ArticleChemistry (Weinheim an der Bergstrasse, Germany)2021
Helicity Control in the Aggregation of Achiral Squaraine Dyes in Solution and Thin Films.
Article in Chemistry (Weinheim an der Bergstrasse, Germany), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- The chirality-induced spin selectivity effect in asymmetric spin transport: from solution to device applications.Chemical science · 2024Review
- Rotational Isomerism of an Amide Substituted Squaraine Dye: A Combined Spectroscopic and Computational Study.The Journal of organic chemistry · 2021Article
- Helicity Control in the Aggregation of Achiral Squaraine Dyes in Solution and Thin Films.Chemistry (Weinheim an der Bergstrasse, Germany) · 2021Article
- The Importance of Spin State in Chiral Supramolecular Electronics.Frontiers in chemistry · 2021Review
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Squaraine dyes are well known for their strong absorption in the visible regime. Reports on chiral squaraine dyes are, however, scarce. To address this gap, we here report two novel chiral squaraine dyes and their achiral counterparts. The presented dyes are aggregated in solution and in thin films. A detailed chiroptical study shows that thin films formed by co-assembling the chiral dye with its achiral counterpart exhibit exceptional photophysical properties. The circular dichroism (CD) of the co-assembled structures reaches a maximum when just 25 % of the chiral dye are present in the mixture. The solid structures with the highest relative CD effect are achieved when the chiral dye is used solely as a director, rather than the structural component. The chiroptical data are further supported by selected spin-filtering measurements using mc-AFM. These findings provide a promising platform for investigating the relationship between the dissymmetry of a supramolecular structure and emerging material properties rather than a comparison between a chiral molecular structure and an achiral counterpart.
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