ORGN 367

We have synthesized novel fullerene C₆₀ symmetrical pentaadducts (shuttlecocks) that have been incorporated as electron-accepting, 1-dimensional, self-organizing elements within bulk hetero junction photovoltaic devices.  The improved morphological control in these systems was demonstrated in these devices.  Interestingly, crystal-packing structures of several arylated derivatives are highly dependent on the incorporated solvents, leading to sheet-like, columnar, or close-packed organization in the molecules.  A correlation between crystal structure parameters (e.g. fullerene-fullerene distances) and efficiency of the devices will be presented.