ArticleAngewandte Chemie (International ed. in English)2022
Spatiotemporal Mapping of Efficient Chiral Induction by Helicene-Type Additives in Copolymer Thin Films.
Article in Angewandte Chemie (International ed. in English), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Bromo-Heptahelicene-Bis-Thiadiazole: Photophysics, Chiroptics, and Excited-State Dynamics.Chemphyschem : a European journal of chemical physics and physical chemistry · 2025Article
- Photoinduced Dynamics of [N(CChemphyschem : a European journal of chemical physics and physical chemistry · 2025Article
- Enantiopure synthesis of [5]helicene based molecular lemniscates and their use in chiroptical materials.Nature communications · 2025Article
- Annealing temperature-dependent induced supramolecular chiroptical response of copolymer thin films studied by pump-modulated transient circular dichroism spectroscopy.Scientific reports · 2024Article
- Excited-State Dynamics of Bis(tetraethylammonium) Di-µ-bromo-dibromodicuprate(I) Thin Films.Molecules (Basel, Switzerland) · 2023Article
- Spatiotemporal Mapping of Efficient Chiral Induction by Helicene-Type Additives in Copolymer Thin Films.Angewandte Chemie (International ed. in English) · 2022Article
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5 authors.
Funding
Abstract
We observed efficient induction of chirality in polyfluorene copolymer thin films by mixing with helicene-type chiral additives based on the dibenzo[c,h]acridine motif. Images obtained from circular dichroism (CD) and circularly polarized luminescence (CPL) microscopy provide information about the chiral arrangements in the thin films with diffraction-limited resolution. The CD signal shows a characteristic dependence on the film thickness, which supports a supramolecular origin of the strong chiral response of the copolymer. In particular, we demonstrate the discrimination between films of opposite chirality based on their ultrafast transient chiral response through the use of femtosecond broadband CD spectroscopy and a newly developed setup for transient CPL spectroscopy with 28 ps time resolution. A systematic variation of the enantiomeric excess of the chiral additive shows that the "Sergeants and Soldiers" concept and "Majority Rules" are not obeyed.
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