Selective Placement of Bromide and Pinacolboronate Groups about a Tellurophene: New Building Blocks for Optoelectronic Applications
Bibliographic record
Abstract
Selective protodeboronation of preformed phosphorescent di- and tetrapinacolboronate (BPin)-substituted tellurophenes controllably affords new tellurophene products that show photoluminescence or, in the case of tellurophenes lacking BPin groups at the 2,5-positions, nonemissive behavior; for comparison the protodeboronation of select thiophene and selenophenes is also reported. The resulting BPin-appended tellurophenes are promising candidates for postfunctionalization via Suzuki–Miyaura cross-coupling and can be effectively converted into their respective brominated tellurophene counterparts via treatment with excess CuBr 2 . It is expected from prior studies that these brominated tellurophenes will be suitable building blocks (and monomers) for the preparation of conjugated oligomers and polymers featuring narrower optical band gaps in relation to their lighter chalcogen analogues; in this regard preliminary Stille coupling chemistry is reported.
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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) | 0.002 | 0.001 |
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".