期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 3, 页码 1281-1289出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202010696
关键词
coordination-driven self-assembly; helicoid; metallo-polymers; terpyridine; tetraphenylethylene
资金
- Shenzhen University
- University of South Florida
- Tencent Founders Alumni Foundation
This study presents a feasible strategy to construct a new type of metallo-polymer with helicoidal structure through the combination of covalent polymerization and intramolecular coordination-driven self-assembly. The synthesized metallo-polymer with helicoidal structure can interact with double-stranded DNA molecules through electrostatic interactions, and exhibit exclusive right-handedness in the presence of dsDNA through chiral induction.
In this study, we established a feasible strategy to construct a new type of metallo-polymer with helicoidal structure through the combination of covalent polymerization and intramolecular coordination-driven self-assembly. In the design, a tetratopic monomer (M) was prepared with two terminal alkynes in the outer rim for polymerization, and two terpyridines (TPYs) in the inner rim for subsequent folding by selective intramolecular coordination. Then, the linear covalent polymer (P) was synthesized by polymerization of M via Glaser-Hay homocoupling reaction. Finally, intramolecular coordination interactions between TPYs and Zn(II) folded the backbone of P into a right- or left-handed metallo-helicoid (H) with double rims. Owing to multiple positive charges on the inner rim of helicoid, double-stranded DNA molecules (dsDNA) could interact with H through electrostatic interactions. Remarkably, dsDNA allowed exclusive formation of H with right handedness by means of chiral induction.
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