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Ferroelastic Control of the Multicolor Emission from a Triply Doped Organic Crystal
Journal
Journal of the American Chemical Society
Date Issued
2024
Author(s)
Commins, Patrick
Al-Handawi, Marieh B.
Deger, Caner
Polavaram, Srujana
Yavuz, Ilhan
Rezgui, Rachid
Houk, K. N.
Naumov, Panče
Abstract
Emission from crystalline organic solids is often quenched by nonemissive energy-transfer deexcitation processes. While dispersion of fluorophores in polymers or other hosts has been used to enhance the emission intensity, this strategy results in randomization of guest orientation and optical losses at grain boundaries. Here, we report the doping of inherently nonemissive single crystals of anilinium bromide with three fluorescent organic molecules. The doping process equips the crystal with emission characteristics that tune from blue to deep orange. The emission intensity can be reversibly modulated by ferroelastic twinning, which causes the material to function as a multiemissive force sensor. This approach opens up new pathways in the manipulation of emissive properties in organic crystals and may have substantial implications for optoelectronic devices and sensors.
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Sep 16, 2024
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