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首页> 外文期刊>Chemistry: A European journal >Supramolecular polymerization at low monomer concentrations: Enhancing intermolecular interactions and suppressing cyclization by rational molecular design
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Supramolecular polymerization at low monomer concentrations: Enhancing intermolecular interactions and suppressing cyclization by rational molecular design

机译：低单体浓度下的超分子聚合：通过合理的分子设计增强分子间的相互作用并抑制环化

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摘要

We present the construction of long-chain water-soluble supramolecular polymers at low monomer concentrations. Naphthalene-based host-enhanced π-π interactions, which possess high binding constants, were used as the driving force of supramolecular polymerization. A monomer, DNDAB, with a rigid, bulky 1,4-diazabicyclo[2.2.2]octane-1,4-diium linker was designed. The design of the monomer structure strongly influenced the efficiency of the supramolecular polymerization. The rigid, bulky linker in DNDAB effectively eliminates cyclization, promoting the formation of long-chain supramolecular polymers at low monomer concentrations. In contrast, a reference monomer containing a flexible linker (DNPDN) only forms oligomers owing to cyclization. Chaining up naphthalene: Long-chain water-soluble supramolecular polymers have been constructed at low monomer concentrations (see scheme). Naphthalene-based host-enhanced π-π interactions are used as the driving force of the supramolecular polymerization and the monomer structure strongly influences the efficiency of the supramolecular polymerization.
机译：我们提出了低单体浓度下长链水溶性超分子聚合物的构建。具有高结合常数的基于萘的主体增强型π-π相互作用被用作超分子聚合的驱动力。设计了具有刚性大体积的1,4-二氮杂双环[2.2.2]辛烷-1,4-二铵连接基的单体DNDAB。单体结构的设计极大地影响了超分子聚合的效率。 DNDAB中刚性大的连接基有效消除了环化作用，促进了低单体浓度下长链超分子聚合物的形成。相反，含有柔性接头（DNPDN）的参比单体由于环化作用仅形成低聚物。萘的链结：长链水溶性超分子聚合物是在低单体浓度下构建的（请参见方案）。基于萘的主体增强型π-π相互作用用作超分子聚合的驱动力，单体结构强烈影响超分子聚合的效率。

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