Silole-containing conjugated polymers syntheses

The incorporation of siloles in polymers is of interest and importance in chemistry and functionalities. Some optoelectronic properties, impossible to obtain in silole small molecules, may be realized with silole-containing polymers (SCPs). The first synthesis of SCPs was reported in 1992.21 Since then, different types of SCPs, such as main chain type 7r-conjugated SCPs catenated through the aromatic carbon of a silole, main chain type cr-conjugated SCPs catenated through the silicon atom of a silole, SCPs with silole pendants, and hyperbranched or dendritic SCPs (Fig. 2), have been synthesized.10 In this chapter, the functionalities of SCPs, such as band gap, photoluminescence, electroluminescence, bulk-heterojunction solar cells, field effect transistors, aggregation-induced emission, chemosensors, conductivity, and optical limiting, are summarized. 

Compared to the silole-containing polymers, phosphole has received little attention as a building block for extended -conjugated systems, despite its unique characteristics and numerous applications in organic and metal coordination chemistry. The first practically applicable synthesis was independently presented in 1959 by two groups. The first successful synthesis of phosphole-containing 7i-conjugated polymers was established by Tilley and... 

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