New Polyalkynyl Dendrons and Dendrimers: “Click” Chemistry with Azidomethylferrocene and Specific Anion and Cation Electrochemical Sensing Properties of the 1,2,3‐Triazole‐Containing Dendrimers
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Bibliographic record
Abstract
Abstract Dendrimers for ion sensing : The synthesis and use of new tris‐alkynyl dendrons are reported. So‐called “click” reactions of the dendrimers described with azidomethylferrocene give 27‐ferrocenyl, 81‐ferrocenyl, and 243‐ferrocenyl dendrimers. Electrochemical recognition of oxo‐anions and Pd 2+ cations has been compared using the three polyferrocenyl dendrimers. magnified image The synthesis and use of the new tris‐alkynyl dendrons 2 to 5 are reported, including the Williamson reaction of 5 with 9‐iodo ( 9 ), 27‐iodo ( 11 ), and 81‐iodo ( 12 ) dendritic cores to yield 27‐alkynyl ( 13 ), 81‐alkynyl ( 14 ), and 243‐alkynyl ( 15 ) dendrimers. So‐called “click” reactions of these three dendrimers with azidomethylferrocene ( 20 ) give 27‐ferrocenyl ( 16 ), 81‐ferrocenyl ( 17 ), and 243‐ferrocenyl ( 18 ) dendrimers. Electrochemical recognition of oxo‐anions (H 2 PO 4 − and ATP 2− ) and Pd 2+ cation has been compared using the three polyferrocenyl dendrimers. Derivatization of Pt electrodes with the dendrimers for recognition becomes more facile with increasing size of the dendrimer. This first “click” dendrimer bearing 243‐ferrocenyl groups is the best one in the series to obtain robust, recyclable modified Pt electrodes, whereas previous “click” ferrocenyl dendrimers have not been suitable for this purpose.
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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 it