A phosphorescent poly(dendrimer) with increased viscosity for solution-processed OLED devices
We describe a phosphorescent green solution-processable iridium(III) complex containing poly(dendrimer), where the polymer character enhances compatibility with ink-jet printing techniques while the dendritic structure improves solid-state performance. The poly(dendrimer) shows an increased viscosit...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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2010
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| _version_ | 1826260606198480896 |
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| author | Levell, J Gunning, J Burn, P Robertson, J Samuel, I |
| author_facet | Levell, J Gunning, J Burn, P Robertson, J Samuel, I |
| author_sort | Levell, J |
| collection | OXFORD |
| description | We describe a phosphorescent green solution-processable iridium(III) complex containing poly(dendrimer), where the polymer character enhances compatibility with ink-jet printing techniques while the dendritic structure improves solid-state performance. The poly(dendrimer) shows an increased viscosity in chlorobenzene solutions of 1.1 mPa s at 25 mg/ml concentration relative to a simple first generation dendrimer. The poly(dendrimer) has a photoluminescence quantum yield of 15% in a neat film which increases to 52%, accompanied by an increase in radiative rate, when the material is blended with 4,4′-bis(N-carbazolyl)-2,2′-biphenyl (CBP). Blending with poly(styrene) results in a slightly decreased efficiency of 13%, showing the importance of choosing compatible materials when blending the poly(dendrimer). Organic light emitting diodes were fabricated containing the poly(dendrimer) and these had a 5.1% external quantum efficiency. © 2010 Elsevier B.V. All rights reserved. |
| first_indexed | 2024-03-06T19:08:20Z |
| format | Journal article |
| id | oxford-uuid:15e8dce6-ca51-4cc7-beb3-22a7e4b05f6c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:08:20Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:15e8dce6-ca51-4cc7-beb3-22a7e4b05f6c2022-03-26T10:28:13ZA phosphorescent poly(dendrimer) with increased viscosity for solution-processed OLED devicesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:15e8dce6-ca51-4cc7-beb3-22a7e4b05f6cEnglishSymplectic Elements at Oxford2010Levell, JGunning, JBurn, PRobertson, JSamuel, IWe describe a phosphorescent green solution-processable iridium(III) complex containing poly(dendrimer), where the polymer character enhances compatibility with ink-jet printing techniques while the dendritic structure improves solid-state performance. The poly(dendrimer) shows an increased viscosity in chlorobenzene solutions of 1.1 mPa s at 25 mg/ml concentration relative to a simple first generation dendrimer. The poly(dendrimer) has a photoluminescence quantum yield of 15% in a neat film which increases to 52%, accompanied by an increase in radiative rate, when the material is blended with 4,4′-bis(N-carbazolyl)-2,2′-biphenyl (CBP). Blending with poly(styrene) results in a slightly decreased efficiency of 13%, showing the importance of choosing compatible materials when blending the poly(dendrimer). Organic light emitting diodes were fabricated containing the poly(dendrimer) and these had a 5.1% external quantum efficiency. © 2010 Elsevier B.V. All rights reserved. |
| spellingShingle | Levell, J Gunning, J Burn, P Robertson, J Samuel, I A phosphorescent poly(dendrimer) with increased viscosity for solution-processed OLED devices |
| title | A phosphorescent poly(dendrimer) with increased viscosity for solution-processed OLED devices |
| title_full | A phosphorescent poly(dendrimer) with increased viscosity for solution-processed OLED devices |
| title_fullStr | A phosphorescent poly(dendrimer) with increased viscosity for solution-processed OLED devices |
| title_full_unstemmed | A phosphorescent poly(dendrimer) with increased viscosity for solution-processed OLED devices |
| title_short | A phosphorescent poly(dendrimer) with increased viscosity for solution-processed OLED devices |
| title_sort | phosphorescent poly dendrimer with increased viscosity for solution processed oled devices |
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