Abstract:In recent years, boron-containing macrocycles have received considerable research interest. This review summarizes the reported examples of boron macrocycles containing alkyl/aryl borane units, B-O bonds, and B-N bonds. The synthesis...
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.
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.
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.
Oxa-TriQuinoline (o-TQ) is a new entry in the collection of aza-oxa-crown compounds featuring a semi-rigid flexible conformation and a tripodal ligation capability through three quinoline units. Herein, we describe the installation of functional groups and aromatic substituents on the outer edge of o-TQ to modulate its physicochemical properties. Amino and bromo substituents were regioselectively introduced at the 5-position, forming bowl-shaped Cu(I) complexes in which three quinoline units coordinated to Cu(I). X-ray crystallography indicated that these o-TQ derivatives preferred an almost identical geometry in both the absence and presence of Cu(I). In contrast to o-TQ, some new o-TQ derivatives exhibited photoluminescent properties in solution and/or in the solid state depending on the substituents.
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