Tunable gas sensing gels by cooperative assembly
| Autor: | Abid Hussain, Bárbara F. Medrado, Madalena Dionísio, Ana Teresa Silva Semeano, Hugo Gamboa, Jonas Gruber, Ana Carolina Pádua, Ana C. A. Roque, Ana Luísa Carvalho, José Roberto Fogaça de Almeida, Rein V. Ulijn, Rosamaria Wu Chia Li, Ana Sofia Pina, Susana I. C. J. Palma |
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| Přispěvatelé: | DQ - Departamento de Química, UCIBIO - Applied Molecular Biosciences Unit, LAQV@REQUIMTE, DF – Departamento de Física, LIBPhys-UNL |
| Rok vydání: | 2017 |
| Předmět: |
gas sensing
Fabrication food.ingredient Materials science genetic structures Supramolecular chemistry Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Gelatin Article gelatin ionic liquids Biomaterials chemistry.chemical_compound food liquid crystals Liquid crystal Electrochemistry self-assembly 021001 nanoscience & nanotechnology Condensed Matter Physics Small molecule 0104 chemical sciences Characterization (materials science) Electronic Optical and Magnetic Materials CRISTAIS LÍQUIDOS chemistry Ionic liquid Self-assembly 0210 nano-technology |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP Advanced Functional Materials |
| Popis: | European Research Council - SCENT-ERC-2014-STG-639123 POCI-01-0145-FEDER-007728 The cooperative assembly of biopolymers and small molecules can yield functional materials with precisely tunable properties. Here, the fabrication, characterization, and use of multicomponent hybrid gels as selective gas sensors are reported. The gels are composed of liquid crystal droplets self-assembled in the presence of ionic liquids, which further coassemble with biopolymers to form stable matrices. Each individual component can be varied and acts cooperatively to tune gels' structure and function. The unique molecular environment in hybrid gels is explored for supramolecular recognition of volatile compounds. Gels with distinct compositions are used as optical and electrical gas sensors, yielding a combinatorial response conceptually mimicking olfactory biological systems, and tested to distinguish volatile organic compounds and to quantify ethanol in automotive fuel. The gel response is rapid, reversible, and reproducible. These robust, versatile, modular, pliant electro-optical soft materials possess new possibilities in sensing triggered by chemical and physical stimuli. publishersversion published |
| Databáze: | OpenAIRE |
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