Hypercrosslinked polyaniline and polypyrrole

Polyanilines contain a number of amine and/or imine functionalities that can enter the reaction of alkylation with alkyl halides [260]. A scheme below shows the microwave-assisted crossfinking of emeraldine base polyaniline, dissolved in dimethylformamide, with diiodomethane. 

Germain at al. [261] used a similar chemistry to convert linear chains of polypyrrol into hypercrosslinked materials. The product crosslinked with diiodomethane exhibits a pretty high surface area of 730m /g, mainly formed by small nanopores of around 1.0 nm in diameter. It reversibly adsorbs 1.6 wt% hydrogen at 77 K and 0.4 MPa. The iodoform-crosslinked 

In 2008 the same authors reported the synthesis of polyaniline-type size-selective hypercrosslinked network polymers [262]. According to the developed protocol, leucoemeraldine polyaniline and diaminobenzene were coupled with diiodobenzene and tribromobenzene. The resulting 

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