Controlling the Photoluminescence from a Laser Dye through the Oxidation Level of Polypyrrole
Bibliographic record
Abstract
Abstract In situ spectroelectrochemistry was used to study the emission of the laser dye oxazine 720 (oxa720) embedded into a polypyrrole (ppy) matrix. The photoluminescence (PL) of the dye was found to be controlled by the oxidation level of ppy. It is suggested that a Förster resonance energy transfer (FRET) mechanism is involved in the potential‐controlled PL. FRET calculations were used to determine the dependence of the apparent distance between the dye molecules and the polymer chain with the oxidation level of ppy. In the reduced state, at −0.9 V, an efficient FRET process quenches the PL from the dye due to the short distance between the dye molecules and the polymer chains. In the oxidized state, at +0.9 V, the FRET efficiency is only 24% leading to higher PL intensity, due to the larger distance between the donor (oxa720) and the acceptor (ppy). magnified image
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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 | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".