Perylene good donor

Fig. 3 gives the structures of (i) six classes of good one-electron donors [TTF and friends HMTTF and friends TTT and friends BEDT-TTF perylene, and MPc (metal phthalocyanines)] and (ii) three classes of good one-electron acceptors (TCNQ, TNAP, and DCNQI). All these donors and acceptors are flat, or almost perfectly flat, molecules this requirement seems almost self-evident if one wants to form a tight crystal lattice with good intermolecular overlap. It is conceivable that this requirement could be relaxed, but a good example of this has not been found. It is known that there are small non-planarities (e.g. in BEDT-TTF) but it is not clear whether this is critical for the solid-state properties. 

The precursor was then placed in a solution of (2 2 1)- (DME DMF H2O), and sonicated for 4 minutes. This suspension was then added to a previously dissolved solution containing the organic species to be intercalated. The materials intercalated were tetracene (TT), 1,3,10,12-tetrachlorotetracene (TCT), perylene (Per), tetracyano-tetrathiafulvalene (TCN-T ), and 2,3-dithio-dipyrazine (DTDP) these are good electron donors, which are expeaed to donate electrons to the graphite planes. Intercalation reactions were run at 60 °C for one week. The products were isolated by filtering the reaction mixture, and washing six times each with water and ethanol. The material was then washed with acetone, until the effluent was clear. 

As we will see, the choice of electron donors associated with porphyrins has not evolved much over the years. In previous review articles, electron donors such as carotenes, aryl amines, and ferrocene derivatives have been examined. Concerning the class of energy donors, over the past decade, boron dipyrylmethanes (BODIPY) are probably the most widely used series of compounds. A very detailed study of their association and their excitation energy transfer to porphyrins has been carried out by LindseyIt should be noted that condensed aromatics such as anthracene, and especially perylene derivatives, may be good substitutes for BODIPYs. 

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