Issue 23, 2023

From 0 to N: circularly polarized luminescence generation from achiral luminophores in fibrous morphologies

Abstract

Circularly polarized luminescence (CPL) has attracted broad interest due to its potential applications in advanced photonics and electronics. CPL is generally produced from chiral moiety-decorated π-conjugated molecules. Alternatively, CPL can be directly generated from achiral luminescent materials in helical and twisted supramolecular systems, which circumvents the tough and tedious syntheses in traditional methods. In particular, one-dimensional helical supramolecular systems in the fibrous morphology are superior for CPL generation over those in spheroidal or planar structures, because of their high dissymmetry factors (glum). Efforts on one side are focused on the development of helical luminescent fibers with high glum, and on the other side, are directed toward the arrangement of nanofibers to produce scalable materials (films or fibers) with chiral activity. This review summarizes the recent advances in CPL generation from supramolecular systems, illustrating how the chirality transfer, amplification, and regulation of CPL are achieved in fibrous morphologies. Their working mechanisms at hierarchical length scales, including helical fibrous supramolecular assemblies at the nanoscale, chiral films constructed using helically arranged nanofibers at the microscale, and macroscopic fibers via mechanical twisting, are described sequentially. Finally, the current challenges and future opportunities of the chiral systems are also presented.

Graphical abstract: From 0 to N: circularly polarized luminescence generation from achiral luminophores in fibrous morphologies

Article information

Article type
Review Article
Submitted
20 avr. 2023
Accepted
09 mai 2023
First published
15 mai 2023

J. Mater. Chem. C, 2023,11, 7526-7537

From 0 to N: circularly polarized luminescence generation from achiral luminophores in fibrous morphologies

X. Yu, L. Chen, W. Yu, Y. Cheng and M. Zhu, J. Mater. Chem. C, 2023, 11, 7526 DOI: 10.1039/D3TC01404E

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