Supramolecular Self-Sorting Networks using Hydrogen-Bonding Motifs

Chemistry. 2019 Jan 14;25(3):785-795. doi: 10.1002/chem.201804791. Epub 2018 Dec 13.

Abstract

A current objective in supramolecular chemistry is to mimic the transitions between complex self-sorted systems that represent a hallmark of regulatory function in nature. In this work, a self-sorting network, comprising linear hydrogen motifs, was created. Selecting six hydrogen-bonding motifs capable of both high-fidelity and promiscuous molecular recognition gave rise to a complex self-sorting system, which included motifs capable of both narcissistic and social self-sorting. Examination of the interactions between individual components, experimentally and computationally, provided a rationale for the product distribution during each phase of a cascade. This reasoning holds through up to five sequential additions of six building blocks, resulting in the construction of a biomimetic network in which the presence or absence of different components provides multiple unique pathways to distinct self-sorted configurations.

Keywords: biomimetic chemistry; hydrogen bonding; molecular recognition; self-sorting; supramolecular chemistry.