Abstract
Herein we describe the self-assembly of an achiral molecule into macroscopic helicity as well as the emergent chiral-selective spin-filtering effect. It was found that a benzene-1,3,5-tricarboxamide (BTA) motif with an aminopyridine group in each arm could coordinate with AgI and self-assemble into nanospheres. Upon sonication, symmetry breaking occurred and the nanospheres transferred into helical nanofibers with strong CD signals. Although the sign of the CD signals appeared randomly, it could be controlled by using the as-made chiral assemblies as a seed. Furthermore, it was found that the charge transport of the helical nanofibers was highly selective with a spin-polarization transport of up to 45 %, although the chiral nanofibers are composed exclusively from achiral building blocks. This work demonstrates symmetry breaking under sonication and the chiral-selective spin-filtering effect.
Original language | English |
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Article number | e202215867 |
Number of pages | 8 |
Journal | Angewandte Chemie - International Edition |
Volume | 62 |
Issue number | 8 |
Early online date | 15 Dec 2022 |
DOIs | |
Publication status | Published - 13 Feb 2023 |
Funding
Funding Information: Y.S. and Q.Z. gratefully acknowledge Prof. Ron Naaman, Weizmann Institute of Science, for helpful discussion. This work was supported by the National Key R&D Program of China (2021YFA1200301), National Natural Science Foundation of China (21890734, 21890730, and 92156018), and Key Research Program of Frontier Sciences, CAS, (QYZDJ‐SSW‐SLH044). Publisher Copyright: © 2022 Wiley-VCH GmbH.
All Science Journal Classification (ASJC) codes
- Catalysis
- General Chemistry