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Hierarchically Chiral Lattice Self-Assembly Induced Circularly Polarized Luminescence
journal contribution
posted on 2020-03-10, 19:59 authored by Jiaqi Liang, Peipei Guo, Xujin Qin, Xiaohui Gao, Kai Ma, Xuefeng Zhu, Xue Jin, Weiwei Xu, Lingxiang Jiang, Pengfei DuanBiomaterials
in nature often exhibit hierarchical chiral structures
with an intriguing mechanism involving hierarchical chirality transfer
from molecular to supramolecular and the nano- or microscale level.
To mimic the cross-level chirality transfer, we present here one kind
of host–guest complex system built of β-cyclodextrin
(β-CD), sodium dodecyl sulfate (SDS), and fluorescent dyes,
which show multilevel chirality, including molecular chirality of
β-CD, induced supramolecular chirality of β-CD/SDS host–guest
complexes, a chiral lattice self-assembled nanosheet, mesoscopic chirality
of an assembled helical tube, induced chirality of a dye-doped chiral
tube. The hierarchical chirality involved a chiral lattice self-assembly
process, which can be identified by small-angle X-ray scattering,
optical studies, circular dichroism, and circularly polarized luminescence
spectral measurements. Benefiting from the chiral lattice self-assembly,
intense circularly polarized luminescence was observed from the achiral
dye-doped complexes with a large dissymmetry factor up to +0.1. This
work thus provides a feasible insight for developing hierarchical
chiroptical materials based on the lattice self-assembly.
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dye-doped chiral tubemesoscopic chiralityHierarchically Chiral Lattice Self-Assembly Induced Circularly Polarized Luminescence Biomaterialsachiral dye-doped complexeslattice self-assemblychiral lattice self-assembly processchiral lattice self-assembled nanosheetdissymmetry factorcross-level chirality transfersupramolecular chiralitymicroscale levelchiral structuresβ- CDchiroptical materialsSDShelical tubechirality transferchiral lattice self-assemblysmall-angle X-ray
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