Side-Chain Cobaltocenium-Containing Polymers: Controlled Polymerization and Applications

Abstract

Due to the cationic nature, cobaltocenium-containing polymers are novel metal-containing polyelectrolytes, which could find applications in the fields of magnetic materials, stimuliresponsive materials, chemical/bio sensors and antimicrobials. More interestingly, these polymers show counterion-dependent solubility and hereinafter unique properties.Functional cobaltocenium-containing polymers can be prepared through either direct polymerization of cobaltocenium-functionalized monomers or post-polymerization modification of precursor polymers.This chapter summarizes the most recent progress of side-chain cobaltocenium-containing polymers via controlled polymerization methods, such as ATRP, RAFT, and ROMP. Different methods involving the synthesis of cobaltocenium-containing monomers are discussed. Furthermore, self-assembly and biomedical applications of these metallopolymers in the field of antimicrobials are introduced.

Metallo-Polyelectrolyte-Based Robust Anion Exchange Membranes via Acetalation of a Commodity Polymer

“…Compound 1 was synthesized by sequential azidization 37 and click chemistry. 38 First, 4-(bromomethyl)benzaldehyde (0.3 g, 1.5 mmol) and sodium azide (0.195 g, 3 mmol) were dispersed in 10 mL anhydrous DMF. The solution was stirred at room temperature overnight.…”

Rational design of cobaltocenium-containing polythioether type metallo-polyelectrolytes as HCl corrosion inhibitors for mild steel

“…More importantly, owing to the quantitative post-polymerization modification via CuAAC, the molecular weight of the resulting inhibitors can be calculated theoretically and the polydispersity should remain consistent with the corresponding precursor polymers P-OMs, providing an alternative method to solve the challenge of the molecular weight characterization of the cobaltocenium-based polyelectrolyte. 42 It should be mentioned that our attempts to direct the polymerization of the cobaltocenium-based diene monomer failed via either the photo-induced thiol-ene reaction or RAFT/MADIX polymerization (Fig. S5 †), which may due to the relatively inert reactivity of such a monomer towards free radicals and the possible side reactions with thiol groups.…”

Role of Ionic Concentration and Distribution in Anionic Conductivity: Case Study on a Series of Cobaltocenium-Containing Anion Exchange Membranes with Precise Structure Control

“…Then, compound 3b was synthesized by CuAAC between 3a and ((trimethylsilyl)ethynyl)-cobaltocenium hexafluorophosphate. 46 The obtained azide 3a (0.443 g, 2.1 mmol) and ((trimethylsilyl)ethynyl)cobaltocenium hexafluorophosphate (2.98 g, 6.93 mmol) were completely dissolved in anhydrous acetonitrile and degassed by purging in N 2 for 30 min. Then, CuI (0.16 g, 0.84 mmol) was added to another 100 mL flask and degassed with N 2 for 30 min.…”