期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 15, 页码 18047-18055出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c03940
关键词
supramolecular co-assembly; chirality inversion; stoichiometry; cooling rate; metal ions
资金
- National Natural Science Foundation of China [21774007, 22005021]
- Beijing Natural Science Foundation [2202043]
- Fundamental Research Funds for the Central Universities [PT1811]
The study focuses on constructing chiroptical materials with controllable chirality by co-assembling chiral alanine derivative and fluorescent cyanostilbene derivative to prepare supramolecular chiral systems. The research successfully demonstrates the modulation of supramolecular chirality and circularly polarized luminescence by altering cooling rate and incorporating metal ions, with a mechanism involving synergistic effects among different interactions.
The construction of chiroptical materials with controllable chirality is of special importance in biology and chemistry. Although tunable chirality can be realized in various systems, it remains a fundamental challenge to realize multimodulated chiral inversion. Herein, we report that chiral alanine derivative and fluorescent cyanostilbene derivative co-assemble to prepare supramolecular chiral systems, where twist nanofibers with totally inverted supramolecular chirality and circularly polarized luminescence are obtained through stoichiometric modulation. The supramolecular handedness can be inverted by means of altering the cooling rate and incorporating metal ions. The mechanism study reveals that the synergistic effect among hydrogen bonds, coordination interactions, and pi-pi stacking interactions contributes to the chirality inversion. This work establishes an effective strategy to precisely modulate supramolecular chirality in multiple ways, which shows great potential in developing smart chiroptical materials capable of achieving complex functionalities.
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