1. Introduction There are numerous papers describing the photophysics and photochemistry of porphyrins with a wide variety of meso-substituents and in a wide range of solvent systems [1,2,3,4,5,6,7,8,9,10,11,12]. Copper-containing porphyrins are particularly interesting, with complex photophysical properties, and they are amongst the most widely studied of the paramagnetic metalloporphyrins [13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47].
