Synthesis of Supramolecular A8Bn Miktoarm Star Copolymers by Host-Guest Complexation
Synthesis of Supramolecular A8Bn Miktoarm Star Copolymers by Host-Guest Complexation
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主客体络合合成超分子 A8Bn Miktoarm 星形共聚物
DOI：
10.1002/anie.202219001
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
Takeharu Haino
中科院分区：
文献类型：
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作者：
Natsumi Nitta;Shin-ichi Kihara;Takeharu Haino
我们报道了一种新的合成方法，通过主-客体络合，在具有8个聚苯乙烯链的间苯二甲酸基配位胶囊和具有1个、2个或4个聚丙烯酸甲酯链的4,4 -二乙酰氧基联苯客体分子之间构建了超分子a80 (n= 1,2,4) mitotoarm星形共聚物。通过动态光散射（DLS）、粒径排除色谱（SEC）和扩散有序核磁共振波谱（DOSY）证实了超分子a80 (n= 1,2,4) mitotoarm星形共聚物的形成。差示扫描量热法（DSC）测量表明，mitoarm共聚物是相分离的。a8b4结构的微布朗运动在整体中明显增强，这是由于不混相臂之间存在弱的偏析相互作用。
We report a new synthetic method to construct supramolecular A8Bn(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 A8Bn(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 A8B4structure was markedly enhanced in the bulk due to a weak segregation interaction between the immiscible arms.