When dithiafulvenyl functionalized π-conjugated oligomers meet fullerenes and single-walled carbon nanotubes
Bibliographic record
Abstract
A series of π-conjugated oligomers taking linear and Z-shaped molecular structures were synthesized with electron-donating dithiafulvenyl (DTF) groups functionalized at the terminal positions. Besides significantly enriched electronic and redox properties as disclosed by UV-Vis absorption and voltammetric analyses, these DTF-endcapped oligomers also exhibited a facile reactivity of oxidative CC bond cleavage sensitized by fullerenes under air, converting the non-fluorescent DTF–oligomers to highly fluorescent aldehyde-endcapped oligomer products. This reaction provides an appealing approach for efficient fluorescence turn-on sensing of fullerenes. Furthermore, the DTF-attached oligomers showed strong noncovalent interactions with single-walled carbon nanotubes (SWNTs) to form soluble supramolecular assemblies in certain chlorinated organic solvents such as methylene chloride and chloroform. The dispersion of SWNTs effected by the DTF–oligomers was found to be highly efficient (up to 0.29 mg of SWNTs per mL) and shows selectivity for small-diameter nanotubes. The resulting SWNT suspensions could be easily dissociated upon addition of hydrocarbon solvents such as hexanes, releasing pristine SWNTs which were free of oligomer dispersants after filtration and solvent rinsing.
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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) | 0.007 | 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".