Temperature-Sensitive Transitions below LCST in Amphiphilic Dendritic Assemblies: Host–Guest Implications
摘要:
Oligo(ethylene glycol)-decorated supramolecular assemblies have been of great interest due to their charge-neutral character and thus their propensity to avoid nonspecific interactions. These systems are known to exhibit a macroscopic temperature-sensitive transition, where the assembly phase-separates from the aqueous phase at higher temperatures. Mile this so-called lower critical solution temperature (LCST) behavior has been well-studied, there have been no studies on the fate of these supramolecular assemblies below this transition temperature. The work here brings to light the presence of a second, sub-LCST transition, observed well below the LCST of oligo(ethylene glycol) (OEG)-based dendrons, where the host guest properties of the assembly are significantly altered. This sub-LCST transition is accompanied by changes in the guest encapsulation stability and dynamics of host exchange.
对蛋白质存在作出反应的超分子纳米组件引起了人们极大的兴趣,因为蛋白质浓度的畸变代表了在患病状态下发现的主要不平衡。我们在此介绍了对蛋白质、免疫球蛋白 G 的存在作出反应的面部两亲性树枝状聚合物的分子设计、合成和研究。 特别令人感兴趣的是,用于引起结合诱导分解的配体功能是亲脂性的。与亲脂性配体结合的证明极大地扩展了结合诱导分解的全部内容,因为这涵盖了相当大类为蛋白质设计的配体部分,这些配体部分提供了对结合诱导分解过程可用的机制途径的具体见解。这里,