A water-soluble fluorescent chemosensor based on Asp functionalized naphthalimide for successive detection Fe<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup>
Bibliographic record
Abstract
The selective recognition of target ions in water is very important and the development of novel water-soluble chemosensor is still an intriguing challenge. Herein, a novel water-soluble fluorescent sensor based on aspartic acid (Asp) functionalized 1,8-naphthalimide derivative (Asp-NI) has been designed and synthesized. The sensor Asp-NI could dissolve in water and successively detect Fe 3+ and H 2 PO 4 − in water solution with high selectivity and sensitivity. The detection limits are 4.97 × 10 −7 mol/L for Fe 3+ and 5.27 × 10 −6 mol/L for H 2 PO 4 − . Other coexistent competitive metal ions (Hg 2+ , Ag + , Ca 2+ , Cu 2+ , Co 2+ , Ni 2+ , Cd 2+ , Pb 2+ , Zn 2+ , Cr 3+ , and Mg 2+ ) showed no interference in the Fe 3+ detection process. The sensor Asp-NI could act as a Fe 3+ and H 2 PO 4 − controlled “On–Off–On” fluorescent switch. More interestingly, the Fe 3+ induced fluorescence quenching process could be totally reversed by the addition of H 2 PO 4 − , this “On–Off–On” switching process could be repeated several times with little fluorescence loss. Notably, the actual usage of sensor Asp-NI was further demonstrated by test kits.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| 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 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".