6533b831fe1ef96bd1299ace

RESEARCH PRODUCT

Pillar[5]arene-Diketopyrrolopyrrole Fluorescent Copolymer: A Promising Recognition and Adsorption Material for Adiponitrile by Selective Formation of a Conjugated Polypseudorotaxane

Hao TangLinxian XuLingyun WangDerong CaoHerbert MeierWei Cui

subject

Materials scienceRotaxanesPolymers and PlasticsPolymers010405 organic chemistryOrganic ChemistryButaneConjugated systemPillararene010402 general chemistryAdiponitrile01 natural sciencesFluorescence0104 chemical scienceschemistry.chemical_compoundAdsorptionMonomerchemistryNitrilesPolymer chemistryMaterials ChemistryCopolymerAdsorption

description

Conjugated pillar[5]arene-diketopyrrolopyrrole copolymer (P1) is synthesized by the copolymerization of a difunctionalized pillar[5]arene and a diketopyrrolopyrrole-based monomer, which shows large extinction coefficients (1.1 × 104 m-1 cm-1 ) at 519 nm and strong emission at 587 nm. P1 exhibits very strong host-guest binding affinity towards adiponitrile but low binding affinity towards 1,4-dihalobutane and 1,4-bis(imidazol-1-yl)butane. Such an enhanced selectivity is first found in the polypseudorotaxane between pillararene and neutral guests in organic solution and is successfully used for the recognition and adsorption of adiponitrile by the formation of a P1-adiponitrile polypseudorotaxane.

https://doi.org/10.1002/marc.201700161