Multicomponent Donor−Acceptor Relay System Assembled within the Cavities of Zeolite Y. Photoinduced Electron Transfer between Ru(bpy)<sub>3</sub><sup>2+</sup> and 2,4,6-Triphenylpyrylium in the Presence of Interposed TiO<sub>2</sub>
Bibliographic record
Abstract
Zeolite Y containing Ru(bpy) 3 2+ and TP + has been obtained by the stepwise ship-in-a-bottle synthesis of the two components. The identity of the two ions has been demonstrated by diffuse reflectance UV−vis and IR spectra. Emission spectra (λ ex = 466 nm, λ em = 600 nm) corresponding to the Ru(bpy) 3 2+ lumophore indicate that 70% of the Ru(bpy) 3 2+ complexes interact with TP + through static quenching; only a weak emission corresponding to the unquenched complex is observed. The transient absorption spectrum of [Ru(bpy) 3 2+ −TP + ]@Y obtained by laser flash photolysis is complex, but the presence of Ru(bpy) 3 3+ was detected. The co-incorporation of semiconductor oxide TiO 2 disfavors the Ru(bpy) 3 2+ −TP + interaction, restoring the Ru(bpy) 3 2+ emission to 90% of the original value. This indicates that small TiO 2 clusters of a few Ti atoms occupying the empty zeolite space (1.3 nm) and, having a much larger band gap than regular TiO 2, (∼50 nm) act mainly as insulators between good electron donor and acceptor molecules as opposed to electron relays.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".