Aqueous Photoelectrochemical Reduction of Anthraquinone Disulfonate at Organic Polymer Films
Bibliographic record
Abstract
The photoelectrochemistry (PEC) of poly(3‐hexylthiophene) (P3HT) is investigated by studying the photocathodic reduction of anthraquinone‐2,7‐disulfonate (AQ27DS). A photocurrent of ≈ 100 μA cm−2 is obtained using ≈ 5 × 10−3 m AQ27DS and 100 mW cm−2 visible light. The photon‐to current‐efficiency approaches ≈ 1% when irradiated with low intensity monochromatic light. The photoreduction proceeds by either a 2‐electron, 2‐proton, or 2‐electron, 1‐proton process depending on the solution pH. The band energy levels of P3HT shift by ≈ 150 mV in contact with aqueous solutions over a 1–12 pH range, and considerable more in the presence of AQ27DS during PEC, to the extent that Fermi level pinning occurs. This work reveals that the efficiency of electron–hole separation is required to improve photoefficiency and the interaction of redox couples with the P3HT semiconductor interface is warranted in order to understand the photovoltages developed across the semiconductor/electrolyte interfaces. 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".