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Article: Novel Strategy for Constructing High Efficiency OLED Emitters with Excited State Quinone‐Conformation Induced Planarization Process
Title | Novel Strategy for Constructing High Efficiency OLED Emitters with Excited State Quinone‐Conformation Induced Planarization Process |
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Authors | |
Keywords | aggregation‐induced emission excited state quinone‐conformation induced planarization organic light‐emitting diodes planarized intramolecular charge transfer tetraphenylpyrazine |
Issue Date | 2019 |
Publisher | Wiley - VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2195-1071 |
Citation | Advanced Optical Materials, 2019, v. 7 n. 18, p. article no. 1900283 How to Cite? |
Abstract | In contrast to the common intramolecular charge transfer (ICT) emission, planarized intramolecular charge transfer (PLICT) based materials usually possess higher proportion radiative decay for their flat and rigid conformation in excited states. Herein, a strategy for designing PLICT‐based emitters by the excited state quinone‐conformation induced planarization is proposed. By virtue of RIR mechanism on TPP (tetraphenylpyrazinyl) unit, the newcomers named as TPP‐PPI (1‐phenyl‐2‐(4′‐(3,5,6‐triphenylpyrazin‐2‐yl)‐[1,1′‐biphenyl]‐4‐yl)‐1H‐phenanthro[9,10‐d] imidazole) and TPP‐PI (1‐phenyl‐2‐(4‐(3,5,6‐triphenylpyrazin‐2‐yl)phenyl)‐1H‐phenanthro[9,10‐d]imidazole) exhibit aggregation‐induced emission (AIE) characteristics. TPP‐PPI and TPP‐PI have obvious PLICT properties via series of spectral measurements. Employing theoretical calculation in ground and excited states in different solvents, their PLICT process is confirmed further, and TPP's contribution on PLICT formation becomes clear. In non‐doped organic light‐emitting diodes, these two emitters with AIE and PLICT characteristic exhibit good performance with external quantum efficiency (4.85% and 4.36%) as blue emitters. |
Persistent Identifier | http://hdl.handle.net/10722/286175 |
ISSN | 2023 Impact Factor: 8.0 2023 SCImago Journal Rankings: 2.216 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | NcWu, H | - |
dc.contributor.author | Pan, Y | - |
dc.contributor.author | Zeng, J | - |
dc.contributor.author | Du, L | - |
dc.contributor.author | Luo, W | - |
dc.contributor.author | Zhang, H | - |
dc.contributor.author | Xue, K | - |
dc.contributor.author | Chen, P | - |
dc.contributor.author | Phillips, DL | - |
dc.contributor.author | Wang, Z | - |
dc.contributor.author | Qin, A | - |
dc.contributor.author | Tang, B | - |
dc.date.accessioned | 2020-08-31T07:00:12Z | - |
dc.date.available | 2020-08-31T07:00:12Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Advanced Optical Materials, 2019, v. 7 n. 18, p. article no. 1900283 | - |
dc.identifier.issn | 2195-1071 | - |
dc.identifier.uri | http://hdl.handle.net/10722/286175 | - |
dc.description.abstract | In contrast to the common intramolecular charge transfer (ICT) emission, planarized intramolecular charge transfer (PLICT) based materials usually possess higher proportion radiative decay for their flat and rigid conformation in excited states. Herein, a strategy for designing PLICT‐based emitters by the excited state quinone‐conformation induced planarization is proposed. By virtue of RIR mechanism on TPP (tetraphenylpyrazinyl) unit, the newcomers named as TPP‐PPI (1‐phenyl‐2‐(4′‐(3,5,6‐triphenylpyrazin‐2‐yl)‐[1,1′‐biphenyl]‐4‐yl)‐1H‐phenanthro[9,10‐d] imidazole) and TPP‐PI (1‐phenyl‐2‐(4‐(3,5,6‐triphenylpyrazin‐2‐yl)phenyl)‐1H‐phenanthro[9,10‐d]imidazole) exhibit aggregation‐induced emission (AIE) characteristics. TPP‐PPI and TPP‐PI have obvious PLICT properties via series of spectral measurements. Employing theoretical calculation in ground and excited states in different solvents, their PLICT process is confirmed further, and TPP's contribution on PLICT formation becomes clear. In non‐doped organic light‐emitting diodes, these two emitters with AIE and PLICT characteristic exhibit good performance with external quantum efficiency (4.85% and 4.36%) as blue emitters. | - |
dc.language | eng | - |
dc.publisher | Wiley - VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2195-1071 | - |
dc.relation.ispartof | Advanced Optical Materials | - |
dc.rights | This is the peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. | - |
dc.subject | aggregation‐induced emission | - |
dc.subject | excited state quinone‐conformation induced planarization | - |
dc.subject | organic light‐emitting diodes | - |
dc.subject | planarized intramolecular charge transfer | - |
dc.subject | tetraphenylpyrazine | - |
dc.title | Novel Strategy for Constructing High Efficiency OLED Emitters with Excited State Quinone‐Conformation Induced Planarization Process | - |
dc.type | Article | - |
dc.identifier.email | Du, L: ailleen@hku.hk | - |
dc.identifier.email | Phillips, DL: phillips@hku.hk | - |
dc.identifier.authority | Phillips, DL=rp00770 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1002/adom.201900283 | - |
dc.identifier.scopus | eid_2-s2.0-85083535975 | - |
dc.identifier.hkuros | 313837 | - |
dc.identifier.volume | 7 | - |
dc.identifier.issue | 18 | - |
dc.identifier.spage | article no. 1900283 | - |
dc.identifier.epage | article no. 1900283 | - |
dc.identifier.isi | WOS:000487087400014 | - |
dc.publisher.place | Germany | - |
dc.identifier.issnl | 2195-1071 | - |