Materials Science

The Egg-Shaped Crystals That Should Not Be: A Brain-like Texture Combined with Single Crystallinity


We demonstrate here a unique metallo-organic material where the appearance and the internal crystal structure contradict. The egg-shaped (ovoid) crystals have a "brain-like" texture. Although these micro-sized crystals are monodispersed; like fingerprints the grainy surfaces are never alike. Remarkable, our X-ray and electron diffraction studies unexpectedly revealed that these structures are single crystals comprising a continuous coordination network of homochiral hexagonal and triangular channels. By applying different reaction condition, a series of isostructural and monodisperse crystals were obtained having a monodomain appearance. These results indicate that families of isostructural crystals following the established rules for crystal growth contain hidden gems to be discovered with fascinating multidomain morphologies.

Version notes

This manuscript is version 1


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Supplementary material

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Movie S2
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Movie S1