Bright blue luminescent pyrenyl-containing organosilicon compounds with contrasting charge transport functionality — SiPh<sub>2</sub>(<i>p</i>-C<sub>6</sub>H<sub>4</sub>-pyrenyl)(<i>p</i>-C<sub>6</sub>H<sub>4</sub>-<i>N</i>-benzimidazolyl) and SiPh<sub>2</sub>(<i>p</i>-C<sub>6</sub>H<sub>4</sub>-pyrenyl)[<i>p</i>-C<sub>6</sub>H<sub>4</sub>-NPh(1-naph)]
Bibliographic record
Abstract
The authors investigated the impact of electron-transport and hole-transport functional groups on the properties and the performance of blue luminescent organosilicon compounds as bifunctional materials in organic light-emitting devices. Two new pyrenyl-containing organosilicon compounds, SiPh2(p-C6H4-pyrenyl)(p-C6H4-N-benzimidazolyl) (1) and SiPh2(p-C6H4-pyrenyl)[p-C6H4-NPh(1-naph)] (2) were synthesized. Both compounds display bright blue luminescence in solution and in the solid state with a high quantum efficiency, but they have contrasting electroluminescent properties. The presence of the benzimidazolyl group in 1 enables it to function as a bifunctional material (blue emitter and electron transporter) in OLEDs. An efficient triple-layer (CuPc/NPB/1) blue OLED (C.I.E. 0.15, 0.14) was fabricated successfully. The presence of the NPh(1-naph) group in 2 enables its use as an effective transparent hole injection material, but not a blue emitter in OLEDs.Key words: organosilicon compounds, synthesis, luminescence, electroluminescence, devices.
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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".