ArticleAngewandte Chemie (International ed. in English)2026
Monolithic Porous Polymer Architectures for Visible-to-UV Upconversion-Driven Photochemical Reactions.
Article in Angewandte Chemie (International ed. in English), 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
Triplet-triplet annihilation-based photon upconversion (TTA-UC) expands the accessible spectral window for photochemical transformations by generating high-energy photons from low-energy excitation. Although TTA-UC has been widely demonstrated in solution and in various solid-state formats, examples of polymer materials capable of efficient visible-to-ultraviolet (vis-to-UV) upconversion under low excitation intensities remain scarce. Achieving vis-to-UV TTA-UC in a porous solid is particularly challenging because it requires balancing chromophore proximity for TTA with the suppression of aggregation-induced quenching, while simultaneously preserving substrate accessibility. Here, we introduce porous polymer monoliths that enable solid-state TTA-UC specifically designed for heterogeneous photochemistry. By embedding sensitizer-annihilator dye pairs into polymer matrices with controlled co-continuous porosity, we create monolithic architectures that display upconverted UV emission from blue light at excitation intensities below a few mW cm
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