PAEs, electron-poor

Fig. 4 Chemical structure of a family of PAEs developed independently by the groups of Bunz [57] and Yamamoto [52]. The polymers feature electron-poor 2,1,3-benzothiadiazole and electron-rich 2,5-dialkoxybenzene moieties in an alternating fashion...

In summary, it has been established that undoped PPEs are semiconductors, which exhibit an electrical conductivity of the order of 10" Scm"L Various derivatives have been p-doped by chemical or electrochemical means, and conductivities of up to 5 Scm were demonstrated. The charge carriers in these polymers were identified as polarons. Unfortunately, PAEs are notoriously difficult to oxidize, and no PAE derivative has yet been identified as sufficiently stable in its p-doped form to allow for technological exploitation under ambient conditions. PAEs which contain electron-poor groups such as 2,1,3-ben-... 

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