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Article: Synthesis and light-emitting properties of difunctional dendritic distyrylstilbenes
Title | Synthesis and light-emitting properties of difunctional dendritic distyrylstilbenes |
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Authors | |
Issue Date | 2001 |
Publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/macromolecules |
Citation | Macromolecules, 2001, v. 34 n. 19, p. 6821-6830 How to Cite? |
Abstract | A novel series of poly(benzyl ether) type dendritic distyrylbenzenes beating various electron or hole affinitive moieties including 1,3,4-oxadiazole, cyano, and propoxy groups on the outer surface of the first- and second-generations dendritic wedges have been synthesized for blue-light emission. Both theoretical and optical studies show that incorporation of the surface functionalized dendritic wedges into the nonconjugated meta positions of a distyrylstilbene skeleton does not disrupt the coplanarity of the π-conjugated core. Excitation of the surface functionalized dendritic wedges leads to substantial energy transfer from the dendritic wedges to the emissive core (up to 59%). Importantly, all the dendritic distyrylstilbenes show very high fluorescence quantum yields (over 93%). Single-layer light-emitting diodes (LED) using dendritic distyrylstilbene (DSB) doped poly(N-vinylcarbazole) (PVK) film as an emissive layer with structure of (ITO/DSB:PVK/Al) have been fabricated and investigated. The emission wavelengths and spectral features are very similar among the solution emission, solid-state photoluminescence, and electroluminescence spectra. The device performance of the first-generation dendritic DSB doped single-layer LEDs is generally superior to that of the corresponding second-generation dendrimer based devices. In addition, the propoxy surface functionalized dendritic DSB devices consistently show the best device performance and relative stability among the others. |
Persistent Identifier | http://hdl.handle.net/10722/167705 |
ISSN | 2023 Impact Factor: 5.1 2023 SCImago Journal Rankings: 1.401 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Kwok, CC | en_US |
dc.contributor.author | Wong, MS | en_US |
dc.date.accessioned | 2012-10-08T03:10:15Z | - |
dc.date.available | 2012-10-08T03:10:15Z | - |
dc.date.issued | 2001 | en_US |
dc.identifier.citation | Macromolecules, 2001, v. 34 n. 19, p. 6821-6830 | en_US |
dc.identifier.issn | 0024-9297 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/167705 | - |
dc.description.abstract | A novel series of poly(benzyl ether) type dendritic distyrylbenzenes beating various electron or hole affinitive moieties including 1,3,4-oxadiazole, cyano, and propoxy groups on the outer surface of the first- and second-generations dendritic wedges have been synthesized for blue-light emission. Both theoretical and optical studies show that incorporation of the surface functionalized dendritic wedges into the nonconjugated meta positions of a distyrylstilbene skeleton does not disrupt the coplanarity of the π-conjugated core. Excitation of the surface functionalized dendritic wedges leads to substantial energy transfer from the dendritic wedges to the emissive core (up to 59%). Importantly, all the dendritic distyrylstilbenes show very high fluorescence quantum yields (over 93%). Single-layer light-emitting diodes (LED) using dendritic distyrylstilbene (DSB) doped poly(N-vinylcarbazole) (PVK) film as an emissive layer with structure of (ITO/DSB:PVK/Al) have been fabricated and investigated. The emission wavelengths and spectral features are very similar among the solution emission, solid-state photoluminescence, and electroluminescence spectra. The device performance of the first-generation dendritic DSB doped single-layer LEDs is generally superior to that of the corresponding second-generation dendrimer based devices. In addition, the propoxy surface functionalized dendritic DSB devices consistently show the best device performance and relative stability among the others. | en_US |
dc.language | eng | en_US |
dc.publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/macromolecules | en_US |
dc.relation.ispartof | Macromolecules | en_US |
dc.title | Synthesis and light-emitting properties of difunctional dendritic distyrylstilbenes | en_US |
dc.type | Article | en_US |
dc.identifier.email | Kwok, CC:garykwokcc@hku.hk | en_US |
dc.identifier.authority | Kwok, CC=rp00847 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1021/ma010749+ | en_US |
dc.identifier.scopus | eid_2-s2.0-0035845806 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0035845806&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 34 | en_US |
dc.identifier.issue | 19 | en_US |
dc.identifier.spage | 6821 | en_US |
dc.identifier.epage | 6830 | en_US |
dc.identifier.isi | WOS:000170853500046 | - |
dc.publisher.place | United States | en_US |
dc.identifier.scopusauthorid | Kwok, CC=7102029161 | en_US |
dc.identifier.scopusauthorid | Wong, MS=7403908037 | en_US |
dc.identifier.issnl | 0024-9297 | - |