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  • Boron‐Nitrogen Lewis Pairs ...
    Chen, Beijia; Jäkle, Frieder

    Angewandte Chemie, January 15, 2024, Volume: 63, Issue: 3
    Journal Article

    Covering an exceptionally wide range of bond strengths, the dynamic nature and facile tunability of dative B−N bonds is highly attractive when it comes to the assembly of supramolecular polymers and materials. This Minireview offers an overview of advances in the development of functional materials where Lewis pairs (LPs) play a key role in their assembly and critically influence their properties. Specifically, we describe the reversible assembly of linear polymers with interesting optical, electronic and catalytic properties, discrete macrocycles and molecular cages that take up diverse guest molecules and undergo structural changes triggered by external stimuli, covalent organic frameworks (COFs) with intriguing interlocked structures that can embed and separate gases such as CO2 and acetylene, and soft polymer networks that serve as recyclable, self‐healing, and responsive thermosets, gels and elastomeric materials. Boron‐nitrogen Lewis pairs (LPs) serve as versatile motifs that not only facilitate self‐assembly but also endow macromolecules with unique characteristics. The dynamic nature of the dative bonding is exploited in the generation of new macrocycles, molecular cages, 1D polymers, and 3D networks with interesting optical and electronic properties, host–guest characteristics, stimuli‐responsiveness, and shape‐shifting properties.