ArticleJournal of the American Chemical Society2023
Metal-Organic Bichromophore Lowers the Upconversion Excitation Power Threshold and Promotes UV Photoreactions.
Article in Journal of the American Chemical Society, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
What it found
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Who cites it
18 citing papers in PubMed, 40 citations in OpenAlex.
- Monolithic Porous Polymer Architectures for Visible-to-UV Upconversion-Driven Photochemical Reactions.Angewandte Chemie (International ed. in English) · 2026Article
- High-yield visible-to-ultraviolet upconversion by ZnSe quantum dots with dynamic triplet transfer.Nature communications · 2026Article
- Sterically protected π-electron systems for efficient solid-state photon upconversion.Nature communications · 2026Article
- A Metal-Organic Framework Platform Enabling Visible-to-Ultraviolet Upconversion-Driven Heterogeneous Photochemistry.JACS Au · 2026Article
- Iridium(III) Complexes Bearing Pyrene- and Anthracene-Functionalized Ligands-Photophysics and Application Potential in Photocatalysis, Triplet-Triplet Annihilation Upconversion, Photodynamic Therapy, and Photoactivated Chemotherapy.Molecules (Basel, Switzerland) · 2026Review
- YbAngewandte Chemie (International ed. in English) · 2026Article
- Mechanistic Design in Photocatalysis.Accounts of chemical research · 2026Article
- Expanding Thermodynamic and Kinetic Frontiers in Molecular Photocatalysis.ACS central science · 2026Review
- Article
- Fully Sensitized Upconversion Nanoparticles as Efficient Catalysts for NIR-Driven UV Photochemistry.Angewandte Chemie (International ed. in English) · 2025Article
- Improving Triplet-Triplet Annihilation Upconversion Output by a Triplet Mediator Approach: Mechanistic Insights on Homo and Hetero-Annihilation in Three-Component Systems.Journal of the American Chemical Society · 2025Article
- Tuning the Efficiency of Iridium(III) Complexes for Energy Transfer (EnT) Catalysis through Ligand Design.Chemistry (Weinheim an der Bergstrasse, Germany) · 2025Article
- Luminescent Fe(III) Complex Sensitizes Aerobic Photon Upconversion and Initiates Photocatalytic Radical Polymerization.Journal of the American Chemical Society · 2024Article
- Iron(III) Carbene Complexes with Tunable Excited State Energies for Photoredox and Upconversion.Journal of the American Chemical Society · 2024Article
- Controlling Excited State Localization in Bichromophoric Photosensitizers via the Bridging Group.Inorganic chemistry · 2024Article
- Improved transition metal photosensitizers to drive advances in photocatalysis.Chemical science · 2023Review
- Photocyclization by a triplet-triplet annihilation upconversion pair in water - avoiding UV-light and oxygen removal.Chemical science · 2023Article
- Bulky Substituents Promote Triplet-Triplet Annihilation Over Triplet Excimer Formation in Naphthalene Derivatives.Journal of the American Chemical Society · 2023Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Sensitized triplet-triplet annihilation upconversion is a promising strategy to use visible light for chemical reactions requiring the energy input of UV photons. This strategy avoids unsafe ultraviolet light sources and can mitigate photo-damage and provide access to reactions, for which filter effects hamper direct UV excitation. Here, we report a new approach to make blue-to-UV upconversion more amenable to photochemical applications. The tethering of a naphthalene unit to a cyclometalated iridium(III) complex yields a bichromophore with a high triplet energy (2.68 eV) and a naphthalene-based triplet reservoir featuring a lifetime of 72.1 μs, roughly a factor of 20 longer than the photoactive excited state of the parent iridium(III) complex. In combination with three different annihilators, consistently lower thresholds for the blue-to-UV upconversion to crossover from a quadratic into a linear excitation power dependence regime were observed with the bichromophore compared to the parent iridium(III) complex. The upconversion system composed of the bichromophore and the 2,5-diphenyloxazole annihilator is sufficiently robust under long-term blue irradiation to continuously provide a high-energy singlet-excited state that can drive chemical reactions normally requiring UV light. Both photoredox and energy transfer catalyses were feasible using this concept, including the reductive N-O bond cleavage of Weinreb amides, a C-C coupling reaction based on reductive aryl debromination, and two Paternò-Büchi [2 + 2] cycloaddition reactions. Our work seems relevant in the context of developing new strategies for driving energetically demanding photochemistry with low-energy input light.
Identifiers
What Socratic holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.