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Ulrich Mayerhöffer and Prof. Dr. Frank Würthner Halogen–Arene Interactions Assist in Self-Assembly of Dyes Angewandte Chemie International Edition 51

Version of Record online: 23 APR 2012 | DOI: 10.1002/anie.201200897

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The “dye” is cast: An isodesmic self-assembly process of near-infared-absorbing, acceptor-substituted squaraine dyes, assisted by halogen–halogen and halogen–arene interactions, is observed in toluene. The aggregation process was monitored by UV/Vis/NIR absorption and NMR experiments, thus providing insight into the structural features (see figure; O red, I violet, N blue) as well as the binding strengths of the formed aggregates.

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