ArticleACS applied optical materials2026
Interplay between Host Structure, Oxygen Quenching, and Triplet-Triplet Annihilation Upconversion in Hybrid Polymer Hosts.
Article in ACS applied optical materials, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The ability to convert low-energy photons to those of higher energy through triplet-triplet annihilation upconversion (TTA-UC) is of significant interest for diverse applications including solar energy harvesting, sensing, and anticounterfeiting. However, the efficiency of TTA-UC under ambient conditions is often severely limited due to the quenching of excited triplet states by molecular oxygen. Therefore, when designing TTA-UC systems, it is crucial to effectively characterize the extent of oxygen quenching and to use these insights to drive material design that effectively prevents the permeation of oxygen. In this work, we investigate the oxygen barrier properties of three organic-inorganic hybrid polymers known as ureasils, previously determined to be effective TTA-UC hosts under ambient conditions. Through both direct oxygen permeation measurements and kinetic analysis of the phosphorescence quenching of palladium-(II) octaethylporphyrin (PdOEP), we investigate how the ureasil structure, particularly with respect to silica content and molecular weight and branching of the polymer chains, affects the bulk and local oxygen permeabilities. We also demonstrate the interplay of oxygen quenching with the wider TTA-UC process, confirming that the variation in oxygen permeability is the primary factor affecting ambient TTA-UC efficiency between different ureasil structures. This emphasizes the importance of considering oxygen barrier properties as a key metric in the design of future host materials for more efficient ambient TTA-UC systems.
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.