Enthalpy of the Complexation in Electrolyte Solutions of Polycations and Polyzwitterions of Different Structures and Topologies
Bibliographic record
Abstract
Our understanding of the intricate complexation behavior of polyzwitterions with polycations is less than that of polyanion–polycation complexes. In addition, the effect of the topology of polyzwitterions on the complexation of polyzwitterions with polycations is also unclear. We investigated the complexation of methacrylate-based linear, star, and branched poly(sulfobetaine methacrylate)s (PB) with the cationic poly(methacryl oxyethyl trimethylammonium chloride) (PMOTAC), as well as the complexation of linear imidazolium-based polyzwitterions and polycations, by isothermal titration calorimetry (ITC) in saline media. The complexation enthalpies increased with increasing salt concentration and molecular weight up to 0.25 M NaCl. A low degree of branching had little effect on the complexation, whereas highly branched PB did not form complexes. The obtained complexes had nonstoichiometric composition, with high enthalpies per mole of injected polycation due to additional water being released by cascading complexation. Understanding the complexation behavior of polyzwitterions with polycations provides alternatives to traditional polyanion–polycation complexes.
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How this classification was reachedexpand
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".