ArticleChemistry of materials : a publication of the American Chemical Society2026
Photoluminescence of Aramid Nanofibers: The Benefits of Partially Disordered State.
Article in Chemistry of materials : a publication of the American Chemical Society, 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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Abstract
Aramid nanofibers (ANFs) have emerged as promising polymeric building blocks for high-performance composites and porous solids due to their exceptional mechanical, electrical, and thermal properties. In contrast, their optical, and specifically, luminescent properties have remained unexplored because conventional aramid polymers are weak emitters. Here we demonstrate that ANFs can exhibit strong and tunable photoluminescence. ANFs prepared in DMSO-KOH initially exist as fully deprotonated nanofiber dispersions and are nonfluorescent. Gradual protonation induces intense emission accompanied by a blue shift of the photoluminescence maximum from 650 to 510 nm. Quantum-mechanical calculations reveal that protonation increases the HOMO-LUMO gap and converts the dominant relaxation pathway of the optically excited electronic states from the forbidden
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