ArticleNature communications2025
Halogen bond-modulated solid-state reordering and symmetry breaking of azahelicenes.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed.
- Tuning Supramolecular Structure in Trimethylglycine Cocrystals: Competition Between Hydrogen and Halogen Bonding upon Cl/Br Substitution.Molecules (Basel, Switzerland) · 2026Article
- Beyond Cocrystals: Hierarchical Functional Assemblies via Noncovalent Synthesis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Review
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
Spontaneous symmetry breaking predominately occurs during the aggregation of discrete molecules in solution. Herein, we report a unique solid-state symmetry breaking process of dynamically chiral aza[4]helicenes that emerged in vacuum-driven transformation of halogen bond-woven crystals. Due to the weak feature of the halogen bonding, the halides in the cocrystals can be completely removed under vacuum at an elevated temperature. Interestingly, the aza[4]helicene molecules released from the halogen bond network solely adopt one chiral conformation upon reordering and symmetry breaking instantly occurs in a solid state. The Cotton effects gradually increase with the extension of vacuum-heating treatment, indicating a unidirectional transformation of the chiral conformations and an amplification of symmetry breaking during the solid-state reorganization. Moreover, the use of aza[6]helicene as a chiral inducer further enables a precise manipulation for the absolute configuration of the solid-state symmetry breaking, paving a distinctive route to chiral organic materials from achiral/racemic precursors.
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Registered trials
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