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- Title
Spontaneous Chirality Induction in the Assembly of a Single Layer 2D Network with Switchable Pores.
- Authors
Shen, Bowen; Pan, Chunyu; Feng, Xiaopeng; Kim, Jehan; Sun, Mo; Lee, Myongsoo
- Abstract
Although two‐dimensional (2D) chiral sheet structures are attractive because of their unique chemical and physical properties, single layer 2D chiral network structures with switchable pore interior remain elusive. Here we report spontaneous chirality induction in a single layer 2D network structure formed from the self‐assembly of tetrapod azobenzene molecules. The chirality induction arises from multiple sublayers slipped in a preferred direction in which the sublayer consists of unidentical molecular arrangements in the in‐plane a and b directions, breaking both the plane of symmetry and inversion symmetry. The protruded azobenzene units in the pore interior can be selectively isomerized upon UV irradiation, resulting in a reversible deformation of the chiral pores while maintaining the 2D frameworks. The chiral network can thus selectively entrap one enantiomer from a racemic solution with near perfect enantioselectivity, and then release it upon UV irradiation.
- Subjects
CHEMICAL properties; POROSITY; CHIRALITY; AZOBENZENE
- Publication
Angewandte Chemie, 2023, Vol 135, Issue 18, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202300658