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dc.contributor.authorTenopala Carmona, Francisco
dc.contributor.authorFronk, Stephanie
dc.contributor.authorBazan, Guillermo C.
dc.contributor.authorSamuel, Ifor David William
dc.contributor.authorPenedo-Esteiro, Juan Carlos
dc.identifier.citationTenopala Carmona , F , Fronk , S , Bazan , G C , Samuel , I D W & Penedo-Esteiro , J C 2018 , ' Real-time observation of conformational switching in single conjugated polymer chains ' , Science Advances , vol. 4 , no. 2 , eaao5786 , pp. 1-12 .
dc.identifier.otherPURE: 252070846
dc.identifier.otherPURE UUID: bd387855-894c-4cc1-bfd1-90c3dd34923c
dc.identifier.otherScopus: 85042314635
dc.identifier.otherORCID: /0000-0002-4603-034X/work/60196544
dc.identifier.otherWOS: 000426845500039
dc.identifier.otherORCID: /0000-0002-5807-5385/work/74872781
dc.descriptionThis work was supported by the Engineering and Physical Sciences Research Council UK (EPSRC) (project EP/N009886/1). F.T.-C. thanks EPSRC (Grant EP/L015110/1). S.F. acknowledges support from the National Science Foundation (Grant DMR 1411240). I.D.W.S. acknowledges support from a Royal Society Wolfson research merit award.en
dc.description.abstractConjugated polymers (CPs) are an important class of organic semiconductors that combine novel optoelectronic properties with simple processing from organic solvents. It is important to study CP conformation in solution to understand the physics of these materials and because it affects the properties of solution-processed films. Single-molecule techniques are unique in their ability to extract information on a chain-to-chain basis; however, in the context of CPs, technical challenges have limited their general application to host matrices or semiliquid environments that constrain the conformational dynamics of the polymer. We introduce a conceptually different methodology that enables measurements in organic solvents using the single-end anchoring of polymer chains to avoid diffusion while preserving polymer flexibility. We explore the effect of organic solvents and show that, in addition to chain-to-chain conformational heterogeneity, collapsed and extended polymer segments can coexist within the same chain. The technique enables real-time solvent-exchange measurements, which show that anchored CP chains respond to sudden changes in solvent conditions on a subsecond time scale. Our results give an unprecedented glimpse into the mechanism of solvent-induced reorganization of CPs and can be expected to lead to a new range of techniques to investigate and conformationally manipulate CPs.
dc.relation.ispartofScience Advancesen
dc.rightsCopyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).en
dc.subjectQC Physicsen
dc.subjectQD Chemistryen
dc.subjectQH301 Biologyen
dc.subjectT Technologyen
dc.titleReal-time observation of conformational switching in single conjugated polymer chainsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.contributor.institutionUniversity of St Andrews.Biomedical Sciences Research Complexen
dc.description.statusPeer revieweden

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