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Gallo E, Bellucci L, Carlotto S, Bottaro G, Babetto L, Giordano L, Marchetti F, Samaritani S, Armelao L, Labella L. Aluminium 8-Hydroxyquinolinate N-Oxide as a Precursor to Heterometallic Aluminium-Lanthanide Complexes. Molecules 2024; 29:451. [PMID: 38257364 PMCID: PMC10821320 DOI: 10.3390/molecules29020451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/24/2024] Open
Abstract
A reaction in anhydrous toluene between the formally unsaturated fragment [Ln(hfac)3] (Ln3+ = Eu3+, Gd3+ and Er3+; Hhfac = hexafluoroacetylacetone) and [Al(qNO)3] (HqNO = 8-hydroxyquinoline N-oxide), here prepared for the first time from [Al(OtBu)3] and HqNO, affords the dinuclear heterometallic compounds [Ln(hfac)3Al(qNO)3] (Ln3+ = Eu3+, Gd3+ and Er3+) in high yields. The molecular structures of these new compounds revealed a dinuclear species with three phenolic oxygen atoms bridging the two metal atoms. While the europium and gadolinium complexes show the coordination number (CN) 9 for the lanthanide centre, in the complex featuring the smaller erbium ion, only two oxygens bridge the two metal atoms for a resulting CN of 8. The reaction of [Eu(hfac)3] with [Alq3] (Hq = 8-hydroxyquinoline) in the same conditions yields a heterometallic product of composition [Eu(hfac)3Alq3]. A recrystallization attempt from hot heptane in air produced single crystals of two different morphologies and compositions: [Eu2(hfac)6Al2q4(OH)2] and [Eu2(hfac)6(µ-Hq)2]. The latter compound can be directly prepared from [Eu(hfac)3] and Hq at room temperature. Quantum mechanical calculations confirm (i) the higher stability of [Eu(hfac)3Al(qNO)3] vs. the corresponding [Eu(hfac)3Alq3] and (ii) the preference of the Er complexes for the CN 8, justifying the different behaviour in terms of the Lewis acidity of the metal centre.
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Affiliation(s)
- Elisa Gallo
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy (L.G.)
| | - Luca Bellucci
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy (L.G.)
- ICMATE-CNR and INSTM, Presso Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy; (S.C.)
| | - Silvia Carlotto
- ICMATE-CNR and INSTM, Presso Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy; (S.C.)
- Dipartimento di Scienze Chimiche and INSTM, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Gregorio Bottaro
- ICMATE-CNR and INSTM, Presso Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy; (S.C.)
| | - Luca Babetto
- Dipartimento di Scienze Chimiche and INSTM, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Luca Giordano
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy (L.G.)
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy (L.G.)
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy (L.G.)
| | - Lidia Armelao
- Dipartimento di Scienze Chimiche and INSTM, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
- Dipartimento di Scienze Chimiche e Tecnologie dei Materiali (DSCTM), Consiglio Nazionale Delle Ricerche, Piazzale A. Moro 7, I-00185 Roma, Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy (L.G.)
- ICMATE-CNR and INSTM, Presso Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy; (S.C.)
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2
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Ashoor SET, Abokhater RA, Belkhiri L, Gadir SA. Spectroscopy and DFT Studies on Cr(III) Complexes with Saccharides, 8-Hydroxyquinoline and Their Biological Activity. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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3
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Douglas SP, Faria EN, Mrig S, Zhou Y, Santoni L, Clancy AJ, Knapp CE. Tris(β-ketoiminate) Aluminium(III) Compounds as Aluminium Oxide Precursors. Chempluschem 2023; 88:e202200411. [PMID: 36646521 DOI: 10.1002/cplu.202200411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/22/2022] [Indexed: 12/24/2022]
Abstract
Precursor design is the crucial step in tailoring the deposition profile towards a multitude of functional materials. Most commercially available aluminium oxide precursors require high processing temperatures (>500 °C). Herein, we report the tuning of the decomposition profile (200-350 °C) of a range of octahedrally coordinated tris(β-ketoiminate) aluminium complexes of the type [Al(MeCN(R)CHC=OMe)3 ], by varying the R substituents in the ligands. The complexes are derived from the reaction of trimethylamine alane (TMAA) and a series of N-substituted β-ketoiminate ligands (R-acnacH, R=Me, Et, i Pr, Ph) with varying R-substituents sizes. When the more sterically encumbered ligand (R=Mes) was used, the Al atom became five-coordinate, therefore representing the threshold to octahedral coordination around the metal in these type of compounds, which, consequently, lead to a change of decomposition profile. The resulting compounds have been characterised by NMR spectroscopy, mass spectrometry, elemental analysis and single crystal X-ray diffraction. [Al(MeCN(Me)CHC=OMe)3 ] has been used as a single source precursor for the deposition of Al2 O3 . Thin films were deposited via aerosol assisted chemical vapour deposition (AACVD), with toluene as the solvent, and were analysed using SEM, EDX and XPS.
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Affiliation(s)
- Samuel P Douglas
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
| | - Erica N Faria
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
| | - Shreya Mrig
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
| | - Ye Zhou
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
| | - Leonardo Santoni
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
| | - Adam J Clancy
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
| | - Caroline E Knapp
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
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4
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Ramos ML, Justino LLG, Barata R, Costa T, Burrows HD. Complexes of In(III) with 8-hydroxyquinoline-5-sulfonate in solution: structural studies and the effect of cationic surfactants on the photophysical behaviour. Dalton Trans 2021; 50:16970-16983. [PMID: 34752595 DOI: 10.1039/d1dt02858h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Following previous studies on the complexation in aqueous solutions of 8-hydroxyquinoline-5-sulfonate (8-HQS) with the trivalent metal ions, Al(III) and Ga(III) and various other metal ions, using multinuclear NMR, DFT calculations, UV-vis absorption and luminescence techniques, we have extended our studies on 8-HQS complexation to the trivalent metal ion In(III). The study combines the high sensitivity of luminescence techniques and the selectivity of multinuclear NMR spectroscopy with the structural details accessible through DFT calculations, and aims to obtain a complete understanding of the complexation between the In3+ metal ion and 8-HQS, and how this influences the luminescence behaviour. A full speciation study has been performed and, as has been reported for the complexes of 8-hydroxyquinoline (8-HQ), the dominant complexes of 8-HQS with In(III) show marked differences in the complexation behaviour when compared with the equivalent complexes with the other group 13 cations Al(III) and Ga(III). While all three complexes have a 1 : 3 (metal : ligand) stoichiometry, those with Al(III) and Ga(III) show a mer-geometry of the ligands around the metal centre, whereas the fac-geometry is observed for the complexes with In(III). On binding to metal ions, 8-HQS shows a marked increase in the intensity of the fluorescence emission band compared to that of the virtually non-luminescent free ligand. However, the increase for In(III) is less pronounced than with Al(III) or Ga(III). These observations have important implications for the application of the complexes in sensing, light emitting devices (e.g. OLEDs), or as electron transport layers in photovoltaics for solar energy conversion. Furthermore, surfactant complexation is known to improve the fluorescence intensity in metal complexes with 8-HQS, by inhibiting the ligand exchange, as we have reported for complexes of HQS with Al(III) and Ga(III). Accordingly, in view of the development of applications in either sensing or optoelectronics, our interest also includes the study of HQS complexes of In(III) in the presence of cationic surfactants, in comparison with previous results with Al(III) and Ga(III).
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Affiliation(s)
- M Luísa Ramos
- Chemistry Department and Coimbra Chemistry Centre, University of Coimbra, 3004-535 Coimbra, Portugal.
| | - Licínia L G Justino
- Chemistry Department and Coimbra Chemistry Centre, University of Coimbra, 3004-535 Coimbra, Portugal.
| | - Rui Barata
- Chemistry Department and Coimbra Chemistry Centre, University of Coimbra, 3004-535 Coimbra, Portugal.
| | - Telma Costa
- Chemistry Department and Coimbra Chemistry Centre, University of Coimbra, 3004-535 Coimbra, Portugal.
| | - Hugh D Burrows
- Chemistry Department and Coimbra Chemistry Centre, University of Coimbra, 3004-535 Coimbra, Portugal.
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5
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Thomas R, Thomas SP, Lakhotiya H, Mamakhel AH, Bondesgaard M, Birkedal V, Iversen BB. Tuning of bandgaps and emission properties of light-emitting diode materials through homogeneous alloying in molecular crystals. Chem Sci 2021; 12:12391-12399. [PMID: 34603669 PMCID: PMC8480314 DOI: 10.1039/d1sc03714e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 08/14/2021] [Indexed: 11/21/2022] Open
Abstract
Alloy formation is ubiquitous in inorganic materials science, and it strongly depends on the similarity between the alloyed atoms. Since molecules have widely different shapes, sizes and bonding properties, it is highly challenging to make alloyed molecular crystals. Here we report the generation of homogenous molecular alloys of organic light emitting diode materials that leads to tuning in their bandgaps and fluorescence emission. Tris(8-hydroxyquinolinato)aluminium (Alq3) and its Ga, In and Cr analogues (Gaq3, Inq3, and Crq3) form homogeneous mixed crystal phases thereby resulting in binary, ternary and even quaternary molecular alloys. The MxM′(1−x)q3 alloy crystals are investigated using X-ray diffraction, energy dispersive X-ray spectroscopy and Raman spectroscopy on single crystal samples, and photoluminescence properties are measured on the exact same single crystal specimens. The different series of alloys exhibit distinct trends in their optical bandgaps compared with their parent crystals. In the AlxGa(1−x)q3 alloys the emission wavelengths lie in between those of the parent crystals, while the AlxIn(1−x)q3 and GaxIn(1−x)q3 alloys have red shifts. Intriguingly, efficient fluorescence quenching is observed for the MxCr(1−x)q3 alloys (M = Al, Ga) revealing the effect of paramagnetic molecular doping, and corroborating the molecular scale phase homogeneity. Multicomponent molecular alloy crystals exhibit intriguing effects of tuning and quenching in their photoluminescence, suggesting ‘alloy-crystal engineering’ as a useful design strategy for molecular functional materials.![]()
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Affiliation(s)
- Reshmi Thomas
- Center for Materials Crystallography, Department of Chemistry and iNano, Aarhus University Langelandsgade 140 Aarhus 8000 Denmark
| | - Sajesh P Thomas
- Center for Materials Crystallography, Department of Chemistry and iNano, Aarhus University Langelandsgade 140 Aarhus 8000 Denmark
| | - Harish Lakhotiya
- Center for Materials Crystallography, Department of Chemistry and iNano, Aarhus University Langelandsgade 140 Aarhus 8000 Denmark
| | - Aref H Mamakhel
- Center for Materials Crystallography, Department of Chemistry and iNano, Aarhus University Langelandsgade 140 Aarhus 8000 Denmark
| | - Martin Bondesgaard
- Center for Materials Crystallography, Department of Chemistry and iNano, Aarhus University Langelandsgade 140 Aarhus 8000 Denmark
| | - Victoria Birkedal
- Interdisciplinary Nanoscience Centre (iNano) and Department of Chemistry, Aarhus University Langelandsgade 140 Aarhus 8000 Denmark
| | - Bo B Iversen
- Center for Materials Crystallography, Department of Chemistry and iNano, Aarhus University Langelandsgade 140 Aarhus 8000 Denmark
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6
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Alexander OT, Duvenhage MM, Kroon RE, Brink A, Visser HG. Comparison of a dimeric and a monomeric indium-quinolinato complex: synthesis, structure and photoluminescence. NEW J CHEM 2021. [DOI: 10.1039/d0nj03865b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Two indium(iii) complexes, mer-[In(Ox)3]·2H2O (1) and [In2(Ox)2Cl2-μ-[κ2-O,O′-(Ox)2]]·C7H8 (2) (Ox = 8-hydroxyquinolinate), were synthesized and characterised for comparison by NMR, X-ray diffraction and photoluminescence.
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Affiliation(s)
- Orbett T. Alexander
- Department of Chemistry
- University of the Free State
- Bloemfontein 9300
- South Africa
| | - Mart M. Duvenhage
- Department of Physics
- University of the Free State
- Bloemfontein 9300
- South Africa
| | - Robin E. Kroon
- Department of Physics
- University of the Free State
- Bloemfontein 9300
- South Africa
| | - Alice Brink
- Department of Chemistry
- University of the Free State
- Bloemfontein 9300
- South Africa
| | - Hendrik G. Visser
- Department of Chemistry
- University of the Free State
- Bloemfontein 9300
- South Africa
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7
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Jäschke A, Stumpf T, Aliabadi A, Büchner B, Kataev V, Hahn T, Kortus J, Kersting B. Tetranuclear Lanthanide Complexes Supported by Hydroxyquinoline‐Calix[4]arene‐Ligands: Synthesis, Structure, and Magnetic Properties of [Ln
4
(H
3
L)
2
(µ‐OH)
2
(NO
3
)
4
] (Ln = Tb, Dy, Yb) and [Dy
2
(H
4
L)
2
(NO
3
)](NO
3
). Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Astrid Jäschke
- Institut für Anorganische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Germany
- Institut für Ressourcenökologie Helmholtz‐Zentrum Dresden‐Rossendorf Bautzner Landstraße 400 01328 Dresden Germany
| | - Thorsten Stumpf
- Institut für Ressourcenökologie Helmholtz‐Zentrum Dresden‐Rossendorf Bautzner Landstraße 400 01328 Dresden Germany
| | - Azar Aliabadi
- Leibniz IFW Dresden Helmholtzstr. 20 01069 Dresden Germany
| | - Bernd Büchner
- Leibniz IFW Dresden Helmholtzstr. 20 01069 Dresden Germany
| | | | - Torsten Hahn
- Institut für Theoretische Physik TU Bergakademie Freiberg Leipziger Str. 23 09599 Freiberg/Sa Germany
| | - Jens Kortus
- Institut für Theoretische Physik TU Bergakademie Freiberg Leipziger Str. 23 09599 Freiberg/Sa Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Germany
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8
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Sarkar S, Biswas A, Kamboj N, Dey RS. Unveiling the Potential of an Fe Bis(terpyridine) Complex for Precise Development of an Fe-N-C Electrocatalyst to Promote the Oxygen Reduction Reaction. Inorg Chem 2020; 59:13453-13464. [PMID: 32909753 DOI: 10.1021/acs.inorgchem.0c01879] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Improvements in highly efficient precious-metal-free electrocatalysts for the oxygen reduction reaction (ORR) are extremely important but still a significant challenge. Herein, we report a novel catalyst design strategy integrating a bis(terpyridine) (hexadentate chelating ligand) with Fe which acts as nitrogen, a self-supporting carbon source, and a potent metal-ligand active site binding structure (Fe-btpy) and promotes the formation of Fe-Nx/C active sites, bypassing the complications induced during Fe-N-C catalyst synthesis. The resulting Fe-N/C(H,P) electrocatalyst shows a very high ORR onset (Eonset) and half-wave potential (E1/2) of 1.05 and 0.89 V (vs reversible hydrogen electrode), respectively, outperforming the commercial Pt/C catalyst in alkaline medium. Most importantly, the Fe-N/C(H,P) catalyst displays decent stability and remarkable methanol tolerance in comparison to the Pt/C catalyst. A fabricated rechargeable zinc-air battery with an Fe-N/C(H,P) cathode catalyst demonstrated an excellent peak power density of 225 mW cm-2 at a current density of 240 mA cm-2, in comparison to the Pt/C cathode catalyst. This work illuminates blueprints utilizing a new long-chain one-dimensional macromolecule that could be viable to produce Fe-N/C-based carbon electrocatalysts toward energy conversion applications.
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Affiliation(s)
- Subhajit Sarkar
- Institute of Nano Science and Technology, Mohali 160062, Punjab, India
| | - Ashmita Biswas
- Institute of Nano Science and Technology, Mohali 160062, Punjab, India
| | - Navpreet Kamboj
- Institute of Nano Science and Technology, Mohali 160062, Punjab, India
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9
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Anjali BA, Suresh CH. Absorption and emission properties of 5-phenyl tris(8-hydroxyquinolinato) M(III) complexes (M = Al, Ga, In) and correlations with molecular electrostatic potential. J Comput Chem 2020; 41:1497-1508. [PMID: 32289191 DOI: 10.1002/jcc.26193] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 03/09/2020] [Indexed: 11/07/2022]
Abstract
Substituent effect for a series of 5-phenyl tris(8-hydroxyquinolinato) M(III) complexes (Mq3) of aluminum, gallium, and indium are investigated using density functional theory (DFT) for the ground state properties and the time-dependent version of DFT (TDDFT) for their absorption and emission properties. A comparison between the ground state energy of mer and fac isomers of all the complexes revealed that the mer configuration is always more stable than fac. The substituent effect is significantly reflected at the fluorescence maximum (λF ) values whereas the effect is moderate at the absorption maximum (λabs ) values. The molecular electrostatic potential (MESP) at the metal center (VM ) and the most electron rich region indicated by MESP minimum (Vmin ), located at the oxygen of phenoxide ring exhibit excellent correlations with the λF and Stokes shift (λF -λabs ) values. The study suggests the use of Stokes shift as an experimental quantity to measure the excited state substituent effect while the Vmin or VM emerge as theoretical quantities to measure the same.
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Affiliation(s)
- Bai A Anjali
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum, India.,Academy of Scientific & Innovative Research (AcSIR), CSIR-NIIST Campus, Trivandrum, India
| | - Cherumuttathu H Suresh
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum, India.,Academy of Scientific & Innovative Research (AcSIR), CSIR-NIIST Campus, Trivandrum, India
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10
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Bulteau Y, Tarrat N, Pébère N, Lacaze-Dufaure C. 8-Hydroxyquinoline complexes (Alq3) on Al(111): atomic scale structure, energetics and charge distribution. NEW J CHEM 2020. [DOI: 10.1039/d0nj02824j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
8-Hydroxyquinoline (8Hq) is known to efficiently inhibit the corrosion of aluminium by forming metal–organic layers (8Hq forms complexes with aluminium atoms).
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Affiliation(s)
- Yann Bulteau
- CIRIMAT
- Université de Toulouse
- CNRS
- INP-ENSIACET
- Toulouse cedex 31030
| | | | - Nadine Pébère
- CIRIMAT
- Université de Toulouse
- CNRS
- INP-ENSIACET
- Toulouse cedex 31030
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11
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Kwak SW, Kim MB, Shin H, Lee JH, Hwang H, Ryu JY, Lee J, Kim M, Chung Y, Choe JC, Kim Y, Lee KM, Park MH. A Series of Quinolinol-Based Indium Luminophores: A Rational Design Approach for Manipulating Photophysical Properties. Inorg Chem 2019; 58:8056-8063. [PMID: 31120743 DOI: 10.1021/acs.inorgchem.9b00802] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Moon Bae Kim
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | | | - Ji Hye Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Ji Yeon Ryu
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | | | | | - Joong Chul Choe
- Department of Chemistry, Dongguk University-Seoul, 04620, Republic of Korea
| | | | - Kang Mun Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
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12
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Grice KA, Griffin GB, Cao PS, Saucedo C, Niyazi AH, Aldakheel FA, Sterbinsky GE, LeSuer RJ. Elucidating the Solution-Phase Structure and Behavior of 8-Hydroxyquinoline Zinc in DMSO. J Phys Chem A 2018; 122:2906-2914. [PMID: 29510044 DOI: 10.1021/acs.jpca.7b12632] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The solution-phase structure and electronic relaxation dynamics of zinc bis-8-hydroxyquinoline [Zn(8HQ)2] in dimethyl sulfoxide (DMSO) were examined using a broad array of spectroscopic techniques, complimented by ab initio calculations of molecular structure. The ground-state structure was determined using extended X-ray absorption fine structure (EXAFS) data collected on the Zn K-edge and diffusion ordered spectroscopy (DOSY) NMR. The complex was found to be monomeric and octahedral, with two bidentate 8-hydroxyquinolate ligands and two DMSO molecules coordinated to the zinc through oxygen atoms. Electronic relaxation dynamics were examined with ultrafast transient absorption spectroscopy and complementary density functional calculations. Electronic relaxation was observed to proceed through both singlet and triplet pathways. This solution-phase data provides a deeper physical understanding of the behavior of this molecule, which has a variety of uses such as sensing, OLEDs, and biological applications.
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Affiliation(s)
- Kyle A Grice
- Department of Chemistry and Biochemistry , DePaul University , 1110 West Belden Ave , Chicago , Illinois 60614 , United States
| | - Graham B Griffin
- Department of Chemistry and Biochemistry , DePaul University , 1110 West Belden Ave , Chicago , Illinois 60614 , United States
| | - Phoebus Sun Cao
- Department of Chemistry and Biochemistry , DePaul University , 1110 West Belden Ave , Chicago , Illinois 60614 , United States
| | - Cesar Saucedo
- Department of Chemistry and Biochemistry , DePaul University , 1110 West Belden Ave , Chicago , Illinois 60614 , United States
| | - Aeshah H Niyazi
- Department of Chemistry and Biochemistry , DePaul University , 1110 West Belden Ave , Chicago , Illinois 60614 , United States
| | - Fatimah A Aldakheel
- Department of Chemistry and Biochemistry , DePaul University , 1110 West Belden Ave , Chicago , Illinois 60614 , United States
| | - George E Sterbinsky
- Advanced Photon Source , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Robert J LeSuer
- Department of Chemistry and Biochemistry , The College at Brockport, State University of New York , Brockport , New York 14420 , United States
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13
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Frizzo CP, Bender CR, Salbego PRS, Farias CAA, Villetti MA, Martins MAP. Heteroassembly Ability of Dicationic Ionic Liquids and Neutral Active Pharmaceutical Ingredients. ACS OMEGA 2018; 3:2282-2291. [PMID: 31458529 PMCID: PMC6641490 DOI: 10.1021/acsomega.7b02097] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Accepted: 02/13/2018] [Indexed: 06/10/2023]
Abstract
Extensive investigation of interactions and aggregation properties of IL + API systems is necessary to apply ionic liquids (ILs) with different hydrophobic characteristics to drug delivery or in active pharmaceutical ingredient (API) formulations. Therefore, this study aims to investigate the heteroassembly between dicationic ILs ([BisOct(MIM)2][2X], in which X is Br or BF4, and [BisOct(BnIM)2][2Br]), both in the absence and the presence of neutral APIs (salicylic acid, ibuprofen, and paracetamol) with different functional groups. Isothermal titration calorimetry results demonstrate that IL-API associations occur at very low concentrations of IL. These results were reinforced by electrospray ionization mass spectrometry with variable collision-induced dissociation, in which the IL dication interactions with APIs were detected. The strength of the dication-API interaction was determined from E cm,1/2 data. The aggregation parameters (cac, ΔG agg °, and K) between ILs and APIs were evaluated by conductivity. The 1H NMR data showed that differences in chemical shifts provided relevant insights about interaction sites in both components.
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Affiliation(s)
- Clarissa P. Frizzo
- Núcleo
de Química de Heterociclos (NUQUIMHE), Department
of Chemistry, and Laboratório de Espectroscopia e Polímeros (LEPOL),
Department of Physics, Federal University
of Santa Maria, UFSM, 97105-900 Santa Maria, Rio
Grande do Sul, Brazil
| | - Caroline R. Bender
- Núcleo
de Química de Heterociclos (NUQUIMHE), Department
of Chemistry, and Laboratório de Espectroscopia e Polímeros (LEPOL),
Department of Physics, Federal University
of Santa Maria, UFSM, 97105-900 Santa Maria, Rio
Grande do Sul, Brazil
| | - Paulo R. S. Salbego
- Núcleo
de Química de Heterociclos (NUQUIMHE), Department
of Chemistry, and Laboratório de Espectroscopia e Polímeros (LEPOL),
Department of Physics, Federal University
of Santa Maria, UFSM, 97105-900 Santa Maria, Rio
Grande do Sul, Brazil
| | - Carla A. A. Farias
- Núcleo
de Química de Heterociclos (NUQUIMHE), Department
of Chemistry, and Laboratório de Espectroscopia e Polímeros (LEPOL),
Department of Physics, Federal University
of Santa Maria, UFSM, 97105-900 Santa Maria, Rio
Grande do Sul, Brazil
| | - Marcos A. Villetti
- Núcleo
de Química de Heterociclos (NUQUIMHE), Department
of Chemistry, and Laboratório de Espectroscopia e Polímeros (LEPOL),
Department of Physics, Federal University
of Santa Maria, UFSM, 97105-900 Santa Maria, Rio
Grande do Sul, Brazil
| | - Marcos A. P. Martins
- Núcleo
de Química de Heterociclos (NUQUIMHE), Department
of Chemistry, and Laboratório de Espectroscopia e Polímeros (LEPOL),
Department of Physics, Federal University
of Santa Maria, UFSM, 97105-900 Santa Maria, Rio
Grande do Sul, Brazil
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14
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Hennemann BL, Bender CR, Salbego PR, Meyer AR, Belladona AL, Zanatta N, Bonacorso HG, Villetti MA, Martins MA, Frizzo CP. Models for understanding the structural effects on the cation-anion interaction strength of dicationic ionic liquids. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.12.110] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Two 8-Hydroxyquinolinate Based Supramolecular Coordination Compounds: Synthesis, Structures and Spectral Properties. MATERIALS 2017; 10:ma10030313. [PMID: 28772672 PMCID: PMC5503320 DOI: 10.3390/ma10030313] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 03/03/2017] [Accepted: 03/16/2017] [Indexed: 02/04/2023]
Abstract
Two new Cr(III) complexes based on 2-substituted 8-hydroxyquinoline ligands, namely [Cr(L1)3] (1), (HL1=(E)-2-[2-(4-nitro-phenyl)-vinyl]-8-hydroxy-quinoline) and [Cr(L2)3] (2), (HL2=(E)-2-[2-(4-chloro-phenyl)vinyl]-8-hydroxy-quinoline), were prepared by a facile hydrothermal method and characterized thoroughly by single crystal X-ray diffraction, powder X-ray diffraction, FTIR, TGA, ESI-MS, UV-Visible absorption spectra and fluorescence emission spectra. Single crystal X-ray diffraction analyses showed that the two compounds featured 3D supramolecular architectures constructed from noncovalent interactions, such as π···π stacking, C-H···π, C-H···O, C-Cl···π, C-H···Cl interactions. The thermogravimetric analysis and ESI-MS study of compounds 1 and 2 suggested that the Cr(III) complexes possessed good stability both in solid and solution. In addition, the ultraviolet and fluorescence response of the HL1 and HL2 shown marked changes upon their complexation with Cr(III) ion, which indicated that the two 8-hydroxyquinolinate based ligand are promising heavy metal chelating agent for Cr3+.
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16
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Tamura Y, Hisamatsu Y, Kumar S, Itoh T, Sato K, Kuroda R, Aoki S. Efficient Synthesis of Tris-Heteroleptic Iridium(III) Complexes Based on the Zn2+-Promoted Degradation of Tris-Cyclometalated Iridium(III) Complexes and Their Photophysical Properties. Inorg Chem 2016; 56:812-833. [DOI: 10.1021/acs.inorgchem.6b02270] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yuichi Tamura
- Faculty of Pharmaceutical Science and §Division of Medical-Science-Engineering
Cooperation, ∥Imaging Frontier Center, ‡Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yosuke Hisamatsu
- Faculty of Pharmaceutical Science and §Division of Medical-Science-Engineering
Cooperation, ∥Imaging Frontier Center, ‡Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Sarvendra Kumar
- Faculty of Pharmaceutical Science and §Division of Medical-Science-Engineering
Cooperation, ∥Imaging Frontier Center, ‡Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Taiki Itoh
- Faculty of Pharmaceutical Science and §Division of Medical-Science-Engineering
Cooperation, ∥Imaging Frontier Center, ‡Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Kyouhei Sato
- Faculty of Pharmaceutical Science and §Division of Medical-Science-Engineering
Cooperation, ∥Imaging Frontier Center, ‡Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Reiko Kuroda
- Faculty of Pharmaceutical Science and §Division of Medical-Science-Engineering
Cooperation, ∥Imaging Frontier Center, ‡Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Shin Aoki
- Faculty of Pharmaceutical Science and §Division of Medical-Science-Engineering
Cooperation, ∥Imaging Frontier Center, ‡Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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