Molecular Engineering of the Physical Properties of Highly Luminescent π-Conjugated Phospholes
Bibliographic record
Abstract
The syntheses as well as detailed studies on the thermal, photophysical, and self-organization properties of a new series of phosphole-based ladder-type materials with exocyclic 5-alkylthienyl substituents are reported. The studies also include DFT calculations that provide support for the experimentally determined photophysics. In contrast to the related “phosphole-lipids” with fused conjugated head that exhibit low luminescence in solution but high luminescence in the solid state, the new system is highly luminescent in both solution and the solid state. The extensive structure–property study reported herein revealed that the physical properties of the new species can significantly be tuned via the size of the conjugated system of the head group, the functionalization of the phosphorus center, as well as the length of the thiophene-appended alkyl chain that impacts the intermolecular interactions via π–π stacking, ionic, and van der Waals interactions, respectively. This molecular engineering approach allows to access materials with intriguing properties that range from highly emissive oils to self-organized one-dimensional fibers.
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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".