Benzothiaoline Three-Coordinated Organoboron Compounds with a B═N Bond: Dual Emission and Temperature-Dependent Excimer Fluorescence
Bibliographic record
Abstract
A series of 2,2-disubstituted benzothiazoline-BMes 2 (Mes = mesityl) compounds containing a B═N bond have been prepared and fully characterized. Their photophysical properties were investigated by UV–vis and fluorescence spectroscopy, which revealed the presence of solvent- and concentration-dependent dual emission. On the basis of the spectroscopic data, the dual emission was assigned to monomer and excimer fluorescence of the molecule, respectively. Experimental and TD-DFT computational data indicated that the purple-blue monomer emission of these compounds is mainly from an intramolecular charge transfer (CT) transition between the benzo-sulfur moiety and the boron center. The yellow-green excimer emission is attributed to intermolecular interactions involving the benzo-sulfur unit. Furthermore, the excimer emission maxima of all compounds were found to be sensitive to temperature, shifting to lower energy with decreasing temperature, which illustrates the potential for this class of compounds to be used as luminescent thermometers.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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".