Chiral Supramolecular Polymer Formed via Host-Guest Complexation of an Octaphosphonate Biscavitand and a Chiral Diammonium Guest

被引：19

作者：

Hamada, Koki ^{[1
]}

Shimoyama, Daisuke ^{[1
]}

Hirao, Takehiro ^{[1
]}

Haino, Takeharu ^{[1
]}

机构：

[1] Hiroshima Univ, Grad Sch Adv Sci & Engn, Dept Chem, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 7398526, Japan

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 2022年 / 95卷 / 04期

关键词：

Cavitand; Supramolecular polymer; Chiral polymer; MOLECULAR-RECOGNITION; CONFIGURATIONAL ANALYSIS; PACKING MATERIALS; AMPLIFICATION; ENCAPSULATION; CONSTRUCTION; CYCLODEXTRIN; ASSEMBLIES; CAVITANDS; BINDING;

D O I：

10.1246/bcsj.20210452

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Chiral supramolecular polymers were constructed through the host-guest complexation of an octaphosphonate biscavitand and a chiral diammonium guest. Isothermal titration calorimetry determined that host-guest complexation was enthalpy-and entropy-favored with high binding constants. Diffusion-ordered NMR spectroscopy and viscometry of the host-guest solution revealed that supramolecular polymerization occurred, which most likely followed a ring-chain mechanism. The cyclic oligomers and the supramolecular polymer chains were visualized by atomic force microscopy. Circular dichroism was observed when the octaphosphonate biscavitand and the chiral diammonium guest were mixed, which suggested that chirally twisted supramolecular polymers were formed.

引用

页码：621 / 627

页数：7

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