Tetra(4‐hexylphenyl) [3]‐ and [5]Cumulenes
Bibliographic record
Abstract
ABSTRACT The synthesis of [3]‐ and [5]cumulenes bearing 4‐hexylphenyl endgroups, [3]PhHex and [5]PhHex , has been developed. The incorporation of alkyl groups is designed to enhance film formation by improving solubility. Although tetraaryl[3]cumulenes are typically quite stable, the head‐to‐tail dimerization of [3]PhHex is observed after prolonged storage under ambient conditions, and the dimer is characterized crystallographically. The crystallographic analysis of [5]PhHex in comparison with other tetraaryl[5]cumulenes demonstrates changes in packing as a function of increasing size of the alkyl group. Preliminary characterization of field‐effect transistors fabricated with [3]PhHex , in comparison with the parent compound tetraphenyl[3]cumulene [3]Ph , shows poorer performance for [3]PhHex and emphasizes the need to optimize film‐forming protocols for new cumulenic semiconductors.
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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) | 0.001 | 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 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".