Abstract
On the basis of different generation carbazole dendrons, a series of self-host yellow Ir dendrimers (Y-G0, Y-G1 and Y-G2) have been successfully synthesized and characterized in detail. It is found that the peripheral dendrons can effectively reduce the intermolecular interactions between emissive Ir cores, as verified by the increased photoluminescence quantum yields and film lifetimes. Among these dendrimers, Y-G2 bearing the second generation dendrons shows the best non-doped device performance, revealing a peak luminous efficiency of 20.2 cd/A. The value is nearly twice that of Y-G0 without any dendrons, which could be further improved to 32.1 cd/A by dispersing Y-G2 into a host matrix. We believe that this work will shed light on the development of highly efficient yellow phosphorescent dendrimers with a self-host strategy.
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Yook KS, Lee JY. Adv Mater, 2014, 26: 4218–4233
So F, Krummacher B, Mathai MK, Poplavskyy D, Choulis SA, Choong VE. J Appl Phys, 2007, 102: 091101
Xiao LX, Chen ZJ, Qu B, Luo JX, Kong S, Gong QH, Kido JJ. Adv Mater, 2011, 23: 926–952
Aizawa N, Pu YJ, Watanabe M, Chiba T, Ideta K, Toyota N. Nat Commun, 2014, 5: 5756
Fan Q, Liu Y, Hao Z, Li C, Wang Y, Tan H, Zhu W, Cao Y. Sci China Chem, 2015, 58: 1152–1158
Wang D, Liu Q, Yu Y, Wu Y, Zhang X, Dong H, Ma L. Sci China Chem, 2015, 58: 993–998
Zhan X, Wu Z, Lin Y, Xie Y, Peng Q, Li Q, Ma D, Li Z. Chem Sci 2016, doi: 101039/c1036sc00559d
Lo SC, Burn PL. Chem Rev, 2007, 107: 1097–1116
Hwang SH, Moorefield CN, Newkome GR. Chem Soc Rev, 2008, 37: 2543–2557
Jung KM, Kim KH, Jin JI, Cho MJ, Choi DH. J Polym Sci, Part A: Polym Chem, 2008, 46: 7517–7533
Qin T, Ding J, Wang L, Baumgarten M, Zhou G, Muellen K. J Am Chem Soc, 2009, 131: 14329–14336
Ding J, Lu J, Cheng Y, Xie Z, Wang L, Jing X, Wang F. Adv Funct Mater, 2008, 18: 2754–2762
Ding J, Wang B, Yue Z, Yao B, Xie Z, Cheng Y, Wang L, Jing X, Wang F. Angew Chem Int Ed, 2009, 48: 6664–6666
Ding J, Zhang B, Lue J, Xie Z, Wang L, Jing X, Wang F. Adv Mater, 2009, 21: 4983–4986
Zhang B, Tan G, Lam CS, Yao B, Ho CL, Liu L, Xie Z, Wong WY, Ding J, Wang L. Adv Mater, 2012, 24: 1873–1877
Xia D, Wang B, Chen B, Wang S, Zhang B, Ding J, Wang L, Jing X, Wang F. Angew Chem Int Ed, 2014, 53: 1048–1052
Wang Y, Wang S, Zhao N, Gao B, Shao S, Ding J, Wang L, Jing X, Wang F. Polym Chem, 2015, 6: 1180–1191
Yu M, Wang S, Shao S, Ding J, Wang L, Jing X, Wang F. J Mater Chem C, 2015, 3: 861–869
Zhu M, Li Y, Hu S, Li Cg, Yang C, Wu H, Qin J, Cao Y. Chem Commun, 2012, 48: 2695–2697
Zhu M, Zou J, He X, Yang C, Wu H, Zhong C, Qin J, Cao Y. Chem Mater, 2012, 24: 174–180
Wu H, Zhou G, Zou J, Ho CL, Wong WY, Yang W, Peng J, Cao Y. Adv Mater, 2009, 21: 4181–4184
Zou J, Wu H, Lam CS, Wang C, Zhu J, Zhong C, Hu S, Ho CL, Zhou GJ, Wu H, Choy WCH, Peng J, Cao Y, Wong WY. Adv Mater, 2011, 23: 2976–2980
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Wang, B., Shao, S., Ding, J. et al. Self-host yellow iridium dendrimers based on carbazole dendrons: synthesis, characterization and application in solution-processed organic light-emitting diodes. Sci. China Chem. 59, 1593–1599 (2016). https://doi.org/10.1007/s11426-016-0247-9
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DOI: https://doi.org/10.1007/s11426-016-0247-9