Perylene functional colorants

Besides metallophthalocyanines 7 as photosensitizers (91,93), some intensely colored perylene diimine derivatives such as 8 have also been proposed as functional chlorophyll analogues... 

More recently, vesicle bilayer nanocapsules constructed using perylene diimide molecules have been prepared in which they encapsulated donor molecules for studying artificial photosynthesis." The fascinating functional feature of these loaded vesicles is that they provide ultrasensitive pH information about their aqueous environment by displaying pH-dependent fluorescence color changes covering... 

In this review, we restrict ourselves to metal-mediated assemblies of functional 7T-systems, which absorb light in the visible region (i.e. A. > 400 nm). Thus, materials whose color arises from metal ions or metal-ligand charge transfer (MLCT) are not included here. Self-assembhes derived from free base porphyrins, metalloporphyrins and perylene bisimide dyes have shown promising applications in artificial LH systems. Therefore, some fundamental properties of a few representative chromophores, namely meso-tetraphenylporphyrin (TPP), zinc tetraphenylporphyrin (ZnTPP), tetra-phenoxy-substituted perylene bisimide (PPBI) and bay area imsubstituted perylene bisimide (PBI), are briefly summarized herein. These properties are essential for the understanding of the photophysical and photochemical behavior of assemblies derived from such dyes. 

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