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Cover Picture: Linking Single-Molecule Blinking to Chromophore Structure and Redox Potentials (ChemPhysChem 4/2012)
Intensity fluctuations of individual fluorophores, also termed blinking, are studied at the single-molecule level by T. Cordes, P. Tinnefeld et al. on p. 931. Therefore, dye molecules of the homologous series of cyanines were immobilized through double-stranded DNA on BSA-coated cover slips. The OFF-times due to radical-ion formation increase for larger chromophore size and correlate with redox potentials. Cover artwork by Christoph Hohmann, Nanosystems Initiative Munich (NIM).