Inversion of Supramolecular Helicity in Oligo‐p‐phenylene‐Based Supramolecular Polymers: Influence of Molecular Atropisomerism |
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| Authors: | Fátima Aparicio Belén Nieto‐Ortega Francisco Nájera Francisco J. Ramírez Juan T. López Navarrete Juan Casado Luis Sánchez |
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| Affiliation: | 1. Departamento de Química Orgánica, Facultad de Ciencias Químicas, Ciudad Universitaria s/n, 28040 Madrid (Spain);2. Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos s/n, 29071 Málaga (Spain);3. Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos s/n, 29071 Málaga (Spain) |
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| Abstract: | The helical organization of oligo‐p‐phenylene‐based organogelators has been investigated by atomic force microscopy, circular and vibrational circular dichroism, and Raman techniques. Whilst OPPs with more than two phenyl rings in the core self‐assemble into left‐handed helices, that with a biphenyl core shows an inversion of the supramolecular helicity depending on the formation conditions through the atropisomerism of the biphenyl central unit. The results presented herein outline a new example of kinetically controlled modulation of supramolecular helicity. |
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| Keywords: | atropisomerism chirality helical structures self‐assembly supramolecular polymers |
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