Curated catalog and commentary on Triplet-Triplet Annihilation Upconversion research.https://tta-uc-tracker.pages.dev/en-ushttps://tta-uc-tracker.pages.dev/discussion/2026-03-27/https://tta-uc-tracker.pages.dev/discussion/2026-03-27/Daily Update - Commentary and analysis on TTA-UC research developments.Fri, 27 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-26/https://tta-uc-tracker.pages.dev/discussion/2026-03-26/Daily Update - Commentary and analysis on TTA-UC research developments.Thu, 26 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-25/https://tta-uc-tracker.pages.dev/discussion/2026-03-25/Daily Update - Commentary and analysis on TTA-UC research developments.Wed, 25 Mar 2026 16:00:00 GMThttps://pubs.acs.org/doi/10.1021/jacs.5c20500https://pubs.acs.org/doi/10.1021/jacs.5c20500Percy Gonzalo Sifuentes-Samanamud, Adrian Sauer, Aki Masaoka et al. in Journal of the American Chemical Society. Demonstrates that a molybdenum-based near-infrared spin-flip emitter serves as a triplet-selective energy acceptor from tetracene-based singlet fission (SF) dimers. The large energy gap between spin-allowed transitions and the luminescent spin-flip transition of the Mo complex enables efficient exothermic triplet energy transfer (TET) to the spin-flip excited doublet state while circumventing the competing Forster resonance energy transfer (FRET) from the initially formed tetracene singlet. Quantum yields of Mo complex doublet state formation by tetracene SF dimers with phenylene, 2,5-methylphenylene, and p-terphenylene bridging units were 112 +/- 6%, 132 +/- 2%, and 128 +/- 4%, respectively, in solution. The drop of fluorescence lifetimes at high Mo complex concentrations implies energy transfer from exchange-coupled triplet pairs.Wed, 25 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-24/https://tta-uc-tracker.pages.dev/discussion/2026-03-24/Daily Update - Commentary and analysis on TTA-UC research developments.Tue, 24 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-23/https://tta-uc-tracker.pages.dev/discussion/2026-03-23/Daily Update - Commentary and analysis on TTA-UC research developments.Mon, 23 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-22/https://tta-uc-tracker.pages.dev/discussion/2026-03-22/Daily Update - Commentary and analysis on TTA-UC research developments.Sun, 22 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-21/https://tta-uc-tracker.pages.dev/discussion/2026-03-21/Daily Update - Commentary and analysis on TTA-UC research developments.Sat, 21 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-20/https://tta-uc-tracker.pages.dev/discussion/2026-03-20/Daily Update - Commentary and analysis on TTA-UC research developments.Fri, 20 Mar 2026 16:00:00 GMThttps://onlinelibrary.wiley.com/doi/abs/10.1002/smll.202510706https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.202510706Ming-Yu Zhang, Ling Huang in Small. Comprehensive review examining porous framework materials - including metal-organic frameworks (MOFs) and porous aromatic frameworks (PAFs) - as platforms for TTA-UC. Provides detailed analysis of the intrinsic structure-performance relationships in these materials, highlighting how their diverse functional and structural characteristics enable efficient, oxygen-resistant, solid-state TTA-UC systems. Summarizes recent advances and applications in bioimaging, sensing, and photocatalysis. Discusses prevailing challenges and proposes prospective solutions for the field.Fri, 20 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-19/https://tta-uc-tracker.pages.dev/discussion/2026-03-19/Daily Update - Commentary and analysis on TTA-UC research developments.Thu, 19 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-18/https://tta-uc-tracker.pages.dev/discussion/2026-03-18/Daily Update - Commentary and analysis on TTA-UC research developments.Wed, 18 Mar 2026 16:00:00 GMThttps://pubs.acs.org/doi/abs/10.1021/acs.nanolett.6c00279https://pubs.acs.org/doi/abs/10.1021/acs.nanolett.6c00279Seamus S. Lowe, Samuel P. Butler, John E. Anthony et al. in Nano Letters. Demonstrates plasmon-enhanced NIR-to-blue TTA upconversion using a monolayer WSe2 (2D transition-metal dichalcogenide) as the sensitizer in a WSe2/organic heterojunction. Under far-field excitation the device reaches a threshold of 19 mW/cm2 and an external quantum efficiency (EQE) of 0.17% with a 1.1 eV anti-Stokes shift. Surface plasmon polariton (SPP) excitation lowers the threshold to 0.9 mW/cm2 and boosts EQE to 3.6%. The plasmon enhancement is attributed to SPP near-field enhancement and dark-exciton absorption in WSe2. Optimization of the WSe2 transfer process is identified as a key performance factor.Wed, 18 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-17/https://tta-uc-tracker.pages.dev/discussion/2026-03-17/Daily Update - Commentary and analysis on TTA-UC research developments.Tue, 17 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-16/https://tta-uc-tracker.pages.dev/discussion/2026-03-16/Daily Update - Commentary and analysis on TTA-UC research developments.Mon, 16 Mar 2026 16:00:00 GMThttps://pubs.acs.org/doi/abs/10.1021/acs.jpclett.6c00275https://pubs.acs.org/doi/abs/10.1021/acs.jpclett.6c00275Taku Kinoshita, Takuya Mori, Takao Mori et al. in The Journal of Physical Chemistry Letters. Demonstrates solid-state NIR-to-visible TTA-UC at the 1 um edge using ruthenium sensitizers with spin-forbidden S0-to-T1 absorption. By exploiting the direct spin-forbidden excitation pathway, the Ru sensitizer series bypasses the large ISC energy loss inherent to conventional S1-mediated sensitization, enabling excitation at and beyond 1000 nm in solid-state films. Addresses the molecular tunability advantage of Ru complexes while tackling the threshold intensity challenge that spin-forbidden absorption faces compared to semiconductor sensitizers like PbS QDs.Mon, 16 Mar 2026 16:00:00 GMThttps://www.sciencedirect.com/science/article/pii/S246851942600159Xhttps://www.sciencedirect.com/science/article/pii/S246851942600159XP. D. Dominguez, S. Bonardd, N. M. Perez in Materials Today Chemistry. Comprehensive review examining recent progress in aqueous TTA-UC from a nanostructured materials design perspective. Rather than focusing solely on photophysics, discusses how different material architectures - nanocapsules, micelles, liposomes, microemulsions, hydrogels, nanoparticles, supramolecular assemblies, and metal-organic frameworks - have been engineered to enable efficient upconversion in water by controlling molecular confinement, interfacial environments, and oxygen accessibility. Critically compares structure-property relationships that determine triplet energy transfer, annihilation efficiency, and operational stability in aqueous media.Mon, 16 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-15/https://tta-uc-tracker.pages.dev/discussion/2026-03-15/Daily Update - Commentary and analysis on TTA-UC research developments.Sun, 15 Mar 2026 16:00:00 GMThttps://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.74937https://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.74937Luca Pollice, Xueqian Hu, Letizia G. Tedoldi et al. in Advanced Functional Materials. Develops nanostructured polymer scintillators that exploit sensitized triplet-triplet annihilation for improved gamma-ray vs neutron discrimination via pulse shape discrimination (PSD). Extends the Monguzzi/Weder groups prior work (Adv. Mater. 2024) on TTA-based polymeric scintillators by engineering the nanostructured polymer matrix to enhance sensitized triplet exciton generation, enabling faster and more reliable PSD. The nanodomains within the polymer preserve liquid-like chromophore dynamics needed for efficient TTA while maintaining a solid macroscopic form factor. Demonstrates a completely new application domain for TTA photophysics beyond energy conversion and photocatalysis.Sun, 15 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-14/https://tta-uc-tracker.pages.dev/discussion/2026-03-14/Daily Update - Commentary and analysis on TTA-UC research developments.Sat, 14 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-13/https://tta-uc-tracker.pages.dev/discussion/2026-03-13/Daily Update - Commentary and analysis on TTA-UC research developments.Fri, 13 Mar 2026 16:00:00 GMThttps://pubs.acs.org/doi/abs/10.1021/acsnano.5c22144https://pubs.acs.org/doi/abs/10.1021/acsnano.5c22144Yanhong Fan, Jia Luo, Ziqi Wang et al. in ACS Nano. Reveals that hydrocarbon ligands on nanoparticles can remotely govern secondary triplet energy transfer (TET2) from triplet mediators to annihilators, which occurs entirely outside the QD core. By shrinking the native oleate ligand shell on PbSe QD sensitizers before attaching triplet mediator ligands, NIR-to-visible upconversion performance improves dramatically. Transient absorption spectroscopy confirms the compact ligand shell boosts TET2 efficiency from 59.4% to 93.5%. Molecular dynamics simulations attribute the enhancement to shortened mediator-annihilator distances from reduced steric hindrance. The strategy is versatile across multiple systems: PbSe NIR-to-visible, CdSe green-to-blue, solid-state films, and even lanthanide-doped nanoparticle hybrids. The same principle applies to singlet fission downconversion, boosting photon-multiplication efficiency from 132% to 163%.Fri, 13 Mar 2026 16:00:00 GMThttps://tta-uc-tracker.pages.dev/discussion/2026-03-12/https://tta-uc-tracker.pages.dev/discussion/2026-03-12/Inaugural Edition - Commentary and analysis on TTA-UC research developments.Thu, 12 Mar 2026 16:00:00 GMThttps://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.202530758https://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.202530758C. J. O'Dea, E. P. Scruggs, Z. A. Page in Advanced Functional Materials. Demonstrates triplet-triplet annihilation photopolymerization (TTAP) for vat-based 3D printing using PtOEP as sensitizer and DPA as annihilator. DPA serves a dual role as both annihilator and auxiliary oxygen scavenger, reducing inhibition time. The super-linear intensity dependence of TTA provides enhanced photochemical curing contrast compared to conventional single-photon polymerization, enabling higher resolution 3D printing at lower light intensities.Wed, 11 Mar 2026 16:00:00 GMThttps://arxiv.org/abs/2603.09871https://arxiv.org/abs/2603.09871Kristin E. J. Kuhl, Katharina Rediger, Nikhita Khera et al.. undefinedTue, 10 Mar 2026 16:00:00 GMThttps://www.nature.com/articles/s41563-026-02535-4https://www.nature.com/articles/s41563-026-02535-4Zhaolong Wang, Jingyi Zhu, Kaifeng Wu in Nature Materials. Demonstrates a new proton shuttle-assisted mechanism for spin-triplet migration from photoexcited colloidal quantum dots to surface-anchored molecular moieties. Establishes a previously unknown pathway for triplet energy transfer mediated by proton-coupled processes, directly relevant to nanocrystal-sensitized TTA-UC systems where QD-to-molecule triplet transfer is the efficiency-limiting step.Mon, 09 Mar 2026 16:00:00 GMThttps://pubs.rsc.org/en/content/articlehtml/2026/sc/d6sc00714ghttps://pubs.rsc.org/en/content/articlehtml/2026/sc/d6sc00714gR. Li, L.-H. Jiang, L. Xi et al. in Chemical Science. Reports a novel mono-styryl-BODIPY surface ligand on PbS quantum dots that achieves 65.4% triplet exciton transfer efficiency with only seven ligands per QD (low coverage). Using rubrene as annihilator, achieves 16.8% upconversion quantum yield (normalized to 100%). The BODIPY ligand is more stable than tetracene-based alternatives. Coupling with BPEA annihilator achieves 808 nm to 480 nm upconversion (record anti-Stokes shift for NIR QD-based TTA-UC into the cyan-blue region), with 6.5% efficiency.Thu, 05 Mar 2026 17:00:00 GMThttps://arxiv.org/abs/2510.15184https://arxiv.org/abs/2510.15184Pournima Narayanan, Rabeeya Hamid, Linda Pucurimay et al. in arXiv preprint (updated March 2, 2026). Demonstrates visible imaging of incoherent 1200-nm NIR light using thin-film TTA-UC. A single-layer bulk heterojunction integrates PbS quantum dots as tunable NIR absorbers with a TES-ADT organic semiconductor matrix. Achieves anti-Stokes shifts up to 500 nm and high internal quantum efficiencies across the NIR-I and NIR-II windows (800-1200 nm). 5-tetracene carboxylic acid ligands on PbS QD surfaces boost sensitized triplet yield, yielding a 15-fold improvement in UC efficiency. Images formed at intensities as low as 20 mW/cm^2.Mon, 02 Mar 2026 17:00:00 GMThttps://chemrxiv.org/doi/abs/10.26434/chemrxiv.10001697https://chemrxiv.org/doi/abs/10.26434/chemrxiv.10001697Takashi Nagaoka, Yasunori Matsui, Takuya Ogaki et al. in ChemRxiv preprint. Introduces di(p-anisyl)tetrahydropentalene (TP-Ans) as a new symmetric, rigid annihilator for TTA-UC. The tetrahydropentalene core provides structural rigidity that suppresses nonradiative decay, while the p-anisyl substituents tune the electronic properties. Demonstrates efficient TTA-assisted photon upconversion with this previously unexplored chromophore class. Expands the annihilator design space beyond the established anthracene, perylene, and rubrene families.Sun, 01 Mar 2026 17:00:00 GMThttps://academic.oup.com/nsr/advance-article/doi/10.1093/nsr/nwag078/8465378https://academic.oup.com/nsr/advance-article/doi/10.1093/nsr/nwag078/8465378Lin-Han Jiang, Min-Yu Zhang, Jia-Yao Li et al. in National Science Review. Constructs a high-performance NIR-II TTA-UC system operating beyond 1000 nm using quantum dot sensitizers, and demonstrates its application in driving sunlight-powered photocatalysis with low-energy photons that would otherwise be wasted. Extends the practical spectral range of QD-sensitized TTA-UC deep into the NIR-II window, enabling photocatalytic reactions powered by photons below silicon's bandgap energy. Represents the first demonstration of TTA-UC-driven photocatalysis using >1000 nm sunlight.Sun, 01 Mar 2026 17:00:00 GMThttps://pubs.rsc.org/en/content/articlelanding/2026/py/d5py00874chttps://pubs.rsc.org/en/content/articlelanding/2026/py/d5py00874cYuki Horino, Ryota Kobayashi, Toshiko Mizokuro et al. in Polymer Chemistry. Synthesizes polynorbornenes with both platinum-acetylide complex (triplet sensitizer) and 9,10-diphenylanthracene (DPA, annihilator) moieties covalently attached to the polymer side chains. Creates self-contained macromolecular TTA-UC systems where both components are fixed in the polymer backbone at controlled ratios. Evaluates photoluminescent properties and triplet energy transfer within the polymer. Continues the AIST/RPTU group's systematic work on polynorbornene-based TTA-UC platforms (Polym. Chem. 2021, 2024).Sat, 28 Feb 2026 17:00:00 GMThttps://opg.optica.org/abstract.cfm?uri=oe-34-5-8362https://opg.optica.org/abstract.cfm?uri=oe-34-5-8362Kenji Kamada, Christian Heck in Optics Express. Proposes a simple and rapid method for determining the threshold excitation intensity of TTA-UC systems from a single snapshot of the emission image. The threshold intensity is a key parameter characterizing TTA-UC performance - it marks the transition from quadratic to linear intensity dependence and dictates practical applicability under solar illumination. The snapshot method reduces measurement time from minutes (conventional intensity-by-intensity scanning) to under one second, with accuracy comparable to the conventional approach.Sat, 28 Feb 2026 17:00:00 GMThttps://pubs.acs.org/doi/10.1021/acsenergylett.6c00073https://pubs.acs.org/doi/10.1021/acsenergylett.6c00073D.M. de Clercq, S. Feldmann in ACS Energy Letters. Review examining how molecular chirality impacts both singlet fission (SF) and triplet fusion (TF, i.e., TTA). Covers dendrimers with pentacene coronas (for SF) and anthracene coronas (for TTA-UC). Reports 50-fold enhanced dissymmetry factor for UV circularly polarized luminescence (UVCPL) realized via triplet energy transfer followed by TTA-UC. Discusses how chiral packing and spin-orbit coupling modulation affect triplet pair dynamics.Wed, 25 Feb 2026 17:00:00 GMThttps://pubs.rsc.org/en/content/articlelanding/2026/sc/d6sc00399khttps://pubs.rsc.org/en/content/articlelanding/2026/sc/d6sc00399kJ. Isokuortti, L. Nienhaus in Chemical Science. Perspective article examining molecular design principles for solid-state TTA-UC annihilators. Proposes a unified excitonic framework linking upconversion with OLEDs and singlet fission. Discusses controlling triplet exciton diffusion, maximizing singlet formation, and suppressing loss channels (excimer/trap states). Advocates for data-driven machine learning + phonon engineering to surpass the solution-first approach.Tue, 24 Feb 2026 17:00:00 GMThttps://pubs.acs.org/doi/10.1021/acs.jpclett.5c04114https://pubs.acs.org/doi/10.1021/acs.jpclett.5c04114J. Luo, Y. Fan, Y. Zhao et al. in The Journal of Physical Chemistry Letters. Uses QD-sensitized TTA-UC as a testing platform to show that Te doping in alloyed quantum dots enhances exciton wave function delocalization, which boosts triplet energy transfer and upconversion efficiency. Demonstrates that tuning QD composition (alloying) is a viable strategy for improving nanocrystal-sensitized upconversion.Tue, 24 Feb 2026 17:00:00 GMThttps://www.sciencedirect.com/science/article/pii/S1010603026001206https://www.sciencedirect.com/science/article/pii/S1010603026001206T. Gou, S. Liu, C. Chen et al. in Journal of Photochemistry and Photobiology A: Chemistry. Addresses a key loss mechanism in solid-state TTA-UC: singlet energy back transfer from the annihilator back to the sensitizer. Demonstrates strategies to suppress this parasitic channel, improving overall upconversion efficiency in solid-state materials.Mon, 23 Feb 2026 17:00:00 GMThttps://www.nature.com/articles/s41557-026-02076-yhttps://www.nature.com/articles/s41557-026-02076-yJ. Zhao, J. Xu, S. Peng in Nature Chemistry. Demonstrates ultrafast singlet fission at interchromophore distances up to 16 A (previous limit was ~5.6 A) by using nitrogen-doped carbon nanohoops to co-optimize through-bond and through-space charge-transfer interactions. SF occurs in under 4 picoseconds. Shows that strong electronic coupling can be achieved without dense molecular packing, overturning assumptions about van der Waals proximity requirements for SF.Mon, 23 Feb 2026 17:00:00 GMThttps://iopscience.iop.org/article/10.1088/2515-7639/ae477e/metahttps://iopscience.iop.org/article/10.1088/2515-7639/ae477e/metaS. Sun, C. Ma, D. He et al. in Journal of Physics: Materials. Develops TTA-UC based photoluminescence temperature sensing. Exploits the temperature dependence of triplet diffusion and annihilation dynamics to create optical thermometers. Demonstrates the utility of TTA-UC beyond energy conversion in sensing applications.Thu, 19 Feb 2026 17:00:00 GMThttps://pubs.rsc.org/en/content/articlehtml/2026/cc/d5cc06270ehttps://pubs.rsc.org/en/content/articlehtml/2026/cc/d5cc06270eF. Kishimoto, K. Hisano, T. Wakihara in Chemical Communications. Develops organic-inorganic hybrid layered porous materials for TTA-UC by integrating anthracene-based emitters into zeolite frameworks using click chemistry. Demonstrates a new approach to confining TTA-UC chromophores in ordered porous hosts, potentially improving oxygen tolerance and structural control.Thu, 19 Feb 2026 17:00:00 GMThttps://pubs.rsc.org/en/content/articlelanding/2026/sc/d5sc09759bhttps://pubs.rsc.org/en/content/articlelanding/2026/sc/d5sc09759bH. Li, Q. Luan, S. Zhang et al. in Chemical Science. Demonstrates the first TTA-UC system capable of upconverting NIR excitation beyond 800 nm to the deep-blue spectral region. Uses PbS quantum dots as sensitizers, perylene-3-carboxylic acid (3-PYCA) as a novel mediator, and perylene as an annihilator with triplet energy levels precisely engineered within 0.06 eV. Achieves an exceptional anti-Stokes shift of 1.3 eV (record for QD-based TTA-UC), with a high quantum yield of 2.1% (out of 50% max), an order of magnitude improvement over previously reported QD-based systems with anti-Stokes shifts above 0.8 eV. The upconverted deep-blue light efficiently drives cis-to-trans photoisomerization of azobenzene, demonstrating NIR-triggered photochemical applications.Wed, 18 Feb 2026 17:00:00 GMThttps://onlinelibrary.wiley.com/doi/abs/10.1002/poc.70066https://onlinelibrary.wiley.com/doi/abs/10.1002/poc.70066Toshiko Mizokuro, Emiko Koyama, Shotaro Ito et al. in Journal of Physical Organic Chemistry. Systematic study of how chemical substitutions at the 4-positions of diphenylanthracene (DPA) affect TTA-UC efficiency. Synthesized DPA derivatives with electron-donating and electron-accepting substituents at both 4-positions. DCl-DPA showed the highest fluorescence quantum yield, followed by DCN-DPA. However, unsubstituted DPA still achieved the highest UC quantum efficiency, followed by DCl-DPA and DCN-DPA. Analysis of saturated UC quantum efficiency, triplet-triplet energy transfer quantum yield, and TTA quantum yield revealed that the TTA quantum yield (phi_TTA) primarily governs the overall UC performance, providing design rules for annihilator optimization.Mon, 16 Feb 2026 17:00:00 GMThttps://onlinelibrary.wiley.com/doi/10.1002/smll.202514174https://onlinelibrary.wiley.com/doi/10.1002/smll.202514174Zhaolong Wang, Xiaoheng Chen, Kaifeng Wu in Small. Low-toxicity (Cd-free, Pb-free) blue ZnSe-based quantum dots efficiently sensitize the triplet states of surface-anchored thioxanthone (ketone) molecules. This hybrid QD-ketone sensitizer enables three challenging photochemical applications: (i) visible-to-ultraviolet B photon upconversion via TTA with a large anti-Stokes shift of 0.8 eV, (ii) energy transfer photocatalysis (disulfide-ene reaction), and (iii) reductive aryl dechlorination and C-N coupling driven by thioxanthone triplet hydrogen abstraction.Sat, 14 Feb 2026 17:00:00 GMThttps://pubs.acs.org/doi/abs/10.1021/acsaem.5c04014https://pubs.acs.org/doi/abs/10.1021/acsaem.5c04014J.G. Vitillo in ACS Applied Energy Materials. Computational study pushing the frontier of TTA-UC into the silica telecom band (beyond 1250 nm). Identifies molecular candidates that could enable upconversion of deeply NIR photons relevant to both solar energy harvesting and optical communications.Thu, 12 Feb 2026 17:00:00 GMThttps://www.cell.com/chem/abstract/S2451-9294(25)00477-2https://www.cell.com/chem/abstract/S2451-9294(25)00477-2M.Y. Zhang, L.H. Jiang, J.Y. Li et al. in Chem (Cell Press). Demonstrates TTA-UC in covalent organic frameworks (COFs) with tunability of both interface and bulk exciton dynamics. COFs provide highly ordered, porous scaffolds that can organize sensitizer-annihilator pairs at the molecular level, offering a materials platform with applications across photovoltaics, photocatalysis, bioimaging, and anti-counterfeiting.Tue, 10 Feb 2026 17:00:00 GMThttps://pubs.rsc.org/en/content/articlehtml/2026/cc/d5cc07132ahttps://pubs.rsc.org/en/content/articlehtml/2026/cc/d5cc07132aL.M. Thompson, M.J. Mackintosh, S. Saha et al. in Chemical Communications. Feature article reviewing computational approaches for modeling triplet energy transfer (TEnT) processes. Covers diabatic state methods, the two-state and four-state models for TEnT, and the challenge of properly including charge-transfer states. Discusses applications to biological systems, photocatalysis, and materials design. Highlights future directions including reliable and computationally efficient prediction of TEnT kinetics.Tue, 10 Feb 2026 17:00:00 GMThttps://advanced.onlinelibrary.wiley.com/doi/abs/10.1002/adom.202503291https://advanced.onlinelibrary.wiley.com/doi/abs/10.1002/adom.202503291D. Hubner, C.M.Q. Le, A. Spangenberg in Advanced Optical Materials. Uses sensitized TTA-UC nanoparticles to convert red light into blue light, which then drives aqueous radical polymerization. Demonstrates that TTA-UC can be coupled to photoredox catalysis using low-energy NIR/red excitation, enabling polymerization reactions under biologically benign light conditions.Mon, 09 Feb 2026 17:00:00 GMT