Hydrogen-Bond-Mediated Biomolecular Trapping: Reversible Catch-and-Release Process of Common Biomolecules on a Glycine-Functionalized Si(111)7×7 Surface
Bibliographic record
Abstract
Adsorption and desorption of several small prototypical biomolecules: glycine, glycylglycine, alanine, adenine, and thymine on a glycine-functionalized Si(111)7×7 surface have been investigated by X-ray photoelectron spectroscopy. Glycine has been found to adsorb on Si(111)7×7 through N−H dissociation, which makes the unreacted carboxyl group of the interfacial glycine adlayer an effective means to capture these biomolecules (except for thymine) through [O−H···N] hydrogen bonding. Furthermore, the captured molecules can be released simply by annealing to 120 °C for 10 s. This hydrogen-bond-mediated catch-and-release mechanism is supported by the appearance and disappearance of the characteristic hydrogen-bond N 1s features at 401.4 eV and is found to be reversible. The glycine-functionalized Si(111) surface therefore provides a flexible platform for potential applications as selective molecular traps, chemical sensors, and biomolecular electronic components.
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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".