Phthalocyanine semiconductors monomeric

Similar to the cases in other small molecules and polymers, most materials composed of phthalocyanine compounds are revealed to work as p-type semiconductors for OFET applications with only few phthalocyanine materials as n-type semiconductors and even less as ambipolar ones. Among the p-type tetrapyrrole semiconductors, monomeric phthalocyanine compounds hold all the trumps with only a few double- and triple-deckers together with some porphyrin derivatives having been reported. 

Figure 4 shows the molecular structures of the monomeric phthalocyanines used as the active layer of p-type OFET devices, and Table 1 organizes the performance of these phthalocyanine-based OFETs. As can be seen, unsubstituted metal-free phthalocyanine and its metal complexes, axial substituted metal phthalocyaines, and peripheral tetra-substituted phthalocyanines all can work as p-type semiconductors for OFET devices. Most of the semiconductors composed of peripheral unsubstituted and axial substituted phthalocyanine derivatives are prepared through vacuum deposition method with a few exceptions being made of corresponding single... 

Fig. 4 Molecular structures of the monomeric phthalocyanines used as semiconductors of p-type OFET...

---