期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 8, 页码 9520-9527出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b20568
关键词
circularly polarized luminescence; organic light-emitting diode; aggregation-induced emission; platinum complex; binaphthalene
资金
- National Natural Science Foundation of China [21971115, 61875090, 91833306]
Circularly polarized luminescent (CPL) materials have received a lot of interest due to their potential applications in next-generation displays. However, the development of easily accessible red circularly polarized phosphorescent emitters for practical organic light-emitting diodes fabrication remains a grand challenge. In this paper, we report a new family of CPL-active platinum complexes based on the binaphthalene chiral platform. These axially chiral platinabinaphthalenes were facile synthesized by directly incorporating platinum(II) into the pi-conjugated backbone of a commercially available enantiopure binaphthalene derivate. These complexes exhibit aggregation-induced circularly polarized phosphorescence enhancement with high quantum yields of up to 66% and luminescence dissymmetry factors of around 2.6 x 10(-3). Moreover, solution-processable circularly polarized organic light-emitting diodes (CPOLEDs) using these complexes as emitters show good performance with the maximum luminance of up to 3500 cd m(-2) and dissymmetry factor values of around 1.0 X 10(-3). These findings by the rational design of axially chiral platinabinaphthalenes are important for the development of high-performance CPL complexes for CPOLEDs.
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