Well-defined fluoro- and carbazole-containing diblock copolymers: synthesis, characterization and immobilization onto Au-coated silicon surfaces
| Autor: | Savva, Ioanna, Demetriou, Maria, Othonos, Andreas S., Turcu, R., Popa, A., Macavei, S., Krasia‐Christoforou, Theodora |
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| Přispěvatelé: | Othonos, Andreas S. [0000-0003-0016-9116], Krasia-Christoforou, T. [0000-0002-9915-491X] |
| Rok vydání: | 2012 |
| Předmět: |
Silicon
Chemical compositions Thermogravimetric analysis Materials science Polymers Decomposition temperature General Chemical Engineering Methacrylate Molecular weight Molecular weight distribution Nuclear magnetic resonance Gravimetric analysis Differential scanning calorimetry Reversible addition-fragmentation chain transfer polymerization Size exclusion chromatography Thermal gravimetric analyses (TGA) Polymer chemistry Copolymer Fourier transform infrared spectroscopy Nuclear magnetic resonance spectroscopy chemistry.chemical_classification Chromatography Gas sensing technologies Free radical polymerization Organic polymers Copolymers Ethyl methacrylates Proton nuclear magnetic resonance Photoluminescence measurements Chains Chain transfer General Chemistry Polymer Block copolymers Polycyclic aromatic hydrocarbons Polymerization Chemical engineering chemistry Glass transition Plastic coatings |
| Zdroj: | RSC Advances RSC Adv. |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c2ra20650a |
| Popis: | A series of well-defined diblock copolymers consisting of 2-(N-carbazolyl)ethyl methacrylate (CbzEMA) and 2,2,3,3,4,4,4-heptafluorobutyl methacrylate (HFBMA) (CbzEMAx-b-HFBMAy) was synthesized by Reversible Addition-Fragmentation chain Transfer (RAFT) polymerization. All polymers were characterized in terms of molecular weights, molecular weight distributions and chemical compositions using Size Exclusion Chromatography (SEC), Fourier Transform Infrared (FTIR) spectroscopy and Proton Nuclear Magnetic Resonance (1H NMR) spectroscopy, respectively. The thermal properties (glass transition and decomposition temperatures) of the CbzEMAx and HFBMAx homopolymers and the CbzEMAx-b-HFBMAy diblock copolymers were determined by Differential Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA). As demonstrated by photoluminescence measurements, immobilization of the dithioester-ended functionalized CbzEMAx-b-HFBMAy chains onto Au-coated silicon surfaces has been accomplished via anchoring of the sulfur-containing end-groups onto the Au surfaces. The presence of the low-surface energy fluorinated block, combined with the electro-active carbazole-containing segment within CbzEMAx-b-HFBMAy diblock copolymers imparts to these immobilized thin layers useful properties towards their potential applicability in gas sensing technologies. © The Royal Society of Chemistry 2012. 2 23 8741 8751 Cited By :1 |
| Databáze: | OpenAIRE |
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