Author/Authors :
Dedeian، Kenneth نويسنده , , Shi، Jianmin نويسنده , , Shepherd، Nigel نويسنده , , Forsythe، Eric نويسنده , , Morton، David C. نويسنده ,
Abstract :
Mixed (difluoro)phenylpyridine/(difluoro)phenylpyrazole tris-cyclometalated iridium complexes were prepared in order to study the effect of fluorination and the pyridine/pyrazole ratio on the emission and electrochemical properties. Increasing fluorination and replacement of pyridine by pyrazole both leads to a widening of the HOMO-LUMO gap and generally leads to a blue shift in emission.
