Self-Immolative Polymers Containing Rapidly Cyclizing Spacers: Toward Rapid Depolymerization Rates
Why this work is in the frame
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Bibliographic record
Abstract
Self-immolative polymers containing 4-hydroxybenzyl alcohol alternating with either N -methylaminoethanol or 2-mercaptoethanol spacers were synthesized and demonstrated to controllably depolymerize in response to the cleavage of a stabilizing end-cap from the polymer termini. These new polymers depolymerized at much higher rates than the previously reported polymer containing an N, N ′-dimethylethylenediamine spacer, with the time scales for complete depolymerization reduced from days to hours. Herein, we report the design and synthetic strategies for incorporating both stronger nucleophilic and electrophilic sites to induce faster cyclization reactions, which are known to be the rate-limiting steps in the depolymerization of this class of self-immolative polymers. These modifications and results demonstrate that the proposed structure-to-property relationships translate to the development of new polymer backbones for applications that require rapid depolymerization rates.
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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 | 0.001 |
| 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 it