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Light-driven flagella-like motion of coordination compound single crystals

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  • Akansha Ekka
  • Uma Kurakula
  • Aditya Choudhury
  • Anshumika Mishra
  • Anshul Faye
  • Nathan R. Halcovitch
  • Raghavender Medishetty
<mark>Journal publication date</mark>14/04/2023
<mark>Journal</mark>Chemical Communications
Issue number29
Number of pages4
Pages (from-to)4384-4387
Publication StatusPublished
Early online date22/03/23
<mark>Original language</mark>English


Single crystals of coordination complexes that show mechanical motion under the influence of external stimuli are of great interest due to their applications in photoactuators, sensors and probes. The solid-state [2+2] cycloaddition reaction has been one of the most prominent chemical reactions for photoresponsive materials in recent years. However, a relatively limited number of compounds have been reported, and most of these compounds have only shown destructive photosalient effects. Here, we report two photoreactive Zn(II) metal complexes with a thiophene-based photoreactive linker, 2tpy (4-(2-(thiophen-2-yl)vinyl)pyridine). In addition, under photoirradiation these complexes showed flagella-like bending, first towards and subsequently away from the excitation light source. This is the first report of metal-complexes and the solid-state [2+2] cycloaddition reaction that presents flagella-like motion in single crystals.