Photochemical Reactions of Phenazine and Acridine Adsorbed on Silver Colloid Surfaces
Bibliographic record
Abstract
The photochemical reactions of phenazine and acridine adsorbed on silver colloid surfaces were studied. Both molecules, when adsorbed on the surface of colloidal silver, were found to photodecompose with the cleavage of a N−C bond in a one-photon process. Phenazine was found to photodecompose further to graphitic carbon under our experimental conditions, particularly when irradiated with short-wavelength laser light. The reaction rate of phenazine, which we propose to adsorb flat on the surface, was faster than that of acridine, which we suggest adsorbs standing up, implying that the reaction rate might depend on the orientation of the molecule with respect to the local metal surface. The reaction rate and degree of photodecomposition of these compounds depend on the irradiation wavelength in a complicated manner. For acridine, the photoreaction rate and the Raman enhancement increased toward the blue, whereas the degree of photodecomposition, i.e., the quantity of photoproduct produced, is a maximum at ∼500 nm.
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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) | 0.001 | 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) | 0.001 | 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".