Fluorescein-Nano TiO_2 Interface Complexion and Photo-Induced Electron Transfer
Bibliographic record
Abstract
This paper reports the complexion of TiO2 with fluorescein dianion(F2-) in ethanol-water under neutral pH condition.We found that F2--TiO2 complex showed very different spectral behavior from that of H3F+-TiO2 formed under strong acidic system.F2--TiO2 is 30 nm red shifted in absorption,it also emits fluorescence.The binding constant of the complex was measured to be 470 L·mol-1 by UV-Vis absorption spectrum.The fluorescence quantum yield(Φf) and fluorescence lifetime(τf) of F2-moiety in the complex were measured to be 0.14 and 1.08 ns by steady state and time-resolved fluorescence spectrometer,respectively,remarkably reduced from that of free F2-(Φf=0.92,τf=4.68 ns) due to photo-induced electron transfer(PET) within the complex.PET is highly favored by the thermodynamic driving force(ΔG=-1.1 eV).The rate constant of PET is 7.1×108 s-1,which is three times larger than other competitive processes.PET efficiency is calculated to be 77%.
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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".