Electron Transfer Initiated Formation of Covalently Bound Organic Layers on Silicon Surfaces
Bibliographic record
Abstract
An electron transfer initiated organic modification of silicon surfaces, using a donor/acceptor pair of ferrocene (Fc) and N -bromosuccinimide (NBS) (or N -bromophthalimide (NBP)), is reported for the first time. This modification method is efficient and does not require the use of heat or irradiation. Multilayer structures are formed on the surfaces through radical reactions, similar to the reduction of aryl diazonium salts. The modified surfaces were characterized by infrared reflection–absorption spectroscopy (IRRAS), X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). IRRAS spectra clearly indicate a strong carbonyl stretch and the presence of a ferrocene moiety for each of the modified surfaces. XPS data show the presence of all elements from the donor/acceptor pair and provide strong evidence that the samples can be further modified by nucleophilic substitution. AFM imaging indicates the formation of dense layers that can be scratched away to reveal depth information on approximately 2 nm and the underlying terraces of the silicon substrate. A mechanism is proposed where radical abstraction of a surface hydrogen takes place leading to the formation of a covalently bound imidyl group, which is followed by the formation of polymeric structures through radical chain reactions.
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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".