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Visible-Light Excitation of a Molecular Motor with an Extended Aromatic Core.

ABSTRACT: Exploring routes to visible-light-driven rotary motors, the possibility of red-shifting the excitation wavelength of molecular motors by extension of the aromatic core is studied. Introducing a dibenzofluorenyl moiety in a standard molecular motor resulted in red-shifting of the absorption spectrum. UV/vis and ¹H NMR spectroscopy showed that these motors could be isomerized with light of wavelengths up to 490 nm and that the structural modification did not impair the anticipated rotary behavior. Extension of the aromatic core is therefore a suitable strategy to apply in pursuit of visible-light-driven molecular motors.

SUBMITTER: van Leeuwen T

PROVIDER: S-EPMC5359586 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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Visible-Light Excitation of a Molecular Motor with an Extended Aromatic Core.

van Leeuwen Thomas T Pol Jasper J Roke Diederik D Wezenberg Sander J SJ Feringa Ben L BL

Organic letters 20170301 6

Exploring routes to visible-light-driven rotary motors, the possibility of red-shifting the excitation wavelength of molecular motors by extension of the aromatic core is studied. Introducing a dibenzofluorenyl moiety in a standard molecular motor resulted in red-shifting of the absorption spectrum. UV/vis and <sup>1</sup>H NMR spectroscopy showed that these motors could be isomerized with light of wavelengths up to 490 nm and that the structural modification did not impair the anticipated rotar ...[more]

PMID: 28248510

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