The University of Southampton
University of Southampton Institutional Repository

Chiral transcription in self-assembled tetrahedral Eu4L6 chiral cages displaying sizable circularly polarized luminescence

Chiral transcription in self-assembled tetrahedral Eu4L6 chiral cages displaying sizable circularly polarized luminescence
Chiral transcription in self-assembled tetrahedral Eu4L6 chiral cages displaying sizable circularly polarized luminescence

Predictable stereoselective formation of supramolecular assembly is generally believed to be an important but complicated process. Here, we show that point chirality of a ligand decisively influences its supramolecular assembly behavior. We designed three closely related chiral ligands with different point chiralities, and observe their self-assembly into europium (Eu) tetrametallic tetrahedral cages. One ligand exhibits a highly diastereoselective assembly into homochiral (either ΔΔΔΔ or ΛΛΛΛ) Eu tetrahedral cages whereas the two other ligands, with two different approaches of loosened point chirality, lead to a significant breakdown of the diastereoselectivity to generate a mixture of (ΔΔΔΔ and ΛΛΛΛ) isomers. The cages are highly emissive (luminescence quantum yields of 16(1) to 18(1)%) and exhibit impressive circularly polarized luminescence properties (|g lum|: up to 0.16). With in-depth studies, we present an example that correlates the nonlinear enhancement of the chiroptical response to the nonlinearity dependence on point chirality.

2041-1723
1-10
Yeung, Chi Tung
45976abd-c545-4bf3-b760-fc3777361875
Yim, King Him
a24aad25-0c68-44cd-a712-8f7da9c7f477
Wong, Ho Yin
5813f36a-dd0b-4e33-a019-9dbfae38d499
Pal, Robert
61b6fa7b-7e05-4206-a041-66b63c477e5a
Lo, Wai Sum
3b752952-9f19-45b5-8e5c-33f56c4cc77f
Yan, Siu Cheong
f71c993f-f531-4fa1-937f-e864e8b366ef
Yee-Man Wong, Melody
f3fc81a9-5015-42c5-9ae1-f26cad826c80
Yufit, Dmitry
d8fe951b-814c-4a41-b4fb-a2bc512c2918
Smiles, Danil E.
c76140d8-190e-4472-be0a-6d24cff800b9
McCormick, Laura J.
f1c2f8cd-adcc-4bbf-9289-0b33a006d2bb
Teat, Simon J.
fd6e6d90-b0c2-4463-91d2-5c72e212d414
Shuh, David K.
47601587-cc94-48ba-9be0-265fb0ce485c
Wong, Wing Tak
5d25e789-ad8f-4cd2-be20-604accfdf28e
Law, Ga Lai
765ae782-95a3-41b0-90f3-8564a3a0c686
Yeung, Chi Tung
45976abd-c545-4bf3-b760-fc3777361875
Yim, King Him
a24aad25-0c68-44cd-a712-8f7da9c7f477
Wong, Ho Yin
5813f36a-dd0b-4e33-a019-9dbfae38d499
Pal, Robert
61b6fa7b-7e05-4206-a041-66b63c477e5a
Lo, Wai Sum
3b752952-9f19-45b5-8e5c-33f56c4cc77f
Yan, Siu Cheong
f71c993f-f531-4fa1-937f-e864e8b366ef
Yee-Man Wong, Melody
f3fc81a9-5015-42c5-9ae1-f26cad826c80
Yufit, Dmitry
d8fe951b-814c-4a41-b4fb-a2bc512c2918
Smiles, Danil E.
c76140d8-190e-4472-be0a-6d24cff800b9
McCormick, Laura J.
f1c2f8cd-adcc-4bbf-9289-0b33a006d2bb
Teat, Simon J.
fd6e6d90-b0c2-4463-91d2-5c72e212d414
Shuh, David K.
47601587-cc94-48ba-9be0-265fb0ce485c
Wong, Wing Tak
5d25e789-ad8f-4cd2-be20-604accfdf28e
Law, Ga Lai
765ae782-95a3-41b0-90f3-8564a3a0c686

Yeung, Chi Tung, Yim, King Him, Wong, Ho Yin, Pal, Robert, Lo, Wai Sum, Yan, Siu Cheong, Yee-Man Wong, Melody, Yufit, Dmitry, Smiles, Danil E., McCormick, Laura J., Teat, Simon J., Shuh, David K., Wong, Wing Tak and Law, Ga Lai (2017) Chiral transcription in self-assembled tetrahedral Eu4L6 chiral cages displaying sizable circularly polarized luminescence. Nature Communications, 8 (1), 1-10, [1128]. (doi:10.1038/s41467-017-01025-1).

Record type: Article

Abstract

Predictable stereoselective formation of supramolecular assembly is generally believed to be an important but complicated process. Here, we show that point chirality of a ligand decisively influences its supramolecular assembly behavior. We designed three closely related chiral ligands with different point chiralities, and observe their self-assembly into europium (Eu) tetrametallic tetrahedral cages. One ligand exhibits a highly diastereoselective assembly into homochiral (either ΔΔΔΔ or ΛΛΛΛ) Eu tetrahedral cages whereas the two other ligands, with two different approaches of loosened point chirality, lead to a significant breakdown of the diastereoselectivity to generate a mixture of (ΔΔΔΔ and ΛΛΛΛ) isomers. The cages are highly emissive (luminescence quantum yields of 16(1) to 18(1)%) and exhibit impressive circularly polarized luminescence properties (|g lum|: up to 0.16). With in-depth studies, we present an example that correlates the nonlinear enhancement of the chiroptical response to the nonlinearity dependence on point chirality.

Text
s41467-017-01025-1 - Version of Record
Available under License Creative Commons Attribution.
Download (1MB)

More information

Accepted/In Press date: 11 August 2017
e-pub ahead of print date: 24 October 2017
Published date: 1 December 2017

Identifiers

Local EPrints ID: 438994
URI: http://eprints.soton.ac.uk/id/eprint/438994
ISSN: 2041-1723
PURE UUID: e769e2bd-6d8b-4299-9c60-984ad50e1771
ORCID for Laura J. McCormick: ORCID iD orcid.org/0000-0002-6634-4717

Catalogue record

Date deposited: 31 Mar 2020 16:31
Last modified: 06 Jun 2024 02:08

Export record

Altmetrics

Contributors

Author: Chi Tung Yeung
Author: King Him Yim
Author: Ho Yin Wong
Author: Robert Pal
Author: Wai Sum Lo
Author: Siu Cheong Yan
Author: Melody Yee-Man Wong
Author: Dmitry Yufit
Author: Danil E. Smiles
Author: Simon J. Teat
Author: David K. Shuh
Author: Wing Tak Wong
Author: Ga Lai Law

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×