Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/95492
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Applied Biology and Chemical Technology | en_US |
dc.creator | Li, W | en_US |
dc.creator | Miao, T | en_US |
dc.creator | Wang, B | en_US |
dc.creator | Liu, J | en_US |
dc.creator | Lü, X | en_US |
dc.creator | Fu, G | en_US |
dc.creator | Feng, W | en_US |
dc.creator | Wong, WY | en_US |
dc.date.accessioned | 2022-09-19T02:22:15Z | - |
dc.date.available | 2022-09-19T02:22:15Z | - |
dc.identifier.issn | 2050-7526 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/95492 | - |
dc.language.iso | en | en_US |
dc.publisher | Royal Society of Chemistry | en_US |
dc.rights | This journal is © The Royal Society of Chemistry 2021 | en_US |
dc.rights | The following publication Li, W., Miao, T., Wang, B., Liu, J., Lü, X., Fu, G., ... & Wong, W. Y. (2021). C 1-Symmetric [Ir (C^ N 1)(C^ N 2)(N^ O)]-tris-heteroleptic Ir (iii)-complexes with a horizontal orientation for efficient near-infrared (NIR) polymer light-emitting diodes (PLEDs). Journal of Materials Chemistry C, 9(26), 8337-8344 is available at https://doi.org/10.1039/d1tc01977e. | en_US |
dc.title | C1-Symmetric [Ir(C^N1)(C^N2)(N^O)]-Tris-Heteroleptic Ir(III)-Complexes with a horizontal orientation for efficient near-infrared (NIR) polymer light-emitting diodes (PLEDs) | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 8337 | en_US |
dc.identifier.epage | 8344 | en_US |
dc.identifier.volume | 9 | en_US |
dc.identifier.issue | 26 | en_US |
dc.identifier.doi | 10.1039/d1tc01977e | en_US |
dcterms.abstract | Using conventionalfac-[Ir(C^N)3]-homoleptic or [Ir(C^N)2(L^X)]-bis-heteroleptic iridium(iii)-complexes with NIR-phosphorescence (NIR = near infrared) as dopants, the realization of reliable NIR-OLEDs/PLEDs (organic/polymer light-emitting diodes) with high performance remains a real challenge. In this study, taking Hqibt (1-(benzo[b]-thiophen-2-yl)-isoquinoline) as the HC^N1ligand, Hppy (phenyl-4-yl)pyridine) as the HC^N2ligand and Br-Hpic (5-Br-picolinic acid) or Hpic (picolinic acid) as the N^O-ancillary, two novelC1-symmetric [Ir(C^N1)(C^N2)(N^O)]-tris-heteroleptic iridium(iii)-complexes [Ir(iqbt)(ppy)(pic)] (1) and [Ir(iqbt)(ppy)(Br-pic)] (2) are molecularly designed, respectively, where large TDM (transition dipole moment) and strengthened3MLCT (metal-to-ligand charge transfer) effects are established to afford their good NIR-phosphorescent efficiency (ΦPL= 0.27 for1(λem= 698 nm); 0.21 for2(λem= 696 nm)). Moreover, in their doped EMLs (emitting layers), a preferentially horizontal orientation of the TDMs is promoted, due to which, theNIR-PLEDs-1-2exhibit an attractively high efficiency (ηmaxEQE= 3.1-4.7%;λem= 698 nm) as well as an almost negligible (<5%) efficiency roll-off. This finding means theC1-symmetric [Ir(C^N1)(C^N2)(N^O)]-tris-heteroleptic Ir(iii)-complexes show potential as low-cost, large-area and scalable NIR-PLEDs. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Journal of materials chemistry C, 14 July 2021, v. 9, no. 26, p. 8337-8344 | en_US |
dcterms.isPartOf | Journal of materials chemistry C | en_US |
dcterms.issued | 2021-07-14 | - |
dc.identifier.scopus | 2-s2.0-85109364411 | - |
dc.identifier.eissn | 2050-7534 | en_US |
dc.description.validate | 202209_bcww | en_US |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ABCT-0084 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | NSFC; State Key Laboratory of Structure Chemistry; Guangdong Basic and Applied Basic Research Foundation; Hong Kong Polytechnic University; Endowed Professorship in Energy from Ms Clarea Au | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 57988768 | - |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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Fu_C1-Symmetric_Horizontal_Orientation.pdf | Pre-Published version | 957.74 kB | Adobe PDF | View/Open |
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