Chemistry

Competing Twists: How Dual Chirality Controls Electron Spin in Molecular Helices

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This study investigates how chirality-induced spin selectivity (CISS) operates in supramolecular helices that possess dual sources of chirality - both molecular and supramolecular. The researchers found that these two levels of chirality can either work synergistically to enhance spin selectivity or compete with each other to reduce it, depending on whether they have matching or opposing handedness. The work demonstrates that controlling multiple chiral elements in a single system allows for tunable spin filtering effects.


Understanding how multiple chiral elements interact to affect spin transport could enable the development of more efficient spintronic devices and molecular electronics. This could lead to improved data storage, quantum computing components, and sensors that exploit the relationship between molecular structure and electron spin.


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Journal of the American Chemical Society
DOI: 10.1021/jacs.6c03497

Source: [ASAP] Synergy and Competition of Dual Chirality in the Chirality-Induced Spin Selectivity of Supramolecular Helices