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Synthesis of Supramolecular A8Bn Miktoarm Star Copolymers by Host-Guest Complexation
被引:6
|作者:
Nitta, Natsumi
[3
]
Kihara, Shin-Ichi
[4
]
Haino, Takeharu
[1
,2
]
机构:
[1] Hiroshima Univ, Grad Sch Adv Sci & Engn, Dept Chem, I-3-1 Kagamiyama, Higashihiroshima, Hiroshima 7398526, Japan
[2] Hiroshima Univ, Int Inst Sustainabil Knotted Chiral Meta Matter S, 2-313 Kagamiyama, Higashihiroshima, Hiroshima 7398527, Japan
[3] Hiroshima Univ, Grad Sch Sci, Dept Chem, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 7398526, Japan
[4] Hiroshima Univ, Dept Chem Engn, Grad Sch Adv Sci & Engn, I-4-1 Kagamiyama, Higashihiroshima, Hiroshima 7398527, Japan
关键词:
Copolymers;
Host-Guest Systems;
Miktoarms;
Molecular Recognition;
Supramolecular Chemistry;
FRAGMENTATION CHAIN TRANSFER;
DENSELY BRANCHED POLYMERS;
TOPOLOGY TRANSFORMATION;
ENCAPSULATION;
POLYMERIZATION;
TERPOLYMERS;
DIVERGENT;
CORE;
DOSY;
D O I:
10.1002/anie.202219001
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
We report a new synthetic method to construct supramolecular A(8)B(n) (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), sizeexclusion 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(8)B(4) structure was markedly enhanced in the bulk due to a weak segregation interaction between the immiscible arms.
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页数:9
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