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Gkatziouras C, Solakidou M, Louloudi M. Efficient [Fe-Imidazole@SiO 2] Nanohybrids for Catalytic H 2 Production from Formic Acid. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13101670. [PMID: 37242086 DOI: 10.3390/nano13101670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/14/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023]
Abstract
Three imidazole-based hybrid materials, coded as IGOPS, IPS and impyridine@SiO2 nanohybrids, were prepared via the covalent immobilization of N-ligands onto a mesoporous nano-SiO2 matrix for H2 generation from formic acid (FA). BET and HRTEM demonstrated that the immobilization of the imidazole derivative onto SiO2 has a significant effect on the SSA, average pore volume, and particle size distribution. In the context of FA dehydrogenation, their catalytic activity (TONs, TOFs), stability, and reusability were assessed. Additionally, the homologous homogeneous counterparts were evaluated for comparison purposes. Mapping the redox potential of solution Eh vs. SHE revealed that poly-phosphine PP3 plays an essential role in FA dehydrogenation. On the basis of performance and stability, [Fe2+/IGOPS/PP3] demonstrated superior activity compared to other heterogeneous catalysts, producing 9.82 L of gases (VH2 + CO2) with TONs = 31,778, albeit with low recyclability. In contrast, [Fe2+/IPS/PP3] showed the highest stability, retaining considerable performance after three consecutive uses. With VH2 + CO2 = 7.8 L, [Fe2+/impyridine@SiO2/PP3] activity decreased, and it was no longer recyclable. However, the homogeneous equivalent of [Fe2+/impyridine/PP3] was completely inactive. Raman, FT/IR, and UV/Vis spectroscopy demonstrated that the reduced recyclability of [Fe2+/IGOPS/PP3] and [Fe2+/impyridine@SiO2/PP3] nanohybrids is due to the reductive cleavage of their C-O-C bonds during catalysis. An alternative grafting procedure is proposed, applying here to the grafting of IPS, resulting in its higher stability. The accumulation of water derived from substrate's feeding causes the inhibition of catalysis. In the case of [Fe2+-imidazole@SiO2] nanohybrids, simple washing and drying result in their re-activation, overcoming the water inhibition. Thus, the low-cost imidazole-based nanohybrids IGOPS and IPS are capable of forming [Fe2+/IGOPS/PP3] and [Fe2+/IPS/PP3] heterogeneous catalytic systems with high stability and performance for FA dehydrogenation.
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Affiliation(s)
- Christos Gkatziouras
- Laboratory of Biomimetic Catalysis & Hybrid Materials, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece
| | - Maria Solakidou
- Laboratory of Biomimetic Catalysis & Hybrid Materials, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece
| | - Maria Louloudi
- Laboratory of Biomimetic Catalysis & Hybrid Materials, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece
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Prajapati S, Sinha P, Suryavanshi KK, Jana S. Recognition of monocarboxylic acids by imidazole‐containing receptors. J PHYS ORG CHEM 2022. [DOI: 10.1002/poc.4397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sunita Prajapati
- Department of Chemistry Indira Gandhi National Tribal University (Central University) Amarkantak MP India
| | - Puspita Sinha
- Department of Chemistry Indira Gandhi National Tribal University (Central University) Amarkantak MP India
| | - Kishor Kumar Suryavanshi
- Department of Chemistry Indira Gandhi National Tribal University (Central University) Amarkantak MP India
| | - Subrata Jana
- Department of Chemistry Indira Gandhi National Tribal University (Central University) Amarkantak MP India
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Aouina A, Oloyede HO, Akong RA, Abdelhak J, Görls H, Plass W, Eseola AO. Molecular variation and fluorescent turn-on detection of chromium(III) by three ESIPT-reactive 2,2'-(1,4-phenylenebis(5-phenyl-1H-imidazole-4,2-diyl))diphenols. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.113006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Eseola AO, Görls H, Orighomisan Woods JA, Plass W. Single monodentate N-donor ligands versus multi-ligand analogues in Pd(II)-catalysed C–C coupling at reduced temperatures. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Harsha KG, Appalanaidu E, Rao BA, Baggi TR, Rao VJ. ON–OFF Fluorescent Imidazole Derivative for Sensitive and Selective Detection of Copper(II) Ions. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1070428020010248] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Pan X, Kuang XN, Zhu N, Wang G, Yang YP, Liu JM, Li ZF, Xin XL, Han HL, Jin QH, Ren ZG, Zhang JW. Terahertz time-domain absorption spectra of Cu(i) complexes bearing tetraphosphine ligands: the bridge between the C–H⋯π and π⋯π interactions and photoluminescence properties. Dalton Trans 2020; 49:14941-14950. [DOI: 10.1039/d0dt02542a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The terahertz spectrum bridges the luminescence and C–H⋯π and π⋯π interactions of Cu(i) complexes.
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Oloyede HO, Görls H, Orighomisan Woods JA, Plass W, Eseola AO. N-donor 2-(Sulfonamido)benzamide ligands, their palladium(II) coordination species and C–C coupling catalysis efficiencies. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.07.054] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Eseola AO, Görls H, Plass W. Importance of monodentate mono-ligand designs in developing N-stabilized Pd catalysts for efficient ambient temperature C C coupling: Donor strengths and steric features. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.110398] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Liu X, Shan Y, Xu J, Zhang X, Shang S, Li XL. Alcohol soluble Cu(I) complexes with aggregation-induced phosphorescent emission in ethanol/water solvents. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.02.054] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Niu YW, Liu X, Zhao L, Guo YM, Li WX, Ma MM, Li XL. Synthesis, structures and photophysical properties of four binuclear Cu(I) complexes of 1H-imidazo[4,5-f][1,10]phenanthroline. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.10.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Eseola AO, Görls H, Bangesh M, Plass W. ESIPT-capable 2,6-di(1H-imidazol-2-yl)phenols with very strong fluorescent sensing signals towards Cr(iii), Zn(ii), and Cd(ii): molecular variation effects on turn-on efficiency. NEW J CHEM 2018. [DOI: 10.1039/c8nj01265b] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The derivatization influence was studied for twelve 2,6-di(1H-imidazol-2-yl)phenols, whereby a strong fluorescent sensitivity for Cr(iii) was reported, while Zn(ii)/Cd(ii) sensing potentials also appeared.
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Affiliation(s)
- Abiodun O. Eseola
- Materials Chemistry Group
- Department of Chemical Sciences
- Redeemer's University Ede
- Nigeria
- Institut für Anorganische und Analytische Chemie
| | - Helmar Görls
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität Jena
- D-07743 Jena
- Germany
| | | | - Winfried Plass
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität Jena
- D-07743 Jena
- Germany
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Synthesis and spectral properties of new ethylene glycol bridged oxazol-5-ones: High Stokes' shift fluorophores sensitive to solvent polarity. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.09.092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Zhu X, Cui P, Kilina S, Sun W. Multifunctional Cationic Iridium(III) Complexes Bearing 2-Aryloxazolo[4,5-f][1,10]phenanthroline (N^N) Ligand: Synthesis, Crystal Structure, Photophysics, Mechanochromic/Vapochromic Effects, and Reverse Saturable Absorption. Inorg Chem 2017; 56:13715-13731. [PMID: 29083889 DOI: 10.1021/acs.inorgchem.7b01472] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of 2-aryloxazolo[4,5-f][1,10]phenanthroline ligands (N^N ligands) and their cationic iridium(III) complexes (1-11, aryl = 4-NO2-phenyl (1), 4-Br-phenyl (2), Ph (3), 4-NPh2-phenyl (4), 4-NH2-phenyl (5), pyridin-4-yl (6), naphthalen-1-yl (7), naphthalen-2-yl (8), phenanthren-9-yl (9), anthracen-9-yl (10), and pyren-1-yl (11)) were synthesized and characterized. By introducing different electron-donating or electron-withdrawing substituents at the 4-position of the 2-phenyl ring (1-5), or different aromatic substituents with varied degrees of π-conjugation (6-11) on oxazolo[4,5-f][1,10]phenanthroline ligand, we aim to understand the effects of terminal substituents at the N^N ligands on the photophysics of cationic Ir(III) complexes using both spectroscopic methods and quantum chemistry calculations. Complexes with the 4-R-phenyl substituents adopted an almost coplanar structure with the oxazolo[4,5-f][1,10]phenanthroline motif, while the polycyclic aryl substituents (except for naphthalen-2-yl) were twisted away from the oxazolo[4,5-f][1,10]phenanthroline motif. All complexes possessed strong absorption bands below 350 nm that emanated from the ligand-localized 1π,π*/1ILCT (intraligand charge transfer) transitions, mixed with 1LLCT (ligand-to-ligand charge transfer)/1MLCT (metal-to-ligand charge transfer) transitions. At the range of 350-570 nm, all complexes exhibited moderately strong 1ILCT/1LLCT/1MLCT transitions at 350-450 nm, and broad but very weak 3LLCT/3MLCT absorption at 450-570 nm. Most of the complexes demonstrated moderate to strong room temperature phosphorescence both in solution and in the solid state. Among them, complex 7 also manifested a drastic mechanochromic and vapochromic luminescence effect. Except for complexes 1 and 4 that contain NO2 or NPh2 substituent at the phenyl ring, respectively, all other complexes exhibited moderate to strong triplet excited-state absorption in the spectral region of 440-750 nm. Moderate to very strong reverse saturable absorption (RSA) of these complexes appeared at 532 nm for 4.1 ns laser pulses. The RSA strength followed the trend of 7 > 11 > 9 > 3 > 2 ≈ 4 > 5 ≈ 10 ≈ 6 ≈ 8 > 1. The photophysical studies revealed that the different 2-aryl substituents on the oxazole ring impacted the singlet and triplet excited-state characteristics dramatically, which in turn notably influenced the RSA of these complexes.
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Affiliation(s)
- Xiaolin Zhu
- Department of Chemistry and Biochemistry, North Dakota State University , Fargo, North Dakota 58108-6050, United States
| | - Peng Cui
- Department of Chemistry and Biochemistry, North Dakota State University , Fargo, North Dakota 58108-6050, United States.,Materials and Nanotechnology Program, North Dakota State University , Fargo, North Dakota 58105, United States
| | - Svetlana Kilina
- Department of Chemistry and Biochemistry, North Dakota State University , Fargo, North Dakota 58108-6050, United States
| | - Wenfang Sun
- Department of Chemistry and Biochemistry, North Dakota State University , Fargo, North Dakota 58108-6050, United States
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Cyclometallation, steric and electronic tendencies in a series of Pd(II) complex pre-catalysts bearing imidazole–phenol ligands and effects on Suzuki–Miyaura catalytic efficiencies. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.06.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Qin Y, Chen Y, Liu J, Zhao J, Gao D, Li Y, Liu W, Li W. CrIII and CuI complexes of 2,2′,2″-(1H-imidazole-2,4,5-triyl)-tripyridine: In situ generation of imidazole ring from the coupling of picolinaldehyde and ammonium acetate. INORG CHEM COMMUN 2015. [DOI: 10.1016/j.inoche.2015.03.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ligand characteristics and in situ generation of Pd active species towards CC coupling using series of 2-(1H-imidazol-2-yl)phenols. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.02.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Bushuev MB, Selivanov BA, Pervukhina NV, Naumov DY, Sheludyakova LA, Rakhmanova MI, Tikhonov AY, Larionov SV. Zinc(II) complexes with an imidazolylpyridine ligand: luminescence and hydrogen bonding. J COORD CHEM 2014. [DOI: 10.1080/00958972.2014.892589] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Mark B. Bushuev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
- Department of Natural Sciences, Novosibirsk State University (National Research University), Novosibirsk, Russia
| | - Boris A. Selivanov
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Natalia V. Pervukhina
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Dmitrii Yu. Naumov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Lilia A. Sheludyakova
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
- Department of Natural Sciences, Novosibirsk State University (National Research University), Novosibirsk, Russia
| | - Marianna I. Rakhmanova
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Alexsei Ya. Tikhonov
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Stanislav V. Larionov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
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Eseola AO, Geibig D, Görls H, Sun WH, Hao X, Woods JAO, Plass W. Palladium(II) complexes bearing 2-(1H-imidazol/oxazol-2-yl)-pyridines: Synthesis, structures and ligand effects in Suzuki–Miyaura cross-coupling. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.12.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Yang H, Liu Y, Hu DD. Syntheses, Structures, and Catalytic Activities of Copper(I) Complexes with the Ligand 2(4,5-Diphenyl-1H-imidazol-2-yl)pyridine. Z Anorg Allg Chem 2014. [DOI: 10.1002/zaac.201300223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Buchholz A, Eseola AO, Plass W. Slow magnetic relaxation in mononuclear tetrahedral cobalt(II) complexes with 2-(1H-imidazol-2-yl)phenol based ligands. CR CHIM 2012. [DOI: 10.1016/j.crci.2012.07.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Zhao Y, Lin M, Chen Z, Pei H, Li Y, Chen Y, Wang X, Li L, Cao Y, Zhang Y, Li W. Titanium and zirconium amido complexes supported by imidazole-containing ligands: syntheses, characterization and catalytic activities. RSC Adv 2012. [DOI: 10.1039/c1ra00408e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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23
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Eseola AO, Adepitan O, Görls H, Plass W. Electronic/substituents influence on imidazole ring donor–acceptor capacities using 1H-imidazo[4,5-f][1,10]phenanthroline frameworks. NEW J CHEM 2012. [DOI: 10.1039/c2nj20880f] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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McCulloch MWB, Berrue F, Haltli B, Kerr RG. One-pot syntheses of pseudopteroxazoles from pseudopterosins: a rapid route to non-natural congeners with improved antimicrobial activity. JOURNAL OF NATURAL PRODUCTS 2011; 74:2250-6. [PMID: 21978379 DOI: 10.1021/np2006555] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Rapid one-pot methodologies to prepare pseudopteroxazole (1) and novel congeners from abundant natural pseudopterosins have been devised. This is highlighted here with the first synthesis of the marine natural product homopseudopteroxazole (2) utilizing a novel, silver(I)-mediated catechol to benzoxazole transformation. Pseudopteroxazoles and isopseudopteroxazoles exhibit potent activity against a range of important Gram-positive pathogens including Mycobacterium spp. and vancomycin-resistant Enterococcus faecium. Several non-natural pseudopteroxazoles exhibited strong activity against methicillin-resistant Staphylococcus aureus, thereby displaying a broader spectrum of antibiotic activity compared to pseudopteroxazole.
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Affiliation(s)
- Malcolm W B McCulloch
- Department of Chemistry, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PEI C1A 4P3, Canada
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Eseola AO, Sun WH, Li W, Woods JA. Syntheses of new imidazole ligand series and evaluation of 1-, 2- and 4,5-imidazole substituent electronic and steric effects on N-donor strengths. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.09.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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