Biased Symmetry Breaking in the Formation of Intercalated Layered Double Hydroxides: toward Control of Homochiral Supramolecular Assembly

被引：3

作者：

Shi, Wenying ^{[1
]}

Liang, Kaixiang ^{[1
]}

Wang, Ruixing ^{[1
]}

Liu, Jing ^{[1
]}

Lu, Chao ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, POB 98,15 Beisanhuan East Rd, Beijing 100029, Peoples R China

来源：

SMALL | 2023年 / 19卷 / 44期

基金：

中国国家自然科学基金;

关键词：

biased symmetry breaking; chiral selections; homochiral supramolecular assembly; planar achiral monomers; the synergy of confinement and vortex; INDUCTION; CHIRALITY; POLYMERIZATION; VORTICES; POLYMERS;

D O I：

10.1002/smll.202303497

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Homochiral supramolecular assembly (HSA) based on achiral molecules has provided important clues to understand the origin of biological homochirality from the aspect of symmetry breaking. However, planar achiral molecules still face the challenge of forming HSA due to the lack of driving force for twisted stacking, which is a prerequisite for homochirality. Here, with the benefit of the formation of 2D intercalated layered double hydroxide (LDH, host-guest nanomaterials) in vortex motion, planar achiral guest molecules can form the chiral units with spatially asymmetrical structure in the confinement space of LDH. Once the LDH is removed, these chiral units are in a thermodynamic non-equilibrium state, which can be amplified to HSA by self-replicating. Especially, the homochiral bias can be predicted in advance by controlling the vortex direction. Therefore, this study breaks the bottleneck of complicated molecular design and provides a new technology to achieve HSA made of planar achiral molecules with definite handedness.

引用

页数：8