On the Molecular Origin of the Red Emission in the Newly Synthesized Carbon‐Based Quantum Dots
Bibliographic record
Abstract
Abstract Carbon‐based quantum dots (QDs) represent a new family of luminescent nanomaterials with intriguing emission properties. They are synthesized predominately with the emission in the blue and green region of the visible spectrum, with limited success in producing red emission. Furthermore, the current literature on the subject lacks consensus with respect to the morphology of QDs. Contrary to their semiconductor counterparts, the data on the structure of fluorescing centers is scarce. Herein, we describe a facile one‐pot synthesis of red emissive QDs using citric acid and formamide as precursors without addition of any other source of nitrogen. The photophysical properties of the synthesized species were investigated by steady state and transient absorption and fluorescence spectroscopy. Some structural peculiarities were revealed using fluorescence correlation spectroscopy. Our findings show that the newly synthesized carbon‐based QDs, at least their emissive centers, are not part of nanoparticles but rather resemble small organic fluorophores. Furthermore, we have not eliminated the possibility that multiple fluorophores with different emission properties may be embedded within a single molecular entity.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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".