Highly Efficient Deep-Blue Phosphorescent OLEDs Based on a Trimethylsilyl-Substituted Tetradentate Pt(II) Complex
Source abstract
Abstract
Compared to Ir(III) complexes with octahedral geometries, Pt(II) complexes with square planar geometries show superior optical properties because their flat shapes lead to an orientation that enhances the outcoupling of organic light-emitting diodes (OLEDs). However, the flat shapes of Pt(II) complexes typically induce a bathochromic shift, limiting their application in high-performance deep-blue phosphorescent OLEDs with high color purity. In this study, bulky trimethylsilyl (TMS)-substituted blue phosphorescent Pt(II) complex (PtON7-TMS) is successfully synthesized to improve color purity. The TMS substituent containing Si atom effectively suppresses intermolecular interaction and aggregation even when the complex concentration in the film state is higher than 30 wt %. As a result, the PtON7-TMS-based OLEDs exhibit a maximum external quantum efficiency of 21.4%, along with a pure-blue color of CIE (0.14, 0.09) at 20 wt % doping concentration and a full-width at half maximum of 30 nm. The pure blue color is maintained at a higher doping concentration (>30 wt %).
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Organic Light-Emitting Diodes Research · Luminescence and Fluorescent Materials · Catalytic Cross-Coupling Reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea
Department of Materials Science and Engineering, 3D Convergence Center, Inha University, Incheon 22212, Republic of Korea
Funding
National Research Foundation of Korea · Ministry of Trade, Industry and Energy
References (56)
Show source-provided references
1. 10.1021/ic400950u10.1021/ic400950u ↗
2. 10.1039/C5DT01844G10.1039/C5DT01844G ↗
3. 10.1039/D0TC03773G10.1039/D0TC03773G ↗
4. 10.1039/C9MH01268K10.1039/C9MH01268K ↗
5. 10.1021/acsami.1c0023810.1021/acsami.1c00238 ↗
6. 10.1002/adma.20170215910.1002/adma.201702159 ↗
7. 10.1002/adom.20160074910.1002/adom.201600749 ↗
8. 10.1021/acsami.8b1795710.1021/acsami.8b17957 ↗
9. 10.1002/adom.20210020310.1002/adom.202100203 ↗
10. 10.1002/advs.20210058610.1002/advs.202100586 ↗
11. 10.1038/s41566-022-00958-410.1038/s41566-022-00958-4 ↗
12. 10.1002/adma.20140175910.1002/adma.201401759 ↗
13. 10.1021/acs.chemmater.5b0495710.1021/acs.chemmater.5b04957 ↗
14. 10.1063/1.497867410.1063/1.4978674 ↗
15. 10.1021/acs.chemmater.9b0426310.1021/acs.chemmater.9b04263 ↗
16. 10.1002/adfm.20210096710.1002/adfm.202100967 ↗
17. 10.1002/anie.20211551510.1002/anie.202115515 ↗
18. 10.1002/1521-3773(20020902)41:17<3183::AID-ANIE3183>3.0.CO;2-A10.1002/1521-3773(20020902)41:17<3183::AID-ANIE3183>3.0.CO;2-A ↗
19. 10.1021/ja044313w10.1021/ja044313w ↗
20. 10.1039/c1dt10834d10.1039/c1dt10834d ↗
21. 10.1002/anie.20150518510.1002/anie.201505185 ↗
22. 10.1039/C6TC00825A10.1039/C6TC00825A ↗
23. 10.1016/j.ccr.2017.07.01610.1016/j.ccr.2017.07.016 ↗
24. 10.1021/acs.inorgchem.7b0273610.1021/acs.inorgchem.7b02736 ↗
25. 10.1039/C9TC01585J10.1039/C9TC01585J ↗
26. 10.1002/advs.20180193010.1002/advs.201801930 ↗
27. 10.1002/adma.20200861310.1002/adma.202008613 ↗
28. 10.1038/nphoton.2016.23010.1038/nphoton.2016.230 ↗
29. 10.1021/acs.inorgchem.1c0396710.1021/acs.inorgchem.1c03967 ↗
30. 10.1002/adma.20120212310.1002/adma.201202123 ↗
31. 10.1002/adfm.20160431810.1002/adfm.201604318 ↗
32. 10.1039/C7TC01369H10.1039/C7TC01369H ↗
33. 10.1016/j.orgel.2017.07.00210.1016/j.orgel.2017.07.002 ↗
34. 10.1021/acs.organomet.8b0065910.1021/acs.organomet.8b00659 ↗
35. 10.3762/bjoc.14.12410.3762/bjoc.14.124 ↗
36. 10.1002/tcr.20180016510.1002/tcr.201800165 ↗
37. 10.1021/acsami.9b1171510.1021/acsami.9b11715 ↗
38. 10.1021/acsaelm.9b0082710.1021/acsaelm.9b00827 ↗
39. 10.1002/anie.20130254110.1002/anie.201302541 ↗
40. 10.1002/adom.20140034110.1002/adom.201400341 ↗
41. 10.1039/C9QM00347A10.1039/C9QM00347A ↗
42. 10.1021/acs.jpclett.8b0079710.1021/acs.jpclett.8b00797 ↗
43. 10.1002/adom.20200040610.1002/adom.202000406 ↗
44. 10.1016/j.ccr.2005.06.02010.1016/j.ccr.2005.06.020 ↗
45. 10.1021/acs.inorgchem.7b0096110.1021/acs.inorgchem.7b00961 ↗
46. 10.1021/acsami.1c0498110.1021/acsami.1c04981 ↗
47. 10.1002/adma.20180423110.1002/adma.201804231 ↗
48. 10.1038/nmat444610.1038/nmat4446 ↗
49. 10.3389/fchem.2021.75835710.3389/fchem.2021.758357 ↗
50. 10.1038/ncomms1556610.1038/ncomms15566 ↗
51. 10.1038/s41467-018-03602-410.1038/s41467-018-03602-4 ↗
52. Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Scuseria, G. E.; Robb, M. A.; Cheeseman, J. R.; Scalmani, G.; Barone, V.; Mennucci, B.; Petersson, G. A.; Nakatsuji, H.; Caricato, M.; Li, X.; Hratchian, H. P.; Izmaylov, A. F.; Bloino, J.; Zheng, G.; Sonnenberg, J. L.; Hada, M.; Ehara, M.; Toyota, K.; Fukuda, R.; Hasegawa, J.; Ishida, M.; Nakajima, T.; Honda, Y.; Kitao, O.; Nakai, H.; Vreven, T.; Montgomery, Jr., J. A.; Peralta, J. E.; Ogliaro, F.; Bearpark, M.; Heyd, J. J.; Brothers, E.; Kudin, K. N.; Staroverov, V. N.; Kobayashi, R.; Normand, J.; Raghavachari, K.; Rendell, A.; Burant, J. C.; Iyengar, S. S.; Tomasi, J.; Cossi, M.; Rega, N.; Millam, J. M.; Klene, M.; Knox, J. E.; Cross, J. B.; Bakken, V.; Adamo, C.; Jaramillo, J.; Gomperts, R.; Stratmann, R. E.; Yazyev, O.; Austin, A. J.; Cammi, R.; Pomelli, C.; Ochterski, J. W.; Martin, R. L.; Morokuma, K.; Zakrzewski, V. G.; Voth, G. A.; Salvador, P.; Dannenberg, J. J.; Dapprich, S.; Daniels, A. D.; Farkas, O.; Foresman, J. B.; Ortiz, J. V.; Cioslowski, J.; Fox, D. J. Gaussian 09; Revision A.1, Gaussian, Inc.: Wallingford, 2009.
53. 10.1021/acs.jpclett.9b0168510.1021/acs.jpclett.9b01685 ↗
54. Yersin H. · 2008
55. 10.1039/c3tc32092h10.1039/c3tc32092h ↗
56. 10.1063/1.350459910.1063/1.3504599 ↗