Synthesis and properties of weakly coupled dendrimeric multiporphyrin light-harvesting arrays and hole-storage reservoirsElectronic supplementary information (ESI) available: a description of multiphoton effects at high excitation intensities; the complete Experimental section including descriptions of the syntheses of the arrays; SEC data, 1H NMR spectra, and mass spectra for all new porphyrins and multiporphyrin arrays; a description of exploratory studies in the purification of Zn20Fb; data from a comparative study of analytical SEC conditions; representative mass spectral data under different conditions; and representative absorption and fluorescence spectra of the arrays. See http://www.rsc.org/suppdata/jm/b1/b105108n/