Controlled Synthesis of Conjugated Polymers and Block Copolymers

Preparation of different conjugated polymers characterized by complementary electronic properties from an identical precursor

“…6 In those cases where the low solubility of the latter can prevent the synthesis of high-molecular-weight materials or compromise the device fabrication processes due to their planar structure and tendency to aggregate via extended π-π interactions, polymeric precursors have often been employed, especially when the addition of side groups that can improve the solubility is not a viable option. 6,[21][22][23] A precursor is designed to enhance the solubility of a target material that is then obtained on-demand from the former upon a high-yielding and selective reaction. Several precursor approaches have been designed in the past decades targeting conjugated polymers [24][25][26][27][28][29][30] (but not limited to them), [31][32][33][34] with the constant being that one precursor produced one final material.…”

A SNAr‐Active External Initiator that Enables Heterobifunctional Clickable Polythiophenes

“…[3][4][5][6][7] While "living" polymer chains produced by DOI: 10.1002/macp.202300347 KCTP are typically quenched by the addition of acid, affording a hydrogen end-group, there have been many examples of Grignard reagents being used to end-cap growing polychalcogenophenes, dating back to 2004. [8][9][10] The most notable of these is ethynylmagnesium bromide due to the role of ethynyl groups in copper-catalyzed alkyne-azide cycloaddition (CuAAC) "click" reactions. [11][12][13][14] Although control over the terminal end functionalization of polythiophenes is well understood, modifying the polymer initiating ends with reactive functional groups has been less explored, limiting the range of post-polymerization modifications.…”