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Key numbers

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• stable Zr−O clusters, enables triplet exciton migration while maintaining high photo- and chemical-stability. Upon 445 nm
• light (∼5%), necessitating the development of efficient
• efficient to date (27.6%), based on the TIPS-Nph/Ir-
• et al., and Murakami et al., have also proposed alternative (ηUC) of 1.95% by using a Zn-MOF (Figure 1b).19 However,
• UC.49,54−56 However, homogeneous vis-to-UV TTA-UC photocatalysis remain unexplored (Table S6).
• controlled TTA-UC in solution is inherently unsuitable for dicarboxylic acid linker (TP-(COOH)2). The resulting hybrid
• known, highly stable ‘UiO’ family also facilitates the synthesis activated TP-MOF and Ir-TP-MOF100 are 1392 and 1146
• refinement of the slow-scan PXRD data for Ir-TP-MOF100 framework maintains its structural integrity across a wide range
• The tetrahedral pores arise from assemblies of four Zr6 inside an Ar-filled glovebox (O2 < 0.1 ppm). The UV−vis
• Ir-TP-MOF100 retained its crystallinity after solvent removal and 1.22 μs, respectively (Figure S20 and Table S2). TP-
• The successful formation of coordination bonds between the unity fluorescent quantum yield (Figure S21, Table S2). Upon
• coordination bonds between Zr(IV) and the carboxylate 66.1% was still maintained in the MOF (Table S2).
• solvent phase. Notably, in situ incorporation of Ir(dFppy- Ir-TP-MOF200 were 49.9, 46.4, and 52.2%, respectively (Table
• Meanwhile, as the Ir(dFppy-COOH)3 loading in MOF the observed TET efficiency for all the UC-MOFs is relatively
• suspensions exhibited pronounced upconverted emission in TTA saturation and resulting in the lowest ηUC of 0.09%.
• (ΦUC) is limited to 50%. For ease of comparison across trend suggests that increasing sensitizer concentration may
• systems, this value is typically normalized to 100% by defining promote triplet back energy transfer, consistent with our
• determined ΦUC. The measured ηUC for Ir-TP-MOF50, Ir-TP- λdetection = 500 nm) attributed to the Ir-sensitizer. Collectively,
• solution (τT = 80 μs) indicates a reduction in nonradiative identical conditions. The results, summarized in Table S4,
• loading, exhibits a lower ηUC (0.31%) despite its relatively long power (Figure S29a). We also attempted to collect
• evaluated by measuring the absorbance of the supernatant 6.9% of uncaged MNI (Figures 5b-c and S36−S38, Table S5).
• ments clearly demonstrate that irradiation of the starting by TP-MOF, it is reasonable that the 6.9% isolation yield
• upconversion emission under identical 445 nm excitation, lower than the 22.6% isolation yield under direct UV
• performing the reaction in the presence of only Ir(dFppy- after washing displayed a yield of 2% (Figure S38). The MOF-
• COOH)3 results in a negligible yield (0.4%), thereby based material can be reused, providing good proof of concept
• pathways (Figures 5b-c, S38, and Table S5). It should be noted organic photochemical reactions. To verify the heterogeneous
• increase in reaction yield was observed; the final yield (∼4.8%) application of MOF-based UC materials in UV-activated
• concentration (Figure S46, Table S5). This trend suggests that for this study, supplementary characterization materials,
• removal in reverse-osmosis permeate for potable water reuse. Environ. (23) Saenz, F.; Ronchi, A.; Mauri, M.; Vadrucci, R.; Meinardi, F.;
• Migration in a Water-Stable Metal−Organic Framework for (81) Yao, W.; Song, X.; Xue, L.; Liu, S.; Tang, L.; Chen, Y.; Liu, H.;

Methods (brief)

• solvothermal method using ZrCl4 and trifluoroacetic acid porosity of the MOFs. In contrast, the activated sample
• determined by HF digestion followed by UV−vis analysis in linker in the MOF powders (Figure S18). Moreover, the
• pattern, confirming their phase purity (Figures 2b and S11).70 analysis of the recovered samples demonstrated no noticeable
• pores, interconnected by tetragonal windows (Figure S13). deoxygenated, stabilizer-free THF after preparation of samples
• absorption at 445 nm, all samples were excited using a 445 short triplet lifetime reduces TTA efficiency and, as shown
• collected and subjected to UC measurements at 445 nm photochemical reaction was performed in MeOH owing to the
• sample after the catalysis reaction (Figure S40). All the (e.g., free carboxylic acids), (ii) engineering the MOF surface

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• Fish — marine, predatory (tuna, swordfish, shark, king mackerel)
• Shellfish (shrimp, crab, lobster, clams, oysters, mussels)
• Seaweed/kelp foods (nori, wakame, kombu, dulse — as food products)
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• Chromium

Verification notes

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Update history

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