Molybdenum Disulfide Flakes as Platforms for the Photoconversion of 4-Nitrothiophenol
Bibliographic record
Abstract
Two-dimensional (2D) transition metal dichalcogenides (TMD) are of specific interest for a variety of applications when they present a semiconducting character. The band gap between the valence and the conducting band can be tuned and is dependent on the phase of the TMD flake, the number of layers, and how the flakes are chemically modified to impart new surface functionalities. We investigate the surface functionalization of molybdenum disulfide (MoS 2 ) flakes with electron-acceptor 4-nitrothiophenol (NTP) and measure how the band gap of the flake is altered by the presence of this small organic molecule. The functionalized MoS 2 surface with NTP is investigated with confocal and tip-enhanced Raman spectroscopy as well as with photoluminescence microscopy under 532 nm excitation. Photoconversion of NTP into dimercaptoazobenzene (DMAB) and aminothiophenol (ATP) is reported even under weak irradiation conditions, highlighting the potential of MoS 2 for its photocatalytic properties. The intensity and spectral changes of the photoluminescence of modified MoS 2 are indicative of the charge transfer character between MoS 2 and NTP.
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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) | 0.001 | 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".