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Abdelgawwad AMA, Xavier JAM, Roca-Sanjuán D, Viñas C, Teixidor F, Francés-Monerris A. Light-Induced On/Off Switching of the Surfactant Character of the o-Cobaltabis(dicarbollide) Anion with No Covalent Bond Alteration. Angew Chem Int Ed Engl 2021; 60:25753-25757. [PMID: 34562322 PMCID: PMC9297989 DOI: 10.1002/anie.202111493] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/22/2021] [Indexed: 12/22/2022]
Abstract
Cobaltabis(dicarbollide) anion ([o‐COSAN]−) is a well‐known metallacarborane with multiple applications in a variety of fields. In aqueous solution, the cisoid rotamer is the most stable disposition in the ground state. The present work provides theoretical evidence on the possibility to photoinduce the rotation from the cisoid to the transoid rotamer, a conversion that can be reverted when the ground state is repopulated. The non‐radiative decay mechanisms proposed in this work are coherent with the lack of fluorescence observed in 3D fluorescence mapping experiments performed on [o‐COSAN]− and its derivatives. This phenomenon induced by light has the potential to destruct the vesicles and micelles cisoid [o‐COSAN]− typically forms in aqueous solution, which could lead to promising applications, particularly in the field of nanomedicine.
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Affiliation(s)
| | - Jewel Ann Maria Xavier
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193, Bellaterra, Spain
| | - Daniel Roca-Sanjuán
- Institut de Ciència Molecular, Universitat de València, 46071, València, Spain
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193, Bellaterra, Spain
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193, Bellaterra, Spain
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Abdelgawwad AMA, Xavier JAM, Roca‐Sanjuán D, Viñas C, Teixidor F, Francés‐Monerris A. Light‐Induced On/Off Switching of the Surfactant Character of the
o
‐Cobaltabis(dicarbollide) Anion with No Covalent Bond Alteration. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111493] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Jewel Ann Maria Xavier
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC Campus UAB 08193 Bellaterra Spain
| | | | - Clara Viñas
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC Campus UAB 08193 Bellaterra Spain
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC Campus UAB 08193 Bellaterra Spain
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Far‐Red and Near‐Infrared Boron Schiff Bases (BOSCHIBAs) Dyes Bearing Anionic Boron Clusters. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100144] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Merhi T, Jonchère A, Girard L, Diat O, Nuez M, Viñas C, Bauduin P. Highlights on the Binding of Cobalta-Bis-(Dicarbollide) with Glucose Units. Chemistry 2020; 26:13935-13947. [PMID: 32628301 DOI: 10.1002/chem.202002123] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/18/2020] [Indexed: 12/13/2022]
Abstract
Metalla-bis-dicarbollides, such as the cobalta-bis-dicarbollide (COSAN) anion [Co(C2 B9 H11 )2 ]- , have attracted much attention in biology but a deep understanding of their interactions with cell components is still missing. For this purpose, we studied the interactions of COSAN with the glucose moiety, which is ubiquitous at biological interfaces. Octyl-glucopyranoside surfactant (C8G1) was chosen as a model as it self-assembles in water and creates a hydrated glucose-covered interface. At low COSAN content and below the critical micellar concentration (CMC) of C8G1, COSAN binds to C8G1 monomers through the hydrophobic effect. Above the CMC of C8G1, COSAN adsorbs onto C8G1 micelles through the superchaotropic effect. At high COSAN concentrations, COSAN disrupts C8G1 micelles and the assemblies become similar to COSAN micelles but with a small amount of solubilized C8G1. Therefore, COSAN binds in a versatile way to C8G1 through either the hydrophobic or superchaotropic effect depending on their relative concentrations.
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Affiliation(s)
- Tania Merhi
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, 30207, Marcoule, France
| | - Alban Jonchère
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, 30207, Marcoule, France
| | - Luc Girard
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, 30207, Marcoule, France
| | - Olivier Diat
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, 30207, Marcoule, France
| | - Miquel Nuez
- Institute de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Barcelona, Spain
| | - Clara Viñas
- Institute de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Barcelona, Spain
| | - Pierre Bauduin
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, 30207, Marcoule, France
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Druzina AA, Kosenko ID, Zhidkova OB, Ananyev IV, Timofeev SV, Bregadze VI. Novel Cobalt Bis(dicarbollide) Based on Terminal Alkynes and Their Click‐Reactions. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000388] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Anna A. Druzina
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Str. 28 119991 Moscow Russia
| | - Irina D. Kosenko
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Str. 28 119991 Moscow Russia
| | - Olga B. Zhidkova
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Str. 28 119991 Moscow Russia
| | - Ivan V. Ananyev
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Str. 28 119991 Moscow Russia
- National Research University Higher School of Economics Myasnitskaya Str. 20 101000 Moscow Russia
| | - Sergey V. Timofeev
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Str. 28 119991 Moscow Russia
| | - Vladimir I. Bregadze
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Str. 28 119991 Moscow Russia
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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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Hohenschutz M, Grillo I, Diat O, Bauduin P. How Nano-Ions Act Like Ionic Surfactants. Angew Chem Int Ed Engl 2020; 59:8084-8088. [PMID: 32125752 DOI: 10.1002/anie.201916193] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/24/2020] [Indexed: 12/20/2022]
Abstract
Recently, nanometric ions were shown to adsorb to hydrated neutral surfaces and to bind to the cavities of macrocyclic molecules with an unexpectedly strong affinity arising from a solvent-mediated effect named superchaotropicity. We show here that nano-ions at low concentrations (μm range), similarly to anionic surfactants, induce the spontaneous transformation of a swollen lyotropic lamellar phase of non-ionic surfactant into a vesicle phase. This transition occurs when the neutral lamellae acquire charges, either by adsorption of the nano-ions onto, or by anchoring of the ionic surfactant into the lamellae. In contrast to ionic surfactants, nano-ions strongly dehydrate the neutral surfactant assemblies. As a conclusion, these purely inorganic nanometric ions act as alternatives to the widely used organic ionic surfactants.
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Affiliation(s)
| | - Isabelle Grillo
- Institut Laue-Langevin (ILL), 71 Avenue des Martyrs, 38000, Grenoble, France
| | - Olivier Diat
- ICSM, CEA, CNRS, ENSCM, Univ Montpellier, Marcoule, France
| | - Pierre Bauduin
- ICSM, CEA, CNRS, ENSCM, Univ Montpellier, Marcoule, France
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Hohenschutz M, Grillo I, Diat O, Bauduin P. How Nano‐Ions Act Like Ionic Surfactants. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916193] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | - Isabelle Grillo
- Institut Laue-Langevin (ILL) 71 Avenue des Martyrs 38000 Grenoble France
| | - Olivier Diat
- ICSMCEACNRSENSCMUniv Montpellier Marcoule France
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