Synthesis and characterization of functional photoactive organic-inorganic block copolymers of poly(methylphenylsilane) and disperse red 1 methacrylate and study of their optical and photophysical properties
| Autor: | Km. Meenu, Dibyendu S. Bag |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Photoluminescence Materials science Polymers and Plastics 02 engineering and technology General Chemistry Polymer Chromophore 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry Methacrylate 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Azobenzene Polymer chemistry Materials Chemistry Ceramics and Composites Copolymer Fourier transform infrared spectroscopy 0210 nano-technology Glass transition |
| Zdroj: | Journal of Macromolecular Science, Part A. 54:418-425 |
| ISSN: | 1520-5738 1060-1325 |
| Popis: | Functional photoactive organic-inorganic block copolymers of poly(methylphenylsilane) (PMPS) and disperse red 1 methacrylate (DR1MA) were synthesized in a quartz tube using UV-technique. The synthesized block copolymers were characterized by FTIR, NMR, GPC and thermal analyses and studied for their optical and photoluminescence properties. The weight average and number average molecular weights of such a synthesized block copolymer are 2.47 × 103 and 2.27 × 103, respectively. The appearance of two glass transition temperatures indicated the synthesized polymers as block copolymers. The functional organic-inorganic block copolymers exhibited optical absorbance at 276 nm due to aromatic ring associated with both the blocks and at 325 nm due to σ-electron delocalization of Si-Si chain of PMPS block. Also, the optical absorbance appeared at 472 nm is due to combining the contribution of n-π* and first π-π* charge transfer electronic transition of the azobenzene chromophore of DR1MA unit. Two photoemis... |
| Databáze: | OpenAIRE |
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