Synthesis and folding behaviour of poly(p-phenylene vinylene)-based β-sheet polychromophores.

ABSTRACT: This contribution describes the design and synthesis of β-sheet-mimicking synthetic polymers comprising distinct poly(p-phenylene vinylene) (PPV) and poly(norbornene) (PNB) backbones with multiple turns. The rod-coil-coil-rod tetrablock copolymers, synthesized using ring-opening metathesis polymerization (ROMP) and featuring orthogonal face-to-face π-π stacking and phenyl/perfluorophenyl interactions, show persistent folding both in bulk and at the single molecule level, irrespective of the number of β-turns. Single molecule polarization studies reveal that the copolymers are more anisotropic than the corresponding homopolymers. Examination of the spectral signatures of the single molecules shows a dominant emissive chromophore in the linked materials compared to the homopolymer. Th

SUBMITTER: Elacqua E 

PROVIDER: S-EPMC6385485 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature