science and Technology; University of Coimbra; 3000-456 Coimbra Portugal
| | - Ilya Kuprov
- School of Chemistry; University of Southampton; Highfield Campus Southampton SO17 1BJ UK
| | - David Parker
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
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