Key points are not available for this paper at this time.
Twenty-one components self-assemble to form the large (ca. 25 nm2), planar porphyrin arrays of type 1: four dipyridylporphyrins, four tripyridylporphyrins, one tetrapyridylporphyrin, and twelve PdCl2 units.
Drain et al. (Fri,) studied this question.