ArticleChemSusChem2026
High Potential Isoindoline-Based Nitroxides Posolytes for Aqueous Organic Redox Flow Batteries.
Article in ChemSusChem, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- High Potential Isoindoline-Based Nitroxides Posolytes for Aqueous Organic Redox Flow Batteries.ChemSusChem · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The growing transition from fossil fuels to renewable energy sources such as wind and solar requires efficient stationary energy storage systems to ensure grid stability. Among emerging technologies, redox flow batteries (RFBs) offer a promising solution due to their unique decoupling of energy and power capacities, allowing flexible system design. Recent advances in organic RFBs (ORFBs) have highlighted redox-active organic molecules as sustainable alternatives to conventional vanadium-based systems, addressing issues of cost and corrosivity. In particular, nitroxide radicals such as tetramethylpiperidinyloxyl (TEMPO) derivatives have demonstrated high reversibility and fast kinetics in aqueous systems, though the stability of their oxidized N-oxoammonium form remains a challenge for long-term storage. Isoindoline-based nitroxides offer potential for enhanced stability but have been limited by complex and low-yield synthetic routes. Herein, we present a convenient metal-catalyzed [2 + 2 + 2] intermolecular cycloaddition strategy for the synthesis of isoindoline-based nitroxides and their aza analogs, including two new candidates, TC-TMIO and PPO. Electrochemical characterization reveals that PPO, a cationic 2,3-dihydropyrrolo[3,4-c]pyridinium nitroxide, exhibits an oxidation potential 220 mV higher than the benchmark 4-TMA-TEMPO and achieves solubility exceeding 3 M in 1 M NaCl aqueous solution. Preliminary stability assessments of the PPO and RFB testing using a methyl viologen/PPO system demonstrate its potential as a high-performance, sustainable posolyte for aqueous ORFBs.
Indexed as
Identifiers
What OpenQuestion 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 OpenQuestion graph.