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Nat Chem. 2017 Jan;9(1):17-25. doi: 10.1038/nchem.2663. Epub 2016 Nov 21.

Reticular synthesis of porous molecular 1D nanotubes and 3D networks.

Nature chemistry

A G Slater, M A Little, A Pulido, S Y Chong, D Holden, L Chen, C Morgan, X Wu, G Cheng, R Clowes, M E Briggs, T Hasell, K E Jelfs, G M Day, A I Cooper

Affiliations

  1. Department of Chemistry and Materials Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK.
  2. School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK.
  3. Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, UK.

PMID: 27995921 DOI: 10.1038/nchem.2663

Abstract

Synthetic control over pore size and pore connectivity is the crowning achievement for porous metal-organic frameworks (MOFs). The same level of control has not been achieved for molecular crystals, which are not defined by strong, directional intermolecular coordination bonds. Hence, molecular crystallization is inherently less controllable than framework crystallization, and there are fewer examples of 'reticular synthesis', in which multiple building blocks can be assembled according to a common assembly motif. Here we apply a chiral recognition strategy to a new family of tubular covalent cages to create both 1D porous nanotubes and 3D diamondoid pillared porous networks. The diamondoid networks are analogous to MOFs prepared from tetrahedral metal nodes and linear ditopic organic linkers. The crystal structures can be rationalized by computational lattice-energy searches, which provide an in silico screening method to evaluate candidate molecular building blocks. These results are a blueprint for applying the 'node and strut' principles of reticular synthesis to molecular crystals.

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