Hofman Anton H, Dijkstra Peter, Kamperman Marleen
Polymer Science, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 3, Groningen, 9747 AG, The Netherlands.
Macromol Rapid Commun. 2025 Mar;46(5):e2400925. doi: 10.1002/marc.202400925. Epub 2025 Jan 2.
Conjugated polyelectrolytes (CPEs), materials that are defined by a -conjugated backbone and charged ionic functional groups, are frequently prepared through direct polymerization of charged monomer species in aqueous media. This route is, however, often accompanied by labor-intensive work-up procedures, low yields, and ultimately results in materials that are difficult to characterize. To overcome these inconveniences, in this work protection chemistry is applied on sulfonate-functionalized fluorene monomers that are polymerized under standard Suzuki polycondensation conditions to obtain protected donor-acceptor copolymers. Treatment of the organo-soluble precursors under nucleophilic conditions resulted in quantitative removal of the protecting groups, thereby exposing the strong anionic functionalities. Unlike in other studies, the conjugated backbones remained unharmed during this process: the photophysical properties of the CPEs are identical to their hydrophobic precursors.
共轭聚电解质（CPEs）是一类由π共轭主链和带电离子官能团构成的材料，通常通过在水性介质中使带电单体物种直接聚合来制备。然而，这条路线常常伴随着劳动强度大的后处理程序、低产率，最终得到难以表征的材料。为了克服这些不便之处，在本工作中，保护化学被应用于磺酸酯官能化芴单体上，这些单体在标准铃木缩聚条件下聚合以获得受保护的供体-受体共聚物。在亲核条件下处理有机可溶性前体导致保护基团被定量去除，从而暴露出强阴离子官能团。与其他研究不同的是，在此过程中共轭主链未受损害：CPEs的光物理性质与其疏水前体相同。
