Tunable Control of the Hydrophilicity and Wettability of Conjugated Polymers by a Postpolymerization Modification Approach

Abstract

This method therefore allows an easy way to modulate the wettability and solubility of CP materials for a diverse series of applications.

Donor Functionalization Tuning the N‐Type Performance of Donor–Acceptor Copolymers for Aqueous‐Based Electrochemical Devices

“…[5,6] In addition, D-A copolymers are flexible and intrinsic mechanically tunable. [7] The soft nature of D-A copolymers with effective solution processing, which is beneficial for fabricating the materials as electrochemical devices. [8] Moreover, D-A copolymers allow facile control of chemical structure to access specific properties into the material itself.…”

Facile synthesis of annulated benzothiadiazole derivatives and their application as medium band gap acceptors in organic photovoltaic devices

“…Our approach to annulate the 2-(1,3-dithiol-2-ylidene)malonitrile group to the BT ring was based on the good nucleophilicity of the 2,2-dicyanoethylene-1,1-dithiolate anion and the fact the nucleophilic aromatic substitution reactions are known to readily occur on fluorinated BT cores. 37,38 Thus treatment of commercially available 4,7-dibromo-5-fluoro-2,1,3-benzothiadiazole (2a) with sodium 2,2-dicyanoethene-1,1-bis(thiolate) (1) in DMSO afforded reasonable yields of compound 3a (BTSCN), resulting from double substitution of the fluorine and the adjacent bromine group (Scheme 1). Applying the same reaction conditions to the difluorinated starting material (2b) resulted in the formation of 3b (FBTSCN) rather than any product resulting from the displacement of both fluorine groups.…”

Post-polymerisation approaches for the rapid modification of conjugated polymer properties

“…The photophysical properties are, however, not influenced by the increasing length of ethylene glycol chains. 95 Inagi and colleagues broadened the scope of polymer backbones that can undergo S N Ar reactions. 98,99 They prepared a tetrafluorophenylene-fluorene copolymer P46 and subsequently functionalised it with a variety of S-, O-and N-nucleophiles to yield polymers P47-49 (Fig.…”

“…17 Nucleophilic aromatic substitution of fluorinated, fully conjugated F8FBT. 93,95 oxidation of various conjugated polymers in the presence of halides can result in backbone halogenation. 102 Interestingly, the reaction was performed on the solid film, itself prepared via electrochemical polymerisation.…”