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Solvent polarity driven helicity inversion and circularly polarized luminescence in chiral aggregation induced emission fluorophores

Development of functional materials capable of exhibiting chirality tunable circularly polarized luminescence (CPL) is currently in high demand for potential technological applications. Herein we demonstrate the formation of both left- and right-handed fluorescent helical superstructures from each e...

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Autores principales: Ye, Qiang, Zheng, Feng, Zhang, Enqi, Bisoyi, Hari Krishna, Zheng, Shuyuan, Zhu, Dandan, Lu, Qinghua, Zhang, Hailiang, Li, Quan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8162095/
https://www.ncbi.nlm.nih.gov/pubmed/34094262
http://dx.doi.org/10.1039/d0sc04179c
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author Ye, Qiang
Zheng, Feng
Zhang, Enqi
Bisoyi, Hari Krishna
Zheng, Shuyuan
Zhu, Dandan
Lu, Qinghua
Zhang, Hailiang
Li, Quan
author_facet Ye, Qiang
Zheng, Feng
Zhang, Enqi
Bisoyi, Hari Krishna
Zheng, Shuyuan
Zhu, Dandan
Lu, Qinghua
Zhang, Hailiang
Li, Quan
author_sort Ye, Qiang
collection PubMed
description Development of functional materials capable of exhibiting chirality tunable circularly polarized luminescence (CPL) is currently in high demand for potential technological applications. Herein we demonstrate the formation of both left- and right-handed fluorescent helical superstructures from each enantiomer of a chiral tetraphenylethylene derivative through judicious choice of the solution processing conditions. Interestingly, both the aggregation induced emission active enantiomers exhibit handedness inversion of their supramolecular helical assemblies just by varying the solution polarity without any change in their molecular chirality. The resulting helical supramolecular aggregates from each enantiomer are capable of emitting circularly polarized light, thus enabling both right- and left-handed CPL from a single chiral material. The left- and right-handed supramolecular helical aggregates in the dried films have been characterized using spectroscopy, scanning electron microscopy, and transmission electron microscopy techniques. These new chiral aggregation induced emission compounds could find applications in devices where CPL of opposite handedness is required from the same material and would facilitate our understanding of the formation of helical assemblies with switchable supramolecular chirality.
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spelling pubmed-81620952021-06-04 Solvent polarity driven helicity inversion and circularly polarized luminescence in chiral aggregation induced emission fluorophores Ye, Qiang Zheng, Feng Zhang, Enqi Bisoyi, Hari Krishna Zheng, Shuyuan Zhu, Dandan Lu, Qinghua Zhang, Hailiang Li, Quan Chem Sci Chemistry Development of functional materials capable of exhibiting chirality tunable circularly polarized luminescence (CPL) is currently in high demand for potential technological applications. Herein we demonstrate the formation of both left- and right-handed fluorescent helical superstructures from each enantiomer of a chiral tetraphenylethylene derivative through judicious choice of the solution processing conditions. Interestingly, both the aggregation induced emission active enantiomers exhibit handedness inversion of their supramolecular helical assemblies just by varying the solution polarity without any change in their molecular chirality. The resulting helical supramolecular aggregates from each enantiomer are capable of emitting circularly polarized light, thus enabling both right- and left-handed CPL from a single chiral material. The left- and right-handed supramolecular helical aggregates in the dried films have been characterized using spectroscopy, scanning electron microscopy, and transmission electron microscopy techniques. These new chiral aggregation induced emission compounds could find applications in devices where CPL of opposite handedness is required from the same material and would facilitate our understanding of the formation of helical assemblies with switchable supramolecular chirality. The Royal Society of Chemistry 2020-08-17 /pmc/articles/PMC8162095/ /pubmed/34094262 http://dx.doi.org/10.1039/d0sc04179c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Ye, Qiang
Zheng, Feng
Zhang, Enqi
Bisoyi, Hari Krishna
Zheng, Shuyuan
Zhu, Dandan
Lu, Qinghua
Zhang, Hailiang
Li, Quan
Solvent polarity driven helicity inversion and circularly polarized luminescence in chiral aggregation induced emission fluorophores
title Solvent polarity driven helicity inversion and circularly polarized luminescence in chiral aggregation induced emission fluorophores
title_full Solvent polarity driven helicity inversion and circularly polarized luminescence in chiral aggregation induced emission fluorophores
title_fullStr Solvent polarity driven helicity inversion and circularly polarized luminescence in chiral aggregation induced emission fluorophores
title_full_unstemmed Solvent polarity driven helicity inversion and circularly polarized luminescence in chiral aggregation induced emission fluorophores
title_short Solvent polarity driven helicity inversion and circularly polarized luminescence in chiral aggregation induced emission fluorophores
title_sort solvent polarity driven helicity inversion and circularly polarized luminescence in chiral aggregation induced emission fluorophores
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8162095/
https://www.ncbi.nlm.nih.gov/pubmed/34094262
http://dx.doi.org/10.1039/d0sc04179c
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