Author/Authors :
Lux، نويسنده , , A. and Holmes، نويسنده , , A.B. and Cervini، نويسنده , , R. and Davies، نويسنده , , J.E. and Moratti، نويسنده , , S.C. and Grüner، نويسنده , , J. and Cacialli، نويسنده , , Juan Carlos F. and Friend، نويسنده , , R.H.، نويسنده ,
Abstract :
New CF3-substituted PPV derivatives have been synthesised by Wittig-Horner polycondensation. To obtain a better understanding of the relationship between absorption and luminescence properties and structure a single crystal X-ray analysis of a model oligomer has been performed. The effect of electron withdrawing trifluoromethyl groups at vinylidene linkages in PPVs on absorption, luminescence, hole blocking and electron injecting properties has been investigated.
Keywords :
Wittig-Horner reaction , Hole blocking layer , Light emitting diodes , Electron withdrawing groups
