A new polymer containing confined phenylenevinylene segments: synthesis and photoluminescence
| Autor: | Y.B. Hahn, Kee Suk Nahm, Chun-Hee Cho, Youn-Sik Lee, Soo-Chang Yu |
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| Rok vydání: | 2000 |
| Předmět: |
chemistry.chemical_classification
Photoluminescence Materials science Mechanical Engineering Metals and Alloys Polymer Condensed Matter Physics Acceptor Electronic Optical and Magnetic Materials Crystallography chemistry.chemical_compound chemistry Mechanics of Materials Excited state Polymer chemistry Materials Chemistry Thermal stability Polymer blend Ground state Polyurethane |
| Zdroj: | Synthetic Metals. 114:331-335 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/s0379-6779(00)00267-8 |
| Popis: | Poly[bis(4,6-di- tert -butyl-1,2-phenylene-1,2-ethenylene)-1,4-phenylene-4,4′-ethylenebis(11-oxyundecanylphenyl urethane)] (PV-PU) consisting of alternating a confined phenylenevinylene segment and a nonconjugated urethane segment in the main chain was synthesized. Photoluminescence (PL) of PV-PU is emitted in the blue region with a maximum intensity at about 440 nm. PV-PU blended with 2-(4-biphenylyl)-5-(4- tert -butylphenyl)-1,3,4-oxadiazole (PBD)–polystyrene (1:2, wt/wt) in weight ratio of 1:10 and 1:15 also show PL spectra similar to that of pure PV-PU but with enhanced intensity, suggesting that the photo-excited PBD donor transfers its energy to PV-PU in the ground state and subsequently the excited PV-PU acceptor emits the blue light. |
| Databáze: | OpenAIRE |
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