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DC Field | Value | Language |
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dc.citation.endPage | 5221 | - |
dc.citation.number | 16 | - |
dc.citation.startPage | 5213 | - |
dc.citation.title | MACROMOLECULES | - |
dc.citation.volume | 39 | - |
dc.contributor.author | Yang, Changduk | - |
dc.contributor.author | Scheiber, Horst | - |
dc.contributor.author | List, Emil J. W. | - |
dc.contributor.author | Jacob, Josemon | - |
dc.contributor.author | Muellen, Klaus | - |
dc.date.accessioned | 2023-12-22T09:44:03Z | - |
dc.date.available | 2023-12-22T09:44:03Z | - |
dc.date.created | 2014-09-29 | - |
dc.date.issued | 2006-08 | - |
dc.description.abstract | The synthesis of a series of soluble poly(2,7-phenanthrylene)s and poly(3,6-phenanthrylene)s is presented. Depending on the nature of the repeat units they constitute analogues of poly(p-phenylene) (PPP) and poly(p-phenylenevinylene) (PPV) and thus should give rise to different modes of extended π-conjugation. In the case of the 9,10-dialkyl-substituted poly(2,7-phenanthrylene) and poly(3,6-phenanthrylene), spectroscopic characterization suggests polymer aggregation in the solid state, which can be efficiently suppressed by the introduction of aryl substituents to result in a narrow blue emission. The 2,7- or 3,6-coupling of the phenanthrenes has a strong influence on the emission properties of the polymers. The PPP analogue shows less vibronic coupling in emission due to the rigid-rod nature of the polymer as compared to the PPV analogue. Moreover, the photoinduced absorption features of the 2,7-linked derivatives are similar to PPP-type polymers, whereas the 3,6-linked derivatives exhibit a behavior typically found in PPV-type polymers. In the solid state, the PPV analogues show a more pronounced red-shift of the emission, which is assigned to the solid-state packing of the polymers. The polymers display deep blue electroluminescence and good color stability when tested in a polymer light emitting device. The formation of long wavelength emission bands, typically attributed to keto defects, is not observed. Additionally, 2,7- and 3,6-linked tris(phenanthrylene)s are synthesized as model compounds and their optical properties discussed in comparison with their polymer analogues. | - |
dc.identifier.bibliographicCitation | MACROMOLECULES, v.39, no.16, pp.5213 - 5221 | - |
dc.identifier.doi | 10.1021/ma061007p | - |
dc.identifier.issn | 0024-9297 | - |
dc.identifier.scopusid | 2-s2.0-33748316560 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/6753 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=33748316560 | - |
dc.identifier.wosid | 000239400800011 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Poly(2,7-phenanthrylene)s and poly(3,6-phenanthrylene)s as polyphenylene and poly(phenylenevinylene) analogues | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
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