Cooperative Sensitization Upconversion in Solution Dispersions of Co‐Crystal Assemblies of Mononuclear Yb <sup>3+</sup> and Eu <sup>3+</sup> Complexes
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Bibliographic record
Abstract
Abstract Lanthanide upconversion luminescence in nanoparticles has prompted continuous breakthroughs in information storage, temperature sensing, and biomedical applications, among others. Achieving upconversion luminescence at the molecular scale is still a critical challenge in modern chemistry. In this work, we explored the upconversion luminescence of solution dispersions of co‐crystals composed of discrete mononuclear Yb(DBM) 3 Bpy and Eu(DBM) 3 Bpy complexes (DBM: dibenzoylmethane, Bpy: 2,2′‐bipyridine). The 613 nm emission of Eu 3+ was observed under excitation of Yb 3+ at 980 nm. From the series of molecular assemblies studied, the most intense luminescence was obtained for a 1 : 1 molar ratio of Yb 3+ : Eu 3+ , resulting in a high quantum yield of 0.67 % at 2.1 W cm −2 . The structure and energy transfer mechanism of the assemblies were fully characterized. This is the first example of an Eu 3+ ‐based upconverting system composed of two discrete mononuclear lanthanide complexes present as co‐crystals in non‐deuterated solution.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it