Supramolecular chirality induced by a weak thermal force.
basic_science · Level V
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- Record sourced from PubMed, PMID 24651848.
- Also identified by DOI 10.1039/c3sm52322e.
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Abstract
We show that the unexpected chirality of aggregated structures based on an uncharged achiral porphyrin system originates from small temperature gradients that act as an asymmetrical physical perturbation; the consequent thermal force gives rise to the thermophoretic motion of the aggregates. We establish that the induced optical activity can be controlled, and even vanished, by minimizing the thermal force.