Perylene-bromine complex

Since the discovery of the first organic semiconductor perylene-bromine complex in 1954 [1], a large number of molecular conductors, including more than 100 molecular superconductors, have been prepared. Conducting molecular materials are characterized by the following features ... 

Akamatsu, H., H. Inokuchi, and Y. Matsunaga. 1954. Electrical conductivity of the perylene-bromine complex. Nature 173 168. 

Perylene is one of the oldest donors used in the preparation of highly conducting oiganic solids, and its use dates back at least to the 1954 report, by Akamatu et al. [1], of the conducting perylene-bromine complexes. As in the case of many other molecular... 

Typical for perylene and many other n-systems is the relatively high energy of the highest occupied molecular orbital (HOMO). Typical for the bromine molecule, on the other hand, is the low energy of the lowest unoccupied molecular orbital (LUMO). Therefore, in the experiment of Akamatu et al., a Mulliken charge transfer complex is formed between perylene and bromine, where perylene is the electron donor (D) and bromine is the acceptor (A). 

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