TY - JOUR
T1 - Topological-skeleton controlled chirality expression of supramolecular hyperbranched and linear polymers
AU - Song, Xin
AU - Zhu, Xuefeng
AU - Yao, Hao
AU - Shang, Weili
AU - Du, Cong
AU - Lu, Wensheng
AU - Liu, Minghua
AU - Tian, Wei
N1 - Publisher Copyright:
© 2021
PY - 2022/5
Y1 - 2022/5
N2 - The topology of polymers plays an essential role in their chemical, physical and biological properties. However, their effects on chirality-related functions remain unclear. Here, we reported the topology-controlled chirality expression in the chiral supramolecular system for the first time. Two topological supramolecular polymers, hyperbranched (HP) and linear (LP) supramolecular polymers produced by the host–guest interactions of branched and linear monomers, respectively, exhibited completely different chirality expressions despite the same molecular chirality of their monomers. Significantly, due to the branch points and strong steric hindrance existing in HP, cis-HP showed an enhanced and sign-inverted Cotton effect in the n–π* bands compared with cis-LP, as a result that the distinctive chirality induction and transfer were controlled by the topological skeletons. This topology-controlled chirality induction and transfer in the photoswitchable supramolecular polymers not only enables us to elucidate the in-depth effects of topology on the chiral expression in biopolymers but also inspires the design of chiroptical and bioinspired materials.
AB - The topology of polymers plays an essential role in their chemical, physical and biological properties. However, their effects on chirality-related functions remain unclear. Here, we reported the topology-controlled chirality expression in the chiral supramolecular system for the first time. Two topological supramolecular polymers, hyperbranched (HP) and linear (LP) supramolecular polymers produced by the host–guest interactions of branched and linear monomers, respectively, exhibited completely different chirality expressions despite the same molecular chirality of their monomers. Significantly, due to the branch points and strong steric hindrance existing in HP, cis-HP showed an enhanced and sign-inverted Cotton effect in the n–π* bands compared with cis-LP, as a result that the distinctive chirality induction and transfer were controlled by the topological skeletons. This topology-controlled chirality induction and transfer in the photoswitchable supramolecular polymers not only enables us to elucidate the in-depth effects of topology on the chiral expression in biopolymers but also inspires the design of chiroptical and bioinspired materials.
KW - Host–guest interaction
KW - Photoisomerization
KW - Supramolecular chirality
KW - Supramolecular polymer
KW - Topological skeleton
UR - http://www.scopus.com/inward/record.url?scp=85121250634&partnerID=8YFLogxK
U2 - 10.1016/j.fmre.2021.10.006
DO - 10.1016/j.fmre.2021.10.006
M3 - 文章
AN - SCOPUS:85121250634
SN - 2667-3258
VL - 2
SP - 422
EP - 428
JO - Fundamental Research
JF - Fundamental Research
IS - 3
ER -