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Structures of some cationic amphiphilic porphyrins: zinc(II) meso-tetrakis(N-n-hexylpyridinium-3-yl)porphyrin (ZnTnHex-3-PyP); 5,10,15-tris(N-methyl-4-pyridyl)-20-(N-tetradecyl-4-pyridyl)porphyrin (TMPyP4-C14); 5-(4-trifluoromethylphenyl)-10,15,20-tris(4-trimethylammoniumphenyl)porphyrin (TFAP(3+))
