Oligomeric Phenylenevinylene with Cross Dipole Arrangement and Amorphous Morphology: Enhanced Solid-State Luminescence Efficiency and Electroluminescence Performance


  • We are grateful for financial support from the National Science Foundation of China (grant numbers: 20125421, 90101026, 50303007, 20474024, 50473001), from the Ministry of Science and Technology of China (grant number: 2002CB6134003), and from PCRIT. Supporting Information is available online at Wiley InterScience or from the author.


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A new oligo(phenylenevinylene) linking three distyrylbenzene (DSB) molecules through a central terphenyl group is reported (see Figure). The resultant DSB trimer with an amorphous structure in the solid state exhibits excellent thermal stability and intense blue photoluminescence. The maximum luminance approaching 4000 cd m–2 and efficiency up to 3.5 cd A–1 can be obtained in the corresponding light-emitting devices with a low turn-on voltage (∼4 V).