Abstract
Two flexible subcomponents, namely tris(4-formylphenyl)phosphate and tris(2-aminoethyl)amine, are assembled into a tetrapodal [4 + 4] cage depending on the solvent effect. Single-crystal structure analysis reveals that the caivity is surrounded by four phosphate uints. Good selectivity of CO2 adsorption over CH4 is demonstrated by the gas adsorption experiment.
Highlights
IntroductionNamely tris(4-formylphenyl)phosphate and tris(2-aminoethyl)amine, are assembled into a tetrapodal [4 + 4] cage depending on the solvent effect
Two flexible subcomponents, namely tris(4-formylphenyl)phosphate and tris(2-aminoethyl)amine, are assembled into a tetrapodal [4 + 4] cage depending on the solvent effect
Due to the characteristic of self-healing, dynamic covalent chemistry has been demonstrated as a powerful approach to synthesize these sophisticated cages from simple precursors
Summary
Namely tris(4-formylphenyl)phosphate and tris(2-aminoethyl)amine, are assembled into a tetrapodal [4 + 4] cage depending on the solvent effect. As a part of our ongoing research on OMCs, we aim to further investigate and demonstrate that the semi-flexible precursor could satisfy the requirements of different geometrical organic cage assembly. For multi-component systems comprising competitive reactions, increasing the number of reactive ending groups and the flexibility of the amine linker is bound to complicate the self-assembly process. To address this challenge, a solvent-controlled method was tried and applied to simplify the self-assembly process towards the desired OMC in this paper
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