Single-molecule spectroscopy allows fluctuations of conjugated polymer conformation to be monitored during solvent vapour annealing. Dramatic changes in fluorescence behaviour are observed and interpreted in terms of transformations between extended and collapsed polymer geometries.
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Rothberg, L. Watching polymers dance. Nature Chem 3, 425–426 (2011). https://doi.org/10.1038/nchem.1055
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DOI: https://doi.org/10.1038/nchem.1055