Van der Waals Nanocapsular Complexes of Amphiphilic Calixarenes
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Bibliographic record
Abstract
The inclusion complexes of p -alkanoyl calix[4]arenes with alkanoyl chain lengths from C4 to C10 (C4OH−C10OH) and tetrahydrofuran, dioxane, and some halocarbons as guests were prepared and their structures were studied by single-crystal X-ray diffraction, TGA, DSC, and 13 C CP-MAS NMR. The complexes of C6OH are nanocapsules stabilized by van der Waals interactions between the calixarene cavity as extended by the alkanoyl chains and one or more guest molecules. The stability of the nanocapsule compounds depends strongly on the size and saturation vapor pressure of the guests, as well as on the presence of halogen atoms in the guest molecule. In the presence of the latter, the C6OH capsular complexes have markedly lower stability and easily eject the guests. C4OH calixarene prefers to form open-container type complexes, whereas it is possible to prepare quasicapsular complexes of C10OH with dioxane as a guest. In this case, two dioxane molecules are encapsulated by two molecules of calixarene and the third dioxane molecule provides interlayer stabilization of the crystal lattice by hydrogen bonding of dioxane oxygens with OH groups of the neighboring calixarenes. The general trends in the formation and stability of van der Waals capsular complexes of amphiphilic calixarenes are discussed, as well as how they relate to the formation of solid lipid nanoparticles.
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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) | 0.001 | 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