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Star‐Shaped Thieno‐[3,4‐ b ]‐Pyrazines: A New Class of Red‐Emitting Electroluminescent Materials
Author(s) -
Thomas K.R.J.,
Lin J.T.,
Tao Y.T.,
Chuen C.H.
Publication year - 2002
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 - 10.1002/1521-4095(20020605)14:11<822::aid-adma822>3.0.co;2-s
Subject(s) - electroluminescence , materials science , molecule , condensation , fluorescence , star (game theory) , absorption (acoustics) , aryl , photochemistry , nanotechnology , organic chemistry , optics , chemistry , astrophysics , composite material , physics , layer (electronics) , alkyl , thermodynamics
A new class of pure red fluorescent dyes , which are both emitting and hole‐transporting, has been designed. Thieno‐[3,4‐ b ]‐pyrazines, fully substituted with bulky aryl substituents (giving the molecules an overall star shape, see Figure), could be easily synthesized by condensation of 2,5‐diaryl‐3,4‐diaminothiophenes with 1,2‐diaryl‐1,2‐diketones. Their absorption bands are typically around 320–330 and 450–530 nm.