Laser Flash Photolysis Study of Two Aromatic <i>N</i>-Oxyimidosulfonate Photoacid Generators
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Bibliographic record
Abstract
In this paper we study the photophysical and photochemical behavior of two aromatic N -oxyimidosulfonate photoacid generators (PAGs), N -trifluoromethylsulfonyloxy-phthalimide (PIT) and N -trifluoromethylsulfonyloxy-1,8-naphthalimide (NIT), by means of absorption and emission stationary techniques and nanosecond and picosecond laser flash photolysis. Triplet states have been detected for both compounds; lifetimes of 12 μs and 43 μs (acetonitrile solution) and 2 μs and 28 μs, (benzene solution), were measured for PIT and NIT, respectively. Photoacid generation quantum yields have also been measured (Φ = 0.28 in acetonitrile, Φ = 0.21 in benzene for PIT; Φ = 0.17 in acetonitrile, Φ = 0.09 in benzene for NIT), using Rhodamine B Base as an acid sensor and 2-methyl-4,6-bis(trichloromethyl)-1,3,5-triazine as a suitable actinometer with 308-nm laser excitation. Evidence that photoacid generation occurs through an ionic mechanism from the singlet state was obtained.
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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) | 0.001 | 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) | 0.003 | 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 it