Synthesis and characterization of liquid crystal polycarbosilanes: poly(1-methyl-1-silaethylene), poly(1-methyl-1-silabutane) and poly(1-silabutane) with pendant mesogenic groups

Silacyclobutane‐Based Diblock Copolymers with Vinylferrocene, Ferrocenylmethyl Methacrylate, and [1]Dimethylsilaferrocenophane

“…The three examples of ferrocene‐containing polymers accessible by living chain‐growth mentioned would gain even more attention if they were to combine with other hybrid polymers, such as polycarbosilanes, in constitutionally homogeneous block copolymers. Innovative ceramics24–26 as well as novel functional materials would become available following, e.g., block‐selective macromolecular hydrosilylation strategies 27–29. Therefore, we started searching for powerful routes leading to such copolymers composed of ferrocene‐based and carbosilane‐based segments.…”

Anionic Grafting to Strategies for Functional Polymethacrylates: Convenient Preparation of Stimuli‐Responsive Block Copolymer Architectures

“…One convenient strategy for the introduction of functional groups focuses on the postmodification of BCPs. For instance, polystyrene‐ block ‐polyisoprene (PS‐ b ‐PI), polystyrene‐ block ‐polybutadiene (PS‐ b ‐PBd), and polysiloxane‐based BCPs can be used for this purpose and pendant functional moieties can be introduced by hydrosilylation, hydroboration, or thiol‐ene chemistry . As a result, subsequent grafting to protocols for the BCPs lead to grafted, comb, or dendritic BCPs .…”

“…For instance, polystyrene-block-polyisoprene (PS-b-PI), polystyrene-block-polybutadiene (PS-b-PBd), and polysiloxanebased BCPs can be used for this purpose and pendant functional moieties can be introduced by hydrosilylation, hydroboration, or thiol-ene chemistry. [39][40][41][42][43][44][45][46][47][48][49][50][51][52] As a result, subsequent grafting to protocols for the BCPs lead to grafted, comb, or dendritic BCPs. [53][54][55][56][57] As one prominent example, grafting methodologies can be applied for poly butadiene (PBd) with, for instance, PS or PBd macro anions by anionic polymerization after functionalization of the PBd backbone with chlorosilane moieties, which were introduced by hydrosilylation.…”

A convenient synthesis strategy for microphase-separating functional copolymers: the cyclohydrocarbosilane tool box

“…4 Furthermore, block copolymers and architectures thereof can consist of so-called stimuli-responsive polymers i.e., polymers which are capable of changing their conformation, solubility, or even break or form covalent bonds caused by different external triggers such as the change of temperature, pH value, light, redox reagents or electrical field. [35][36][37][38][39][40][41][42][43] There, especially the group of Frey succeeded in the formation of various functional polycarbosilanebased architectures by using convenient hydrosilylation protocols. There, the inorganic block segmentalso referred to as preceramic block segmentis directly converted into the ceramic material after thermal treatment maintaining the block copolymer-templated nanostructure.…”