通过主客体络合作用合成超分子 A B 型支化星共聚物。
Synthesis of Supramolecular A B Miktoarm Star Copolymers by Host-Guest Complexation.
机构信息
Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526, Japan.
Department of Chemical Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8527, Japan.
出版信息
Angew Chem Int Ed Engl. 2023 Mar 27;62(14):e202219001. doi: 10.1002/anie.202219001. Epub 2023 Feb 15.
We report a new synthetic method to construct supramolecular A B (n=1, 2, 4) miktoarm star copolymers by host-guest complexation between a resorcinarene-based coordination capsule possessing eight polystyrene chains and 4,4-diacetoxybiphenyl guest molecules that retain one, two or four polymethyl acrylate chains. The formation of the supramolecular A B (n=1, 2, 4) miktoarm star copolymers was confirmed by dynamic light scattering (DLS), size-exclusion chromatography (SEC), and diffusion-ordered NMR spectroscopy (DOSY). Differential scanning calorimetry (DSC) measurements revealed that the miktoarm copolymers were phase-separated in the bulk. The micro-Brownian motion of the A B structure was markedly enhanced in the bulk due to a weak segregation interaction between the immiscible arms.
我们报告了一种新的合成方法，通过具有八个聚苯乙烯链的基于间苯二酚的配位胶囊与保留一个、两个或四个聚甲基丙烯酸酯链的 4,4-二乙酰氧基联苯客体分子之间的主客体络合作用，构建超分子 A B（n=1,2,4）杂臂星型共聚物。超分子 A B（n=1,2,4）杂臂星型共聚物的形成通过动态光散射（DLS）、尺寸排阻色谱（SEC）和扩散有序 NMR 光谱（DOSY）得到证实。差示扫描量热法（DSC）测量表明，共聚物在本体中发生相分离。由于不混溶臂之间的弱分相相互作用，A B 结构的微观布朗运动在本体中显著增强。
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