Control over microphase separation and dielectric properties via para-fluoro thiol click reaction

Abstract

Herein, we have reported a para-fluoro thiol click reaction allowing control of the microphase separation and dielectric properties of poly(pentafluorostyrene-b-acrylic acid) copolymers.

Microphase separation assisted reduction in the percolation threshold of MWCNT/block polymer composites

“…The implication of solvent vapour on polymer film provides a partial swelling that promotes the self-assembly of polymer chains. [28][29][30] The microphase separation was examined by AFM, and the corresponding images for all block copolymers having various ratios are presented in Fig. 2a.…”

Highly Conductive Solid Polymer Electrolytes by para-Fluoro/Thiol Clicked Diblock Copolymer Self-Assembly: Paving the Way for Nanostructured Materials for Lithium-Ion Conductivity

“…Most importantly, the para -fluorine atom of PFS is very labile toward the nucleophilic substitution, which provides a scope for the introduction of new functional moieties into the polymeric chain . For example, one of the best versatile nucleophilic systems is para -fluoro/thiol click reaction to replace the para -fluorine of poly­(pentafluorostyrene) (PPFS) block. − The reaction takes place at ambient temperature without any side reactions. The use of thiols to introduce various functional groups into polymer chains is very popular in polymer chemistry due its mild reaction conditions and high conversions to achieve the desired properties in the modified polymers. − In a recent work, we have finely tuned the morphology of PS- b -PPFS block copolymers by manipulating the solubility parameter (δ) through para -fluoro/thiol click reaction using different thiols .…”

para-Fluoro/thiol click chemistry-driven pentafluorostyrene-based block copolymer self-assembly: to mimic or not to mimic the solubility parameter?

“…[33][34][35] PPFS is a versatile polymeric material as the labile para-fluorine of the pentafluorophenyl group can be selectively substituted by thiols. [34][35][36][37][38][39][40] The para-fluoro/thiol click reaction takes place under mild reaction conditions without any side reactions. In this context, the nucleophilic substitution of the para-fluorine of the PPFS block by thiols can generate a large library of thiol-substituted BCPs and the morphology as well as the properties of the modified BCPs could be tuned by adjusting the chemical nature of the thiols and the relative block lengths of the BCPs.…”