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1,3-Dimethoxy-1,3-dimethyl-1,3-diphenyl- and 1,3-dimethoxy-1,3-tetraphenyldisiloxanes: synthesis and structure. Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2596-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nunes SC, de Zea Bermudez V. Structuring of Amide Cross-Linked Non-Bridged and Bridged Alkyl-Based Silsesquioxanes. CHEM REC 2018; 18:724-736. [DOI: 10.1002/tcr.201700096] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 01/16/2018] [Indexed: 02/04/2023]
Affiliation(s)
- S. C. Nunes
- CICS - Health Sciences Research Center and Chemistry Department; University of Beira Interior; Rua Marquês D'Ávila e Bolama 6201-001 Covilhã Portugal
| | - V. de Zea Bermudez
- Chemistry Department and CQ-VR; University of Trás-os-Montes e Alto Douro Quinta de Prados; 5000-801 Vila Real Portugal
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Pereira RFP, Nunes SC, Toquer G, Cardoso MA, Valente AJM, Ferro MC, Silva MM, Carlos LD, Ferreira RAS, de Zea Bermudez V. Novel Highly Luminescent Amine-Functionalized Bridged Silsesquioxanes. Front Chem 2018; 5:131. [PMID: 29379781 PMCID: PMC5775297 DOI: 10.3389/fchem.2017.00131] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 12/22/2017] [Indexed: 11/13/2022] Open
Abstract
Amine-functionalized bridged silsesquioxanes (BSs) were synthesized from bis[(3-trimethoxysilyl)propyl] amine via a solvent-mediated route. BS-1 and BS-2 were obtained at neutral pH with sub- and stoichiometric amounts of water, respectively, and high tetrahydrofuran content. BS-3 was prepared with hyperstoichiometric water concentration, high tetrahydrofuran content, and hydrochloric acid. BS-4 was synthesized with hyperstoichiometric water concentration, high ethanol content, and sodium hydroxide. BS-1 and BS-2 were produced as transparent films, whereas BS-3 and BS-4 formed white powders. Face-to-face stacking of flat or folded lamellae yielded quasi-hydrophobic platelets with emission quantum yields of 0.05 ± 0.01 (BS-1 and BS-2) or superhydrophilic onion-like nanoparticles with exciting emission quantum yields of 0.38 ± 0.03 (BS-3) and 0.33 ± 0.04 (BS-4), respectively. The latter two values are the largest ever reported for amine-functionalized siloxane-based hybrids lacking aromatic groups. Fast Grotthus proton hopping between = NH2+/ = NH groups (BS-3) and = N−/ = NH groups (BS-4), promoted by H+ and OH− ions, respectively, and aided by short amine-amine contacts provided by the onion-like morphology, account for this unique optical behavior.
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Affiliation(s)
| | - Sílvia C Nunes
- Chemistry Department and CICS - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Guillaume Toquer
- Institut de Chimie Séparative de Marcoule - UMR 5257, CEA, CNRS, ENSCM, Université de Montpellier, Marcoule, France
| | - Marita A Cardoso
- Chemistry Department and CQ-VR, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
| | | | - Marta C Ferro
- Materials and Engineering Department and CICECO - Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Maria M Silva
- Chemistry Center, University of Minho, Braga, Portugal
| | - Luís D Carlos
- Department of Physics, CICECO - Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Rute A S Ferreira
- Department of Physics, CICECO - Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
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Nunes SC, Toquer G, Cardoso MA, Mayoral A, Ferreira RAS, Carlos LD, Ferreira P, Almeida P, Cattoën X, Wong Chi Man M, de Zea Bermudez V. Structuring of Alkyl-Triazole Bridged Silsesquioxanes. ChemistrySelect 2017. [DOI: 10.1002/slct.201601806] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- S. C. Nunes
- CICS - Health Sciences Research Center and Chemistry Department; University of Beira Interior; 6201-001 Covilhã Portugal
- Department Chemistry; University of Trás-os-Montes e Alto Douro; 5000-801 Vila Real Portugal
| | - G. Toquer
- Institut de Chimie Séparative de Marcoule; (UMR 5257 CEA-CNRS-UM2-ENSCM), BP17171; 30207 Bagnols sur Cèze France
| | - M. A. Cardoso
- Department Chemistry; University of Trás-os-Montes e Alto Douro; 5000-801 Vila Real Portugal
- Department of Physics, CICECO - Aveiro Institute of Materials; University of Aveiro; 3810-193 Aveiro Portugal
| | - A. Mayoral
- Laboratorio de Microscopias Avanzadas; Instituto de Nanociencia de Aragon; Universidad de Zaragoza; 50018 Zaragoza Spain
| | - R. A. S. Ferreira
- Department of Physics, CICECO - Aveiro Institute of Materials; University of Aveiro; 3810-193 Aveiro Portugal
| | - L. D. Carlos
- Department of Physics, CICECO - Aveiro Institute of Materials; University of Aveiro; 3810-193 Aveiro Portugal
| | - P. Ferreira
- Department of Materials and Ceramic Engineering; CICECO - Aveiro Institute of Materials; University of Aveiro; 3810-193 Aveiro Portugal
| | - P. Almeida
- CICS - Health Sciences Research Center and Chemistry Department; University of Beira Interior; 6201-001 Covilhã Portugal
| | - X. Cattoën
- Inst NEEL; Univ. Grenoble Alpes, Inst NEEL F-; 38042 Grenoble, F38042 Grenoble France
| | - M. Wong Chi Man
- Institut Charles Gerhardt Montpellier; UMR5253 CNRS-ENSCM-UM; 8, rue de l'école normale 34296 Montpellier France
| | - V. de Zea Bermudez
- Department Chemistry; University of Trás-os-Montes e Alto Douro; 5000-801 Vila Real Portugal
- CQ-VR, University of Trás-os-Montes e Alto Douro; 5000-801 Vila Real Portugal
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Ni L, Chemtob A, Croutxé-Barghorn C, Dietlin C, Brendlé J, Rigolet S, Vidal L, Dieterlen A, Maalouf E, Haeberlé O. Photoinduced self-assembly of carboxylic acid-terminated lamellar silsesquioxane: highly functional films for attaching and patterning amino-based ligands. RSC Adv 2015. [DOI: 10.1039/c5ra04300j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
A facile procedure for immobilizing and photopatterning amino ligands onto a multilayer cross-linked COOH-functionalized organosilica film is described. Key features include high functionality, robustness and no restriction on the substrate.
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Nunes SC, Ferreira CB, Ferreira RAS, Carlos LD, Ferro MC, Mano JF, Almeida P, de Zea Bermudez V. Fractality and metastability of a complex amide cross-linked dipodal alkyl/siloxane hybrid. RSC Adv 2014. [DOI: 10.1039/c4ra11300d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Nunes SC, Bürglová K, Hodačová J, Ferreira RAS, Carlos LD, Almeida P, Cattoën X, Wong Chi Man M, de Zea Bermudez V. Nanostructuring of Bridged Organosilane Precursors with Pendant Alkyl Chains. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402673] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Chemtob A, Ni L, Croutxé-Barghorn C, Boury B. Ordered hybrids from template-free organosilane self-assembly. Chemistry 2014; 20:1790-806. [PMID: 24449381 DOI: 10.1002/chem.201303070] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Despite considerable achievements over the last two decades, nonporous organic-inorganic hybrid materials are mostly amorphous, especially in the absence of solvothermal processes. The organosilane self-assembly approach is one of the few opportunities for creating a regular assembly of organic and inorganic moieties. Additionally, well-established organosilicon chemistry enables the introduction of numerous organic functionalities. The synthesis of periodically ordered hybrids relies on mono-, bis-, or multisilylated organosilane building blocks self-assembling into hybrid mesostructures or superstructures, subsequently cross-linked by siloxane Si-O-Si condensation. The general synthesis procedure is template-free and one-step. However, three concurrent processes underlie the generation of self-organized hybrid networks: thermodynamics of amphiphilic aggregation, dynamic self-assembly, and kinetically controlled sol-gel chemistry. Hence, the set of experimental conditions and the precursor structure are of paramount importance in achieving long-range order. Since the first developments in the mid-1990s, the subject has seen considerable progress leading to many innovative advanced nanomaterials providing promising applications in membranes, pollutant remediation, catalysis, conductive coatings, and optoelectronics. This work reviews, comprehensively, the primary evolution of this expanding field of research.
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Affiliation(s)
- Abraham Chemtob
- Laboratory of Photochemistry and Macromolecular Engineering, ENSCMu, University of Haute-Alsace, 3 rue Alfred Werner 68093 Mulhouse Cedex (France), Fax: (+33) 389335014.
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Nunes SC, Ferreira RAS, Carlos LD, Almeida P, de Zea Bermudez V. Lamellar Salt-Doped Hybrids with Two Reversible Order/Disorder Phase Transitions. J Phys Chem B 2013; 117:14529-43. [DOI: 10.1021/jp407366c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sílvia C. Nunes
- Chemistry
Department and CICS - Centro de Investigação em Ciências
da Saúde, University of Beira Interior, 6200-001 Covilhã, Portugal
- Chemistry
Department, University of Trás-os-Montes and Alto Douro, 5001-801 Vila Real, Portugal
| | - Rute A. S. Ferreira
- Physics
Department and CICECO, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Luís D. Carlos
- Physics
Department and CICECO, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Paulo Almeida
- Chemistry
Department and CICS - Centro de Investigação em Ciências
da Saúde, University of Beira Interior, 6200-001 Covilhã, Portugal
| | - Verónica de Zea Bermudez
- Chemistry
Department, University of Trás-os-Montes and Alto Douro, 5001-801 Vila Real, Portugal
- CQ-VR, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal
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Pereira RFP, Valente AJM, Burrows HD, de Zea Bermudez V, Carvalho RA, Castro RAE. Structural characterization of solid trivalent metal dodecyl sulfates: from aqueous solution to lamellar superstructures. RSC Adv 2013. [DOI: 10.1039/c2ra21906a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Freitas VT, Lima PP, de Zea Bermudez V, Ferreira RAS, Carlos LD. Boosting the Emission Quantum Yield of Urea Cross-Linked Tripodal Poly(oxypropylene)/Siloxane Hybrids Through the Variation of Catalyst Concentration. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200823] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Pletsch D, da Silveira Santos F, Rodembusch FS, Stefani V, Campo LF. Bis-silylated terephthalate as a building block precursor for highly fluorescent organic–inorganic hybrid materials. NEW J CHEM 2012. [DOI: 10.1039/c2nj40434f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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