Asymmetric
The development of blue phosphorescent iridium(III) complexes has been a formidable challenge in the field of organic light-emitting diodes (OLEDs). Unlike the conventional blue Ir-complex structure of symmetric tri-/bis-cyclometalated coordination geometry, we herein report a new configuration of [...
Ausführliche Beschreibung
Autor*in: |
Lu, Guangzhao [verfasserIn] Li, Shuaibing [verfasserIn] Long, Yangke [verfasserIn] Li, Yang [verfasserIn] Zhou, Changjiang [verfasserIn] Wang, Xinzhong [verfasserIn] Zhou, Liang [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2023 |
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Schlagwörter: |
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Übergeordnetes Werk: |
Enthalten in: Dyes and pigments - Amsterdam [u.a.] : Elsevier Science, 1980, 220 |
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Übergeordnetes Werk: |
volume:220 |
DOI / URN: |
10.1016/j.dyepig.2023.111713 |
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Katalog-ID: |
ELV065380037 |
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520 | |a The development of blue phosphorescent iridium(III) complexes has been a formidable challenge in the field of organic light-emitting diodes (OLEDs). Unlike the conventional blue Ir-complex structure of symmetric tri-/bis-cyclometalated coordination geometry, we herein report a new configuration of [Ir(C1^N1)(C2^N2)(LX)]-tris-heteroleptic Ir(III) complex, where C1^N1 and C2^N2 denote two different main ligands, and LX stands for a third ancillary ligand. By the new configuration, two asymmetric blue iridium complexes, namely dfbpy-Ir-dfppy and dfppy-Ir-dfbpy, were designed and synthesized, displaying the highly desirable blue emission peaks at 450 nm and 452 nm, respectively. Based on the two new emitters, the blue OLEDs exhibited good performances with the maximum external quantum efficiency (EQEmax) reaching 8.5% and CIE(x, y) coordinates of (0.21, 0.31). This study provides a new strategy for efficient blue iridium complexes through reasonably engineering the asymmetric tris-heteroleptic Ir-complex configuration. | ||
650 | 4 | |a Organic light-emitting diode | |
650 | 4 | |a Phosphorescence | |
650 | 4 | |a Blue iridium | |
650 | 4 | |a Configuration | |
700 | 1 | |a Li, Shuaibing |e verfasserin |4 aut | |
700 | 1 | |a Long, Yangke |e verfasserin |4 aut | |
700 | 1 | |a Li, Yang |e verfasserin |4 aut | |
700 | 1 | |a Zhou, Changjiang |e verfasserin |0 (orcid)0000-0001-8185-4320 |4 aut | |
700 | 1 | |a Wang, Xinzhong |e verfasserin |4 aut | |
700 | 1 | |a Zhou, Liang |e verfasserin |4 aut | |
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allfields |
10.1016/j.dyepig.2023.111713 doi (DE-627)ELV065380037 (ELSEVIER)S0143-7208(23)00639-3 DE-627 ger DE-627 rda eng 660 VZ 58.26 bkl Lu, Guangzhao verfasserin (orcid)0009-0005-7362-533X aut Asymmetric 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The development of blue phosphorescent iridium(III) complexes has been a formidable challenge in the field of organic light-emitting diodes (OLEDs). Unlike the conventional blue Ir-complex structure of symmetric tri-/bis-cyclometalated coordination geometry, we herein report a new configuration of [Ir(C1^N1)(C2^N2)(LX)]-tris-heteroleptic Ir(III) complex, where C1^N1 and C2^N2 denote two different main ligands, and LX stands for a third ancillary ligand. By the new configuration, two asymmetric blue iridium complexes, namely dfbpy-Ir-dfppy and dfppy-Ir-dfbpy, were designed and synthesized, displaying the highly desirable blue emission peaks at 450 nm and 452 nm, respectively. Based on the two new emitters, the blue OLEDs exhibited good performances with the maximum external quantum efficiency (EQEmax) reaching 8.5% and CIE(x, y) coordinates of (0.21, 0.31). This study provides a new strategy for efficient blue iridium complexes through reasonably engineering the asymmetric tris-heteroleptic Ir-complex configuration. Organic light-emitting diode Phosphorescence Blue iridium Configuration Li, Shuaibing verfasserin aut Long, Yangke verfasserin aut Li, Yang verfasserin aut Zhou, Changjiang verfasserin (orcid)0000-0001-8185-4320 aut Wang, Xinzhong verfasserin aut Zhou, Liang verfasserin aut Enthalten in Dyes and pigments Amsterdam [u.a.] : Elsevier Science, 1980 220 Online-Ressource (DE-627)306658755 (DE-600)1500382-6 (DE-576)116550910 0143-7208 nnns volume:220 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 58.26 Technologie der Farben und Lacke VZ AR 220 |
spelling |
10.1016/j.dyepig.2023.111713 doi (DE-627)ELV065380037 (ELSEVIER)S0143-7208(23)00639-3 DE-627 ger DE-627 rda eng 660 VZ 58.26 bkl Lu, Guangzhao verfasserin (orcid)0009-0005-7362-533X aut Asymmetric 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The development of blue phosphorescent iridium(III) complexes has been a formidable challenge in the field of organic light-emitting diodes (OLEDs). Unlike the conventional blue Ir-complex structure of symmetric tri-/bis-cyclometalated coordination geometry, we herein report a new configuration of [Ir(C1^N1)(C2^N2)(LX)]-tris-heteroleptic Ir(III) complex, where C1^N1 and C2^N2 denote two different main ligands, and LX stands for a third ancillary ligand. By the new configuration, two asymmetric blue iridium complexes, namely dfbpy-Ir-dfppy and dfppy-Ir-dfbpy, were designed and synthesized, displaying the highly desirable blue emission peaks at 450 nm and 452 nm, respectively. Based on the two new emitters, the blue OLEDs exhibited good performances with the maximum external quantum efficiency (EQEmax) reaching 8.5% and CIE(x, y) coordinates of (0.21, 0.31). This study provides a new strategy for efficient blue iridium complexes through reasonably engineering the asymmetric tris-heteroleptic Ir-complex configuration. Organic light-emitting diode Phosphorescence Blue iridium Configuration Li, Shuaibing verfasserin aut Long, Yangke verfasserin aut Li, Yang verfasserin aut Zhou, Changjiang verfasserin (orcid)0000-0001-8185-4320 aut Wang, Xinzhong verfasserin aut Zhou, Liang verfasserin aut Enthalten in Dyes and pigments Amsterdam [u.a.] : Elsevier Science, 1980 220 Online-Ressource (DE-627)306658755 (DE-600)1500382-6 (DE-576)116550910 0143-7208 nnns volume:220 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 58.26 Technologie der Farben und Lacke VZ AR 220 |
allfields_unstemmed |
10.1016/j.dyepig.2023.111713 doi (DE-627)ELV065380037 (ELSEVIER)S0143-7208(23)00639-3 DE-627 ger DE-627 rda eng 660 VZ 58.26 bkl Lu, Guangzhao verfasserin (orcid)0009-0005-7362-533X aut Asymmetric 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The development of blue phosphorescent iridium(III) complexes has been a formidable challenge in the field of organic light-emitting diodes (OLEDs). Unlike the conventional blue Ir-complex structure of symmetric tri-/bis-cyclometalated coordination geometry, we herein report a new configuration of [Ir(C1^N1)(C2^N2)(LX)]-tris-heteroleptic Ir(III) complex, where C1^N1 and C2^N2 denote two different main ligands, and LX stands for a third ancillary ligand. By the new configuration, two asymmetric blue iridium complexes, namely dfbpy-Ir-dfppy and dfppy-Ir-dfbpy, were designed and synthesized, displaying the highly desirable blue emission peaks at 450 nm and 452 nm, respectively. Based on the two new emitters, the blue OLEDs exhibited good performances with the maximum external quantum efficiency (EQEmax) reaching 8.5% and CIE(x, y) coordinates of (0.21, 0.31). This study provides a new strategy for efficient blue iridium complexes through reasonably engineering the asymmetric tris-heteroleptic Ir-complex configuration. Organic light-emitting diode Phosphorescence Blue iridium Configuration Li, Shuaibing verfasserin aut Long, Yangke verfasserin aut Li, Yang verfasserin aut Zhou, Changjiang verfasserin (orcid)0000-0001-8185-4320 aut Wang, Xinzhong verfasserin aut Zhou, Liang verfasserin aut Enthalten in Dyes and pigments Amsterdam [u.a.] : Elsevier Science, 1980 220 Online-Ressource (DE-627)306658755 (DE-600)1500382-6 (DE-576)116550910 0143-7208 nnns volume:220 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 58.26 Technologie der Farben und Lacke VZ AR 220 |
allfieldsGer |
10.1016/j.dyepig.2023.111713 doi (DE-627)ELV065380037 (ELSEVIER)S0143-7208(23)00639-3 DE-627 ger DE-627 rda eng 660 VZ 58.26 bkl Lu, Guangzhao verfasserin (orcid)0009-0005-7362-533X aut Asymmetric 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The development of blue phosphorescent iridium(III) complexes has been a formidable challenge in the field of organic light-emitting diodes (OLEDs). Unlike the conventional blue Ir-complex structure of symmetric tri-/bis-cyclometalated coordination geometry, we herein report a new configuration of [Ir(C1^N1)(C2^N2)(LX)]-tris-heteroleptic Ir(III) complex, where C1^N1 and C2^N2 denote two different main ligands, and LX stands for a third ancillary ligand. By the new configuration, two asymmetric blue iridium complexes, namely dfbpy-Ir-dfppy and dfppy-Ir-dfbpy, were designed and synthesized, displaying the highly desirable blue emission peaks at 450 nm and 452 nm, respectively. Based on the two new emitters, the blue OLEDs exhibited good performances with the maximum external quantum efficiency (EQEmax) reaching 8.5% and CIE(x, y) coordinates of (0.21, 0.31). This study provides a new strategy for efficient blue iridium complexes through reasonably engineering the asymmetric tris-heteroleptic Ir-complex configuration. Organic light-emitting diode Phosphorescence Blue iridium Configuration Li, Shuaibing verfasserin aut Long, Yangke verfasserin aut Li, Yang verfasserin aut Zhou, Changjiang verfasserin (orcid)0000-0001-8185-4320 aut Wang, Xinzhong verfasserin aut Zhou, Liang verfasserin aut Enthalten in Dyes and pigments Amsterdam [u.a.] : Elsevier Science, 1980 220 Online-Ressource (DE-627)306658755 (DE-600)1500382-6 (DE-576)116550910 0143-7208 nnns volume:220 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 58.26 Technologie der Farben und Lacke VZ AR 220 |
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10.1016/j.dyepig.2023.111713 doi (DE-627)ELV065380037 (ELSEVIER)S0143-7208(23)00639-3 DE-627 ger DE-627 rda eng 660 VZ 58.26 bkl Lu, Guangzhao verfasserin (orcid)0009-0005-7362-533X aut Asymmetric 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The development of blue phosphorescent iridium(III) complexes has been a formidable challenge in the field of organic light-emitting diodes (OLEDs). Unlike the conventional blue Ir-complex structure of symmetric tri-/bis-cyclometalated coordination geometry, we herein report a new configuration of [Ir(C1^N1)(C2^N2)(LX)]-tris-heteroleptic Ir(III) complex, where C1^N1 and C2^N2 denote two different main ligands, and LX stands for a third ancillary ligand. By the new configuration, two asymmetric blue iridium complexes, namely dfbpy-Ir-dfppy and dfppy-Ir-dfbpy, were designed and synthesized, displaying the highly desirable blue emission peaks at 450 nm and 452 nm, respectively. Based on the two new emitters, the blue OLEDs exhibited good performances with the maximum external quantum efficiency (EQEmax) reaching 8.5% and CIE(x, y) coordinates of (0.21, 0.31). This study provides a new strategy for efficient blue iridium complexes through reasonably engineering the asymmetric tris-heteroleptic Ir-complex configuration. Organic light-emitting diode Phosphorescence Blue iridium Configuration Li, Shuaibing verfasserin aut Long, Yangke verfasserin aut Li, Yang verfasserin aut Zhou, Changjiang verfasserin (orcid)0000-0001-8185-4320 aut Wang, Xinzhong verfasserin aut Zhou, Liang verfasserin aut Enthalten in Dyes and pigments Amsterdam [u.a.] : Elsevier Science, 1980 220 Online-Ressource (DE-627)306658755 (DE-600)1500382-6 (DE-576)116550910 0143-7208 nnns volume:220 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 58.26 Technologie der Farben und Lacke VZ AR 220 |
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ddc 660 bkl 58.26 misc Organic light-emitting diode misc Phosphorescence misc Blue iridium misc Configuration |
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abstract |
The development of blue phosphorescent iridium(III) complexes has been a formidable challenge in the field of organic light-emitting diodes (OLEDs). Unlike the conventional blue Ir-complex structure of symmetric tri-/bis-cyclometalated coordination geometry, we herein report a new configuration of [Ir(C1^N1)(C2^N2)(LX)]-tris-heteroleptic Ir(III) complex, where C1^N1 and C2^N2 denote two different main ligands, and LX stands for a third ancillary ligand. By the new configuration, two asymmetric blue iridium complexes, namely dfbpy-Ir-dfppy and dfppy-Ir-dfbpy, were designed and synthesized, displaying the highly desirable blue emission peaks at 450 nm and 452 nm, respectively. Based on the two new emitters, the blue OLEDs exhibited good performances with the maximum external quantum efficiency (EQEmax) reaching 8.5% and CIE(x, y) coordinates of (0.21, 0.31). This study provides a new strategy for efficient blue iridium complexes through reasonably engineering the asymmetric tris-heteroleptic Ir-complex configuration. |
abstractGer |
The development of blue phosphorescent iridium(III) complexes has been a formidable challenge in the field of organic light-emitting diodes (OLEDs). Unlike the conventional blue Ir-complex structure of symmetric tri-/bis-cyclometalated coordination geometry, we herein report a new configuration of [Ir(C1^N1)(C2^N2)(LX)]-tris-heteroleptic Ir(III) complex, where C1^N1 and C2^N2 denote two different main ligands, and LX stands for a third ancillary ligand. By the new configuration, two asymmetric blue iridium complexes, namely dfbpy-Ir-dfppy and dfppy-Ir-dfbpy, were designed and synthesized, displaying the highly desirable blue emission peaks at 450 nm and 452 nm, respectively. Based on the two new emitters, the blue OLEDs exhibited good performances with the maximum external quantum efficiency (EQEmax) reaching 8.5% and CIE(x, y) coordinates of (0.21, 0.31). This study provides a new strategy for efficient blue iridium complexes through reasonably engineering the asymmetric tris-heteroleptic Ir-complex configuration. |
abstract_unstemmed |
The development of blue phosphorescent iridium(III) complexes has been a formidable challenge in the field of organic light-emitting diodes (OLEDs). Unlike the conventional blue Ir-complex structure of symmetric tri-/bis-cyclometalated coordination geometry, we herein report a new configuration of [Ir(C1^N1)(C2^N2)(LX)]-tris-heteroleptic Ir(III) complex, where C1^N1 and C2^N2 denote two different main ligands, and LX stands for a third ancillary ligand. By the new configuration, two asymmetric blue iridium complexes, namely dfbpy-Ir-dfppy and dfppy-Ir-dfbpy, were designed and synthesized, displaying the highly desirable blue emission peaks at 450 nm and 452 nm, respectively. Based on the two new emitters, the blue OLEDs exhibited good performances with the maximum external quantum efficiency (EQEmax) reaching 8.5% and CIE(x, y) coordinates of (0.21, 0.31). This study provides a new strategy for efficient blue iridium complexes through reasonably engineering the asymmetric tris-heteroleptic Ir-complex configuration. |
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