Author/Authors :
Frebort، نويسنده , , ?t?p?n and Vala، نويسنده , , Martin and Lu??k Jr.، نويسنده , , Stanislav and Honov?، نويسنده , , Jana and Mikysek، نويسنده , , Tom?? and Eli??، نويسنده , , Zden?k and Ly?ka، نويسنده , , Anton?n، نويسنده ,
Abstract :
Two pyrrolo[3,4-c]pyrrole-1,4-diones (diketopyrrolopyrroles, DPP) with 4″-diphenylamino-stilben-4′-yl substituents at the 3- and 3,6-positions of the DPP heterocycle are synthesized. The 1H and 13C NMR spectra of their soluble derivatives, N(2) and N(5)-dialkylated by 2-ethylhexyl bromoacetate, were completely assigned. Soluble DPPs show photovoltaic activity in bulk heterojunction solar cells. Their electrochemistry and absorption and fluorescence spectra were studied.
Keywords :
Diketopyrrolopyrrole , Alkylation , Organic Photovoltaics , NMR
