Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives
In this work, we designed and synthesized four bipolar blue-emitting materials with carbazole, imidazole, and biphenyl as donor, acceptor, and p bridge, respectively. The twisted phenylimidazole acceptor leads to a wider band-gap and hence deeper blue emission than the conjugated phenanthrimidazole...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/9/2349 |
| _version_ | 1797535573253029888 |
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| author | Pengfei Yu Yin Xiao |
| author_facet | Pengfei Yu Yin Xiao |
| author_sort | Pengfei Yu |
| collection | DOAJ |
| description | In this work, we designed and synthesized four bipolar blue-emitting materials with carbazole, imidazole, and biphenyl as donor, acceptor, and p bridge, respectively. The twisted phenylimidazole acceptor leads to a wider band-gap and hence deeper blue emission than the conjugated phenanthrimidazole acceptor. For the substituents on the carbazole donor, the t-butyl group could prevent the intramolecular charge transfer (ICT) process more effectively than the methoxy group. A non-doped deep-blue organic light-emitting diodes (OLED) is obtained with CIE coordinates of (0.159, 0.080), a maximum luminance of 11,364 cd/m<sup>2</sup>, and a maximum EQE of 4.43%. |
| first_indexed | 2024-03-10T11:46:23Z |
| format | Article |
| id | doaj.art-8ea5540e367a45cead58eb1cfbcb03bb |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T11:46:23Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-8ea5540e367a45cead58eb1cfbcb03bb2023-11-21T18:01:54ZengMDPI AGMaterials1996-19442021-04-01149234910.3390/ma14092349Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole DerivativesPengfei Yu0Yin Xiao1School of Chemical Engineering and Technology, Tianjin Engineering Research Center of Functional Fine Chemicals, Tianjin University, Tianjin 300072, ChinaSchool of Chemical Engineering and Technology, Tianjin Engineering Research Center of Functional Fine Chemicals, Tianjin University, Tianjin 300072, ChinaIn this work, we designed and synthesized four bipolar blue-emitting materials with carbazole, imidazole, and biphenyl as donor, acceptor, and p bridge, respectively. The twisted phenylimidazole acceptor leads to a wider band-gap and hence deeper blue emission than the conjugated phenanthrimidazole acceptor. For the substituents on the carbazole donor, the t-butyl group could prevent the intramolecular charge transfer (ICT) process more effectively than the methoxy group. A non-doped deep-blue organic light-emitting diodes (OLED) is obtained with CIE coordinates of (0.159, 0.080), a maximum luminance of 11,364 cd/m<sup>2</sup>, and a maximum EQE of 4.43%.https://www.mdpi.com/1996-1944/14/9/2349OLEDdeep-blue emissioncarbazoleimidazole |
| spellingShingle | Pengfei Yu Yin Xiao Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives Materials OLED deep-blue emission carbazole imidazole |
| title | Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives |
| title_full | Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives |
| title_fullStr | Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives |
| title_full_unstemmed | Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives |
| title_short | Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives |
| title_sort | non doped deep blue oleds based on carbazole π imidazole derivatives |
| topic | OLED deep-blue emission carbazole imidazole |
| url | https://www.mdpi.com/1996-1944/14/9/2349 |
| work_keys_str_mv | AT pengfeiyu nondopeddeepblueoledsbasedoncarbazolepimidazolederivatives AT yinxiao nondopeddeepblueoledsbasedoncarbazolepimidazolederivatives |