Structure of Tiopronin-Protected Silver Nanoclusters in a One-Dimensional Assembly
Bibliographic record
Abstract
The preparation and characterization of all-thiol-protected noble-metal nanoclusters represent significant advancements in the field of nanomaterials. One of the emerging trends in the study of silver nanoclusters in particular, is the generation of sulfide-type silver at their surfaces as a result of surface protection by thiols. Here, X-ray absorption spectroscopy (XAS) was used to identify the structure and composition of 2 nm tiopronin-protected silver nanoclusters arranged in one-dimensional chains. Silver K-edge XAS multipath refinements and wavelet-transformed XAS analysis found that the nanoclusters comprised small metal cores surrounded by thick sulfide-type shells. This further demonstrates that the sulfide-type shell is a prevalent surface structure throughout silver nanoclusters protected by thiols. In addition, the antibacterial activities of the nanoclusters were also examined; they were found to be active against both Gram-positive and Gram-negative bacteria, thereby shedding light on the effects of both the surface structure and the special arrangement of the nanoclusters.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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) | 0.000 | 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 teacher head, 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".