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Guerrero I, Viñas C, Teixidor F, Romero I. Unveiling Non-Covalent Interactions in Novel Cooperative Photoredox Systems for Efficient Alkene Oxidation in Water. Molecules 2024; 29:2378. [PMID: 38792238 PMCID: PMC11123843 DOI: 10.3390/molecules29102378] [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: 04/24/2024] [Revised: 05/13/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024] Open
Abstract
A new cooperative photoredox catalytic system, [RuII(trpy)(bpy)(H2O)][3,3'-Co(8,9,12-Cl3-1,2-C2B9H8)2]2, 5, has been synthesized and fully characterized for the first time. In this system, the photoredox catalyst [3,3'-Co(8,9,12-Cl3-1,2-C2B9H8)2]-[Cl6-1]-, a metallacarborane, and the oxidation catalyst [RuII(trpy)(bpy)(H2O)]2+, 2 are linked by non-covalent interactions. This compound, along with the one previously synthesized by us, [RuII(trpy)(bpy)(H2O)][(3,3'-Co(1,2-C2B9H11)2]2, 4, are the only examples of cooperative molecular photocatalysts in which the catalyst and photosensitizer are not linked by covalent bonds. Both cooperative systems have proven to be efficient photocatalysts for the oxidation of alkenes in water through Proton Coupled Electron Transfer processes (PCETs). Using 0.05 mol% of catalyst 4, total conversion values were achieved after 15 min with moderate selectivity for the corresponding epoxides, which decreases with reaction time, along with the TON values. However, with 0.005 mol% of catalyst, the conversion values are lower, but the selectivity and TON values are higher. This occurs simultaneously with an increase in the amount of the corresponding diol for most of the substrates studied. Photocatalyst 4 acts as a photocatalyst in both the epoxidation of alkenes and their hydroxylation in aqueous medium. The hybrid system 5 shows generally higher conversion values at low loads compared to those obtained with 4 for most of the substrates studied. However, the selectivity values for the corresponding epoxides are lower even after 15 min of reaction. This is likely due to the enhanced oxidizing capacity of CoIV in catalyst 5, resulting from the presence of more electron-withdrawing substituents on the metallacarborane platform.
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Affiliation(s)
- Isabel Guerrero
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, E-08193 Bellaterra, Spain; (I.G.); (C.V.)
| | - Clara Viñas
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, E-08193 Bellaterra, Spain; (I.G.); (C.V.)
| | - Francesc Teixidor
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, E-08193 Bellaterra, Spain; (I.G.); (C.V.)
| | - Isabel Romero
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, C/M. Aurèlia Campmany, 69, E-17003 Girona, Spain
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2
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Poater J, Escayola S, Poater A, Teixidor F, Ottosson H, Viñas C, Solà M. Single─Not Double─3D-Aromaticity in an Oxidized Closo Icosahedral Dodecaiodo-Dodecaborate Cluster. J Am Chem Soc 2023; 145:22527-22538. [PMID: 37728951 PMCID: PMC10591335 DOI: 10.1021/jacs.3c07335] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Indexed: 09/22/2023]
Abstract
3D-aromatic molecules with (distorted) tetrahedral, octahedral, or spherical structures are much less common than typical 2D-aromatic species or even 2D-aromatic-in-3D systems. Closo boranes, [BnHn]2- (5 ≤ n ≤ 14) and carboranes are examples of compounds that are singly 3D-aromatic, and we now explore if there are species that are doubly 3D-aromatic. The most widely known example of a species with double 2D-aromaticity is the hexaiodobenzene dication, [C6I6]2+. This species shows π-aromaticity in the benzene ring and σ-aromaticity in the outer ring formed by the iodine substituents. Inspired by the hexaiodobenzene dication example, in this work, we explore the potential for double 3D-aromaticity in [B12I12]0/2+. Our results based on magnetic and electronic descriptors of aromaticity together with 11B{1H} NMR experimental spectra of boron-iodinated o-carboranes suggest that these two oxidized forms of a closo icosahedral dodecaiodo-dodecaborate cluster, [B12I12] and [B12I12]2+, behave as doubly 3D-aromatic compounds. However, an evaluation of the energetic contribution of the potential double 3D-aromaticity through homodesmotic reactions shows that delocalization in the I12 shell, in contrast to the 10σ-electron I62+ ring in the hexaiodobenzene dication, does not contribute to any stabilization of the system. Therefore, the [B12I12]0/2+ species cannot be considered as doubly 3D-aromatic.
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Affiliation(s)
- Jordi Poater
- Departament
de Química Inorgànica i Orgànica & IQTCUB, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
- ICREA, Pg. Lluís
Companys 23, 08010 Barcelona, Spain
| | - Sílvia Escayola
- Departament
de Química, Institut de Química
Computacional i Catàlisi, Universitat de Girona, C/Maria Aurèlia Capmany,
69, 17003 Girona, Catalonia Spain
- Donostia
International Physics Center (DIPC), 20018 Donostia, Euskadi Spain
| | - Albert Poater
- Departament
de Química, Institut de Química
Computacional i Catàlisi, Universitat de Girona, C/Maria Aurèlia Capmany,
69, 17003 Girona, Catalonia Spain
| | - Francesc Teixidor
- Institut
de Ciència de Materials de Barcelona, Consejo Superior de Investigaciones
Científicas, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Henrik Ottosson
- Department
of Chemistry - Ångström Laboratory, Uppsala University, 751
20 Uppsala, Sweden
| | - Clara Viñas
- Institut
de Ciència de Materials de Barcelona, Consejo Superior de Investigaciones
Científicas, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Miquel Solà
- Departament
de Química, Institut de Química
Computacional i Catàlisi, Universitat de Girona, C/Maria Aurèlia Capmany,
69, 17003 Girona, Catalonia Spain
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Patdiya J, Gavane GB, Kandasubramanian B. A review on polybenzimidazoles blends and nanocomposites for engineering applications. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2022.2069036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Jigar Patdiya
- Nano Surface Texturing Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune, India
| | - Ganesh B. Gavane
- Department of Plastic and Polymer Engineering, Maharashtra Institute of Technology, Aurangabad, India
| | - Balasubramanian Kandasubramanian
- Nano Surface Texturing Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune, India
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Faris BK, Hassan AA, Aziz SB, Brza MA, Abdullah AM, Abdalrahman AA, Abu Ali OA, Saleh DI. Impedance, Electrical Equivalent Circuit (EEC) Modeling, Structural (FTIR and XRD), Dielectric, and Electric Modulus Study of MC-Based Ion-Conducting Solid Polymer Electrolytes. MATERIALS 2021; 15:ma15010170. [PMID: 35009315 PMCID: PMC8746227 DOI: 10.3390/ma15010170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/14/2021] [Accepted: 12/24/2021] [Indexed: 12/28/2022]
Abstract
The polymer electrolyte system of methylcellulose (MC) doped with various sodium bromide (NaBr) salt concentrations is prepared in this study using the solution cast technique. FTIR and XRD were used to identify the structural changes in solid films. Sharp crystalline peaks appeared at the XRD pattern at 40 and 50 wt.% of NaBr salt. The electrical impedance spectroscopy (EIS) study illustrates that the loading of NaBr increases the electrolyte conductivity at room temperature. The DC conductivity of 6.71 × 10−6 S/cm is obtained for the highest conducting electrolyte. The EIS data are fitted with the electrical equivalent circuit (EEC) to determine the impedance parameters of each film. The EEC modeling helps determine the circuit elements, which is decisive from the engineering perspective. The DC conductivity tendency is further established by dielectric analysis. The EIS spectra analysis shows a decrease in bulk resistance, demonstrating free ion carriers and conductivity boost. The dielectric property and relaxation time confirmed the non-Debye behavior of the electrolyte system. An incomplete semicircle further confirms this behavior model in the Argand plot. The distribution of relaxation times is related to the presence of conducting ions in an amorphous structure. Dielectric properties are improved with the addition of NaBr salt. A high value of a dielectric constant is seen at the low frequency region.
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Affiliation(s)
- Balen K. Faris
- Hameed Majid Advanced Polymeric Materials Research Lab., Physics Department, College of Science, University of Sulaimani, Qlyasan Street, Kurdistan Regional Government, Sulaimani 46001, Iraq; (B.K.F.); (A.A.H.); (A.A.A.)
| | - Ary A. Hassan
- Hameed Majid Advanced Polymeric Materials Research Lab., Physics Department, College of Science, University of Sulaimani, Qlyasan Street, Kurdistan Regional Government, Sulaimani 46001, Iraq; (B.K.F.); (A.A.H.); (A.A.A.)
| | - Shujahadeen B. Aziz
- Hameed Majid Advanced Polymeric Materials Research Lab., Physics Department, College of Science, University of Sulaimani, Qlyasan Street, Kurdistan Regional Government, Sulaimani 46001, Iraq; (B.K.F.); (A.A.H.); (A.A.A.)
- Department of Civil Engineering, College of Engineering, Komar University of Science and Technology, Kurdistan Regional Government, Sulaimani 46001, Iraq
- Correspondence:
| | - Mohamad A. Brza
- Medical Physics Department, College of Medicals & Applied Science, Charmo University, Chamchamal 46023, Sulaimani, Iraq; (M.A.B.); (A.M.A.)
| | - Aziz M. Abdullah
- Medical Physics Department, College of Medicals & Applied Science, Charmo University, Chamchamal 46023, Sulaimani, Iraq; (M.A.B.); (A.M.A.)
| | - Ari A. Abdalrahman
- Hameed Majid Advanced Polymeric Materials Research Lab., Physics Department, College of Science, University of Sulaimani, Qlyasan Street, Kurdistan Regional Government, Sulaimani 46001, Iraq; (B.K.F.); (A.A.H.); (A.A.A.)
| | - Ola A. Abu Ali
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; (O.A.A.A.); (D.I.S.)
| | - Dalia I. Saleh
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; (O.A.A.A.); (D.I.S.)
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Zaulet A, Nuez M, Sillanpää R, Teixidor F, Viñas C. Towards purely inorganic clusters in medicine: Biocompatible divalent cations as counterions of cobaltabis(dicarbollide) and its iodinated derivatives. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Barjola A, Escorihuela J, García-Bernabé A, Sahuquillo Ó, Giménez E, Compañ V. Diffusivity and free anion concentration of ionic liquid composite polybenzimidazole membranes. RSC Adv 2021; 11:26379-26390. [PMID: 35479428 PMCID: PMC9037350 DOI: 10.1039/d1ra05364g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 07/27/2021] [Indexed: 11/21/2022] Open
Abstract
PBI composite membranes containing 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (BMIM-NTf2) at 1, 5, 10, 20 and 50 wt% have been prepared and the conductivity has been analyzed by electrochemical impedance spectroscopy.
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Affiliation(s)
- Arturo Barjola
- Instituto de Tecnología de Materiales
- Universitat Politècnica de València
- 46022 Valencia
- Spain
| | - Jorge Escorihuela
- Departamento de Química Orgánica
- Universitat de València
- 46100 Valencia
- Spain
| | - Abel García-Bernabé
- Departamento de Termodinámica Aplicada
- Universitat Politècnica de València
- 46022 Valencia
- Spain
| | - Óscar Sahuquillo
- Instituto de Tecnología de Materiales
- Universitat Politècnica de València
- 46022 Valencia
- Spain
| | - Enrique Giménez
- Instituto de Tecnología de Materiales
- Universitat Politècnica de València
- 46022 Valencia
- Spain
| | - Vicente Compañ
- Departamento de Termodinámica Aplicada
- Universitat Politècnica de València
- 46022 Valencia
- Spain
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Vega-Moreno J, Lemus-Santana A, Reguera E, Andrio A, Compañ V. High proton conductivity at low and moderate temperature in a simple family of Prussian blue analogs, divalent transition metal hexacyanocobaltates (III). Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136959] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Escorihuela J, Olvera-Mancilla J, Alexandrova L, del Castillo LF, Compañ V. Recent Progress in the Development of Composite Membranes Based on Polybenzimidazole for High Temperature Proton Exchange Membrane (PEM) Fuel Cell Applications. Polymers (Basel) 2020; 12:E1861. [PMID: 32825111 PMCID: PMC7564738 DOI: 10.3390/polym12091861] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/14/2020] [Accepted: 08/17/2020] [Indexed: 12/16/2022] Open
Abstract
The rapid increasing of the population in combination with the emergence of new energy-consuming technologies has risen worldwide total energy consumption towards unprecedent values. Furthermore, fossil fuel reserves are running out very quickly and the polluting greenhouse gases emitted during their utilization need to be reduced. In this scenario, a few alternative energy sources have been proposed and, among these, proton exchange membrane (PEM) fuel cells are promising. Recently, polybenzimidazole-based polymers, featuring high chemical and thermal stability, in combination with fillers that can regulate the proton mobility, have attracted tremendous attention for their roles as PEMs in fuel cells. Recent advances in composite membranes based on polybenzimidazole (PBI) for high temperature PEM fuel cell applications are summarized and highlighted in this review. In addition, the challenges, future trends, and prospects of composite membranes based on PBI for solid electrolytes are also discussed.
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Affiliation(s)
- Jorge Escorihuela
- Departamento de Química Orgánica, Universitat de València, Av. Vicent Andrés Estellés s/n, Burjassot, 46100 Valencia, Spain
| | - Jessica Olvera-Mancilla
- Departamento de Polímeros, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Coyoacán, Ciudad de México 04510, Mexico; (J.O.-M.); (L.A.); (L.F.d.C.)
| | - Larissa Alexandrova
- Departamento de Polímeros, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Coyoacán, Ciudad de México 04510, Mexico; (J.O.-M.); (L.A.); (L.F.d.C.)
| | - L. Felipe del Castillo
- Departamento de Polímeros, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Coyoacán, Ciudad de México 04510, Mexico; (J.O.-M.); (L.A.); (L.F.d.C.)
| | - Vicente Compañ
- Departamento de Termodinámica Aplicada (ETSII), Universitat Politècnica de València, Camino de Vera. s/n, 46022 Valencia, Spain
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Olvera-Mancilla J, Escorihuela J, Alexandrova L, Andrio A, García-Bernabé A, Del Castillo LF, Compañ V. Effect of metallacarborane salt H[COSANE] doping on the performance properties of polybenzimidazole membranes for high temperature PEMFCs. SOFT MATTER 2020; 16:7624-7635. [PMID: 32735001 DOI: 10.1039/d0sm00743a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this paper, a series of composite proton exchange membranes comprising a cobaltacarborane protonated H[Co(C2B9H11)2] named (H[COSANE]) and polybenzimidazole (PBI) for a high temperature proton exchange membrane fuel cell (PEMFC) is reported, with the aim of enhancing the proton conductivity of PBI membranes doped with phosphoric acid. The effects of the anion [Co(C2B9H11)2] concentration in three different polymeric matrices based on the PBI structure, poly(2,2'-(m-phenylene)-5,5'-bibenzimidazole) (PBI-1), poly[2,2'-(p-oxydiphenylene)-5,5'-bibenzimidazole] (PBI-2) and poly(2,2'-(p-hexafluoroisopropylidene)-5,5'-bibenzimidazole) (PBI-3), have been investigated. The conductivity, diffusivity and mobility are greater in the composite membrane poly(2,2'-(p-hexafluoroisopropylidene)-5,5'-bibenzimidazole) containing fluorinated groups, reaching a maximum when the amount of H[COSANE] was 15%. In general, all the prepared membranes displayed excellent and tunable properties as conducting materials, with conductivities higher than 0.03 S cm-1 above 140 °C. From an analysis of electrode polarization (EP) the proton diffusion coefficients and mobility have been calculated.
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Affiliation(s)
- Jessica Olvera-Mancilla
- Departamento de polímeros, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Apartado Postal 70-360, Coyoacán, Ciudad de México, 04510, Mexico
| | - Jorge Escorihuela
- Departamento de Química Orgánica, Universitat de València, Av. Vicente Andrés Estellés s/n, Burjassot 46100, Valencia, Spain.
| | - Larissa Alexandrova
- Departamento de polímeros, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Apartado Postal 70-360, Coyoacán, Ciudad de México, 04510, Mexico
| | - Andreu Andrio
- Departament de Física Aplicada, Universitat Jaume I, 12080, Castelló, Spain
| | - Abel García-Bernabé
- Departamento de Termodinámica Aplicada (ETSII), Universitat Politècnica de Valencia, Campus de Vera s/n, 46022 Valencia, Spain.
| | - Luis Felipe Del Castillo
- Departamento de polímeros, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Apartado Postal 70-360, Coyoacán, Ciudad de México, 04510, Mexico
| | - Vicente Compañ
- Departamento de Termodinámica Aplicada (ETSII), Universitat Politècnica de Valencia, Campus de Vera s/n, 46022 Valencia, Spain.
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MORIKAWA Y, YAMADA Y, DOI K, NISHIMURA SI, YAMADA A. Reversible and High-rate Hard Carbon Negative Electrodes in a Fluorine-free Sodium-salt Electrolyte. ELECTROCHEMISTRY 2020. [DOI: 10.5796/electrochemistry.19-00073] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Yusuke MORIKAWA
- Department of Chemical System Engineering, The University of Tokyo
| | - Yuki YAMADA
- Department of Chemical System Engineering, The University of Tokyo
- Elements Strategy Initiative for Catalysis & Batteries (ESICB), Kyoto University
| | - Kyosuke DOI
- Department of Chemical System Engineering, The University of Tokyo
| | - Shin-ichi NISHIMURA
- Department of Chemical System Engineering, The University of Tokyo
- Elements Strategy Initiative for Catalysis & Batteries (ESICB), Kyoto University
| | - Atsuo YAMADA
- Department of Chemical System Engineering, The University of Tokyo
- Elements Strategy Initiative for Catalysis & Batteries (ESICB), Kyoto University
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Guerrero I, Kelemen Z, Viñas C, Romero I, Teixidor F. Metallacarboranes as Photoredox Catalysts in Water. Chemistry 2020; 26:5027-5036. [PMID: 31999000 DOI: 10.1002/chem.201905395] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/22/2020] [Indexed: 12/18/2022]
Abstract
Metallacarboranes with the shape of the Greek letter θ, such as [Co(C2 B9 H11 )2 ]- , were tested, for the first time, as efficient photoredox catalysts in the oxidation of aromatic and aliphatic alcohols in water. Their efficiency is linked to their high solubility in water, their high oxidizing power (Co4+/3+ ), and their absence of fluorescence on excitation, among others. In most of the studied examples, using a catalyst load of 0.4 mol % gave high yields of 90-95 % with selectivity greater than 99 %. By reducing the catalyst load to 0.01 mol %, quantitative conversion of reactants to products was achieved, in some cases with greater than 99 % yield, high catalyst efficiency reaching a turnover number of 10 000, and a higher yield with a 45 times lower concentration of catalyst. The metallacarboranes can be recovered easily by precipitation on addition of [NMe4 ]Cl. A pathway for the photoredox-catalyzed oxidation of alcohols is proposed.
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Affiliation(s)
- Isabel Guerrero
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193, Bellaterra, Spain.,Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, C/ M. Aurèlia Campmany, 69, 17003, Girona, Spain
| | - Zsolt Kelemen
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193, Bellaterra, Spain
| | - Clara Viñas
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193, Bellaterra, Spain
| | - Isabel Romero
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, C/ M. Aurèlia Campmany, 69, 17003, Girona, Spain
| | - Francesc Teixidor
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193, Bellaterra, Spain
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Fuentes I, Mostazo‐López MJ, Kelemen Z, Compañ V, Andrio A, Morallón E, Cazorla‐Amorós D, Viñas C, Teixidor F. Are the Accompanying Cations of Doping Anions Influential in Conducting Organic Polymers? The Case of the Popular PEDOT. Chemistry 2019; 25:14308-14319. [DOI: 10.1002/chem.201902708] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/02/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Isabel Fuentes
- Institut de Ciència de Materials de BarcelonaICMAB-CSICUniversitat Autònoma de Barcelona 08193 Bellaterra, Barcelona Spain
| | | | - Zsolt Kelemen
- Institut de Ciència de Materials de BarcelonaICMAB-CSICUniversitat Autònoma de Barcelona 08193 Bellaterra, Barcelona Spain
| | - Vicente Compañ
- Escuela Técnica Superior de Ingenieros IndustrialesDepartamento de Termodinámica AplicadaUniversitat Politècnica de València Camino de Vera s/n 46022 Valencia Spain
| | - Andreu Andrio
- Departamento de Física AplicadaUniversitat Jaume I Avda. Sos Banyat s/n 12071 Castellón de la Plana Spain
| | - Emilia Morallón
- Instituto Universitario de MaterialesUniversidad de Alicante, Ap. 99 03080 Alicante Spain
| | - Diego Cazorla‐Amorós
- Instituto Universitario de MaterialesUniversidad de Alicante, Ap. 99 03080 Alicante Spain
| | - Clara Viñas
- Institut de Ciència de Materials de BarcelonaICMAB-CSICUniversitat Autònoma de Barcelona 08193 Bellaterra, Barcelona Spain
| | - Francesc Teixidor
- Institut de Ciència de Materials de BarcelonaICMAB-CSICUniversitat Autònoma de Barcelona 08193 Bellaterra, Barcelona Spain
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13
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Fuentes I, Pujols J, Viñas C, Ventura S, Teixidor F. Dual Binding Mode of Metallacarborane Produces a Robust Shield on Proteins. Chemistry 2019; 25:12820-12829. [DOI: 10.1002/chem.201902796] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/02/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Isabel Fuentes
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) Campus UAB 08193 Bellaterra, Barcelona Spain
| | - Jordi Pujols
- Institut de Biotecnologia i de BiomedicinaUniversitat Autònoma de Barcelona 08193 Bellaterra, Barcelona Spain
- Departament de Bioquímica i Biologia MolecularUniversitat Autònoma de Barcelona 08193 Bellaterra, Barcelona Spain
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) Campus UAB 08193 Bellaterra, Barcelona Spain
| | - Salvador Ventura
- Institut de Biotecnologia i de BiomedicinaUniversitat Autònoma de Barcelona 08193 Bellaterra, Barcelona Spain
- Departament de Bioquímica i Biologia MolecularUniversitat Autònoma de Barcelona 08193 Bellaterra, Barcelona Spain
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) Campus UAB 08193 Bellaterra, Barcelona Spain
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14
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Arya A, Sharma AL. Temperature and Salt-Dependent Dielectric Properties of Blend Solid Polymer Electrolyte Complexed with LiBOB. Macromol Res 2019. [DOI: 10.1007/s13233-019-7077-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Fuentes I, García-Mendiola T, Sato S, Pita M, Nakamura H, Lorenzo E, Teixidor F, Marques F, Viñas C. Metallacarboranes on the Road to Anticancer Therapies: Cellular Uptake, DNA Interaction, and Biological Evaluation of Cobaltabisdicarbollide [COSAN] . Chemistry 2018; 24:17239-17254. [PMID: 30222214 DOI: 10.1002/chem.201803178] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Indexed: 01/24/2023]
Abstract
After uptake by U87 MG and A375 cancer cells, cobaltabisdicarbollide [COSAN]- distributes between membrane and nucleus and presents no relevant cytotoxicity against both cell lines even for long incubation times. The cytotoxicity of Na[COSAN] was also tested towards one normal cell line, the V79 fibroblasts, in order to ascertain the noncytotoxic profile of the compound. As the cell's nucleus contains DNA, the interaction between [COSAN]- and double-stranded calf thymus DNA (CT-dsDNA) has been investigated. There is a strong interaction between both molecules forming a nanohybrid CT-dsDNA-[COSAN] biomaterial, which was fully characterized. Moreover, Na[COSAN] shows characteristic redox peaks ascribed to the oxidation/reduction of Co3+/2+ at a formal potential of -1.444 V and it can be accumulated at a surface-immobilized DNA layer of glassy carbon electrodes. The equilibrium surface-binding constants (Kox /Kred ), which confirm that [COSAN]- interacts with DNA by an intercalative or electrostatic mode, depending on the ionic strength of the solution, were estimated. In addition, high binding affinity of Na[COSAN] to proteins was observed by 11 B{1 H} NMR and confirmed in vivo. Finally, biodistribution studies of [COSAN]- in normal mice were run. After administration, Na[COSAN] was distributed into many organs but mainly accumulated in the reticuloendothelial system (RES), including liver and spleen. After 1 h, the formation of aggregates by plasma protein interaction plays a role in the biodistribution profile; the aggregates accumulate mostly in the lungs. Na[COSAN], which displays low toxicity and high uptake by relevant cancer cells accumulating boron within the nucleus, could act as a suitable compound for further developments as boron neutron capture therapy (BNCT) agents.
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Affiliation(s)
- Isabel Fuentes
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Tania García-Mendiola
- Instituto Madrileño de Estudios Avanzados (IMDEA) Nanociencia, 28049, Madrid, Spain.,Departamento Química AnalíticayAnálisis Instrumental, Universidad Autónoma de Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Shinichi Sato
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8503, Japan
| | - Marcos Pita
- Instituto de Catalisis (CSIC), Campus Universidad Autónoma, 28049, Madrid, Spain
| | - Hiroyuki Nakamura
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8503, Japan
| | - Encarnación Lorenzo
- Instituto Madrileño de Estudios Avanzados (IMDEA) Nanociencia, 28049, Madrid, Spain.,Departamento Química AnalíticayAnálisis Instrumental, Universidad Autónoma de Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139.7), 2695-066, Bobadela, LRS, Portugal
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Barcelona, Spain
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Nar I, Atsay A, Gümrükçü S, Karazehir T, Hamuryudan E. Low‐Symmetry Phthalocyanine Cobalt Bis(dicarbollide) Conjugate for Hydrogen Reduction. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ilgın Nar
- Department of Chemistry Istanbul Technical University 34469 Maslak, Istanbul Turkey
| | - Armağan Atsay
- Department of Chemistry Istanbul Technical University 34469 Maslak, Istanbul Turkey
| | - Selin Gümrükçü
- Department of Chemistry Istanbul Technical University 34469 Maslak, Istanbul Turkey
| | - Tolga Karazehir
- Department of Energy System Engineering Adana Science and Technology University 01250 Saricam, Adana Turkey
| | - Esin Hamuryudan
- Department of Chemistry Istanbul Technical University 34469 Maslak, Istanbul Turkey
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17
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Arya A, Sharma AL. Structural, electrical properties and dielectric relaxations in Na +-ion-conducting solid polymer electrolyte. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:165402. [PMID: 29508771 DOI: 10.1088/1361-648x/aab466] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this paper, we have studied the structural, microstructural, electrical, dielectric properties and ion dynamics of a sodium-ion-conducting solid polymer electrolyte film comprising PEO8-NaPF6+ x wt. % succinonitrile. The structural and surface morphology properties have been investigated, respectively using x-ray diffraction and field emission scanning electron microscopy. The complex formation was examined using Fourier transform infrared spectroscopy, and the fraction of free anions/ion pairs obtained via deconvolution. The complex dielectric permittivity and loss tangent has been analyzed across the whole frequency window, and enables us to estimate the DC conductivity, dielectric strength, double layer capacitance and relaxation time. The presence of relaxing dipoles was determined by the addition of succinonitrile (wt./wt.) and the peak shift towards high frequency indicates the decrease of relaxation time. Further, relations among various relaxation times ([Formula: see text]) have been elucidated. The complex conductivity has been examined across the whole frequency window; it obeys the Universal Power Law, and displays strong dependency on succinonitrile content. The sigma representation ([Formula: see text]) was introduced in order to explore the ion dynamics by highlighting the dispersion region in the Cole-Cole plot ([Formula: see text]) in the lower frequency window; increase in the semicircle radius indicates a decrease of relaxation time. This observation is accompanied by enhancement in ionic conductivity and faster ion transport. A convincing, logical scheme to justify the experimental data has been proposed.
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Affiliation(s)
- Anil Arya
- Centre for Physical Sciences, Central University of Punjab, Bathinda-151001, Punjab, India
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Fuentes I, Andrio A, García-Bernabé A, Escorihuela J, Viñas C, Teixidor F, Compañ V. Structural and dielectric properties of cobaltacarborane composite polybenzimidazole membranes as solid polymer electrolytes at high temperature. Phys Chem Chem Phys 2018; 20:10173-10184. [PMID: 29594295 DOI: 10.1039/c8cp00372f] [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 conductivity of a series of composite membranes, based on polybenzimidazole (PBI) containing the metallacarborane salt M[Co(C2B9H11)2], M[COSANE] and tetraphenylborate, M[B(C6H5)4], M[TPB] both anions having the same number of atoms and the same negative charge, has been investigated. Different cations (M = H+, Li+ and Na+) have been studied and the composite membranes have been characterized by water uptake, swelling ratios, ATR FT-IR, thermogravimetric analysis and electrochemical impedance spectroscopy to explore the dielectric response and ion dynamics in composite membranes. Our results show that conductivity increases with increasing temperature and it is higher for H+ than for Li+ and Na+ for all temperatures under study. The mobility of Li+ is greater in [COSANE]- than in [TPB]- composite PBI@membranes while for Na+ it is the opposite. The temperature dependence of the conductivity of the composite was followed by a typical Arrhenius behaviour with two different regions: (1) between 20 and 100 °C, and (2) between 100 and 150 °C. Using the analysis of electrode polarization (EP) based on the Thrukhan theory we have calculated the ionic diffusion coefficients and the density of carriers. From the double logarithmic plot of the imaginary part of the conductivity (σ'') versus frequency in the entire range of temperatures studied we have determined for each sample at each temperature, the frequency values of the onset (fON) and full development of electrode polarization (fMAX), respectively, which permit us to calculate static permittivity.
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Affiliation(s)
- Isabel Fuentes
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
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Hamisu A, Çelik SÜ. Poly(AN-co-PEGMA)/hBN/NaClO4 composite electrolytes for sodium ion battery. E-POLYMERS 2017. [DOI: 10.1515/epoly-2017-0022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AbstractPolymer electrolytes composed of an acrylonitrile and polyethylene glycol methacrylate copolymer poly(AN-co-PEGMA) with addition of NaClO4 are studied by impedance spectroscopy, differential scanning calorimetry (DSC), fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). Hexagonal boron nitride (hBN) particles are having increasing interest owing to mechanical properties, thermal stability, chemical stability and good lubrication property. In this study, hBN was used as an inorganic filler. FTIR spectroscopy was used to examine the interactions between the host polymer and both NaClO4 salt and nano hBN particles. The thermal properties of the composites were studied using TGA and DSC tests. TGA results showed that all the composites membranes were thermally stable till 300°C with one step degradation. Surface morphology of the films was examined with SEM which also reveals the homogeneous dispersion of nano hBN in the polymer matrix. Ionic conductivity was studied with impedance spectroscopy, the results showed that the ionic conductivity increases with increasing PEGMA ratio. ANcoPEGMA 11 20Na (EO:Na ratio=20) sample showed maximum ion conductivity of approximately 3.6×10−4 S cm−1 at 100°C. This is because ANcoPEGMA 11 20Na has highest percentage of PEGMA and highest number of Na+ ion per EO groups.
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Affiliation(s)
- Abubakar Hamisu
- Department of Chemistry, Kano University of Science and Technology Wudil-Kano, Kano, Nigeria, Tel.: +2348039352016, Fax: +2348039352016
| | - Sevim Ü. Çelik
- Department of Chemistry, Fatih University, 34500 B.Çekmece-İstanbul, Turkey
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