ArticleNature communications2026
Cryoelastic and cryochromic organic crystals.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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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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3 authors.
Funding
Abstract
Cryoelastic and cryochromic luminescent organic crystals offer a powerful platform for adaptive photonics and sensing technologies, yet the structural origins of their temperature-dependent color changes remain unclear. This study reveals that flexible naphthalene-based Schiff base single crystals maintain reversible elasticity and crystallinity across the 298-77 K temperature range while exhibiting distinct thermofluorochromic responses: some crystals undergo progressive blue shifts, while others display pronounced red shifts (up to ~92 nm) accompanied by extended excited-state lifetimes. Single-crystal X-ray diffraction reveals fully reversible lattice contraction without disorder, and identifies a correlation between emission shift direction and π⋯π contact area changes. Enhanced overlap strengthens exciton coupling and drives red shifts, while the lack of overlap maintains monomeric blue emission. This structure-property correlation provides geometric descriptors for predicting low-temperature color-changing behavior, enabling temperature-gated optical encryption and low-temperature luminescent sensing technologies based on mechanically robust organic crystals.
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