Effects of atert-butylphenylene substituent on the structure and optical, fluorescent and thermal properties of the poly(p-phenylenevinylene) derivatives
| Autor: | En-Chiuan Chang, Hsun-Tsing Lee, Hung-Te Chang, Mou-Yung Yeh |
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| Rok vydání: | 2007 |
| Předmět: |
Conductive polymer
chemistry.chemical_classification Thermogravimetric analysis Photoluminescence Materials science Condensation polymer Polymers and Plastics Substituent General Chemistry Polymer Electroluminescence chemistry.chemical_compound PEDOT:PSS chemistry Polymer chemistry Materials Chemistry Physical chemistry |
| Zdroj: | Polymer Engineering & Science. 47:1380-1387 |
| ISSN: | 1548-2634 0032-3888 |
| Popis: | Two soluble fluorescent polymers, poly(2-decyloxy-5-(4′-tert-butylphenyl)-1,4-phenylenevinylene) (DtBP-PPV) and poly(2-decyloxy-1,4-phenylenevinylene) (DO-PPV), were prepared by a method similar to the Gilch procedure. The DtBP-PPV and DO-PPV have a same chemical structure except for the conjugated tert-bytulphenyl substituents in the former. The polymers are characterized by using 1H NMR, FTIR, UV–vis, photoluminescence (PL), and electroluminescence (EL) spectroscopies and thermogravimetric analysis (TGA). The 1H NMR spectra show no tolane-bis-benzyl (TBB) structure defects in DtBP-PPV but some in DO-PPV. Both UV–vis absorption and PL emission peaks of the DtBP-PPV exhibit a red-shift phenomenon as compared with those of the DO-PPV. Moreover, with the DtBP-PPV and DO-PPV acting as light-emitting polymers separately, EL devices were fabricated with a sequential lamination of ITO/PEDOT/DtBP-PPV (or DO-PPV)/Ca/Ag. The DtBP-PPV-based device shows a lower turn-on voltage, a longer EL emission wavelength, and a higher brightness than the DO-PPV-based device. The maximum brightness of DtBP-PPV-based device is 57 cd/m2 at an applied voltage of 12 V. POLYM. ENG. SCI., 47:1380–1387, 2007. © 2007 Society of Plastics Engineers |
| Databáze: | OpenAIRE |
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