Silica–Conjugated Polymer Hybrid Fluorescent Nanoparticles: Preparation by Surface-Initiated Polymerization and Spectroscopic Studies
| Autor: | Chun-Han Wang, Sang Gil Youm, Evgueni E. Nesterov, Yaroslav Losovyj, Tony E. Karam, Cornelia Rosu, Louis H. Haber, Xin Li, Changwoo Do, Paul S. Russo, Sourav Chatterjee |
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| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Materials science 02 engineering and technology Polymer Conjugated system 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis Nanomaterials General Energy Chemical engineering chemistry Polymerization Covalent bond Copolymer Physical and Theoretical Chemistry 0210 nano-technology Hybrid material |
| Zdroj: | The Journal of Physical Chemistry C. 122:6963-6975 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.8b00313 |
| Popis: | Organic/inorganic hybrid nanoscale materials possess fascinating optical, electronic, magnetic, and catalytic properties that are promising for a variety of practical applications. Such properties can be dramatically affected by the hierarchical structure and molecular organization in the nanomaterials. Herein, we employed surface-initiated Kumada catalyst-transfer polymerization to prepare hybrid materials consisting of shells of conjugated polymers (CPs)—polythiophene or poly(p-phenylene)—and their block copolymers covalently attached to the surface of silica nanoparticles. Because of the controlled chain-growth mechanism of surface-initiated polymerization, we obtained structurally well-defined CP blocks in the diblock copolymer shells, which produced distinct spectroscopic properties related to the intraparticle excitation energy transfer between the nanoscale polymer shell components, as well as the formation of interfacial exciplex states. The spectroscopic phenomena were further understood via time... |
| Databáze: | OpenAIRE |
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