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Oligomeric Phenylenevinylene with Cross Dipole Arrangement and Amorphous Morphology: Enhanced Solid‐State Luminescence Efficiency and Electroluminescence Performance
Author(s) -
He F.,
Xu H.,
Yang B.,
Duan Y.,
Tian L. L.,
Huang K. K.,
Ma Y. G.,
Liu S. Y.,
Feng S. H.,
Shen J. C.
Publication year - 2005
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200501239
Subject(s) - electroluminescence , materials science , amorphous solid , trimer , luminescence , terphenyl , photoluminescence , dipole , thermal stability , solid state , molecule , luminance , optoelectronics , nanotechnology , chemical engineering , crystallography , optics , engineering physics , organic chemistry , physics , chemistry , dimer , layer (electronics) , engineering
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).