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Polyhedral Oligosilsesquioxanes in Functional Chiral Nanoassemblies
Author(s) -
An Shuguo,
Hao Aiyou,
Xing Pengyao
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202100044
Subject(s) - chirality (physics) , supramolecular chemistry , luminescence , self assembly , supramolecular chirality , molecule , conjugated system , nanotechnology , materials science , chemistry , polymer , organic chemistry , physics , optoelectronics , symmetry breaking , chiral symmetry breaking , quantum mechanics , nambu–jona lasinio model
Incorporation of giant molecular nanoparticles with atomic precision into chiral nanoassemblies facilitates the fabrication of functional ordered phases with supramolecular chirality, which remains mysterious. Reported here is the first example of polyhedral oligosilsesquioxane (POSS) derivatives that self‐assemble into well‐defined chiral nanoassemblies. POSSs were covalently conjugated to N‐terminal aromatic amino acids, which self‐assembled into nanohelices and twists with explicit handedness tuned by solvent polarity. Chiral nanoassemblies showed active chiroptical responses including Cotton effects and circularly polarized luminescence. The chiral systems can bind guest molecules by charge‐transfer interactions, whereby self‐assembled structures, chiroptical activities, and luminescent colors were further modulated. The unique coassembly systems were applied for instant information encryption and storage with multiple luminescent displays. This work offers a new protocol for the design of functional chiral materials of POSS by molecular self‐assembly.