A novel spiro-annulated benzimidazole host for highly efficient blue phosphorescent organic light-emitting devices†,Chemical Communications

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A novel spiro-annulated benzimidazole host for highly efficient blue phosphorescent organic light-emitting devices†
Chemical Communications ( IF 4.3 ) Pub Date : 2018-04-10 00:00:00 , DOI: 10.1039/c8cc00903a
Wen-Cheng Chen _{1,

2,

3,

4} , Yi Yuan _{4,

5,

6,

7,

8} , Ze-Lin Zhu _{1,

2,

3,

4} , Shao-Fei Ni _{4,

9,

10,

11} , Zuo-Quan Jiang _{4,

5,

6,

7,

8} , Liang-Sheng Liao _{4,

5,

6,

7,

8} , Fu-Lung Wong _{1,

2,

3,

4} , Chun-Sing Lee _{1,

2,

3,

4}

Affiliation

A novel host material featuring a spiro-annulated benzimidazole configuration is exploited for blue phosphorescent organic light-emitting devices (PhOLEDs). The new material exhibits a high triplet energy (3.07 eV) and a bipolar characteristic and is effective as the host for FIrpic-, FIr6- and FK306-based blue PhOLEDs with high performances.

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