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Dynamic control of chirality and self-assembly of double-stranded helicates with light

Zhao, D., van Leeuwen, T., Cheng, J. & Feringa, B. L., Mar-2017, In : Nature Chemistry. 9, 3, p. 250-256 7 p.

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  • Dynamic control of chirality and self

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DOI

Helicity switching in biological and artificial systems is a fundamental process that allows for the dynamic control of structures and their functions. In contrast to chemical approaches to responsive behaviour in helicates, the use of light as an external stimulus offers unique opportunities to invert the chirality of helical structures in a non-invasive manner with high spatiotemporal precision. Here, we report that unidirectional rotary motors with connecting oligobipyridyl ligands, which can dynamically change their chirality upon irradiation, assemble into metal helicates that are responsive to light. The motor function controls the self-assembly process as well as the helical chirality, allowing switching between oligomers and double-stranded helicates with distinct handedness. The unidirectionality of the light-induced motion governs the sequence of programmable steps, enabling the highly regulated self-assembly of fully responsive helical structures. This discovery paves the way for the future development of new chirality-dependent photoresponsive systems including smart materials, enantioselective catalysts and light-driven molecular machines.

Original languageEnglish
Pages (from-to)250-256
Number of pages7
JournalNature Chemistry
Volume9
Issue number3
Publication statusPublished - Mar-2017

    Keywords

  • CONFORMATIONAL COMMUNICATION, REMOTE STEREOCONTROL, MOLECULAR MOTOR, METAL-COMPLEXES, TWIST SENSE, LIGANDS, DRIVEN, COPPER(I), FOLDAMER, TRANSMISSION

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