N-Heterocyclic Carbenes as Clickable Molecular Anchors for Electrochemical Surface Functionalization
Bibliographic record
Abstract
The potential of alkyne-containing NHCs as anchor molecules for electrochemical surface modification is investigated. Using X-ray photoelectron spectroscopy, fluorescence tagging, and shell-isolated enhanced Raman spectroscopy, we demonstrate that these NHCs can bind effectively to multiple surfaces and be functionalized via electrochemical copper-catalyzed azide-alkyne cycloaddition. Notably, we extend this approach beyond metals and demonstrate its applicability to glassy carbon. A comparison with alkyne-containing diazonium salts shows that NHCs result in lower surface coverage/passivation, making NHCs better-suited for electrochemical applications. The versatility of alkyne-functionalized NHCs as molecular anchors for various surfaces is demonstrated through the attachment of electrochemically active TEMPO•, the immobilization of streptavidin, and the formation of copper coatings. These findings highlight the potential of NHCs as alternatives to thiols and diazonium salts for the design of functional materials, electrodes, and biosensors.
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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".