Fluorescent, Thermoresponsive Oligo(ethylene glycol) Methacrylate/9-(4-Vinylbenzyl)-9<i>H</i>-carbazole Copolymers Designed with Multiple LCSTs via Nitroxide Mediated Controlled Radical Polymerization
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
9-(4-Vinylbenzyl)-9 H -carbazole (VBK) was used as the “controlling” comonomer for nitroxide mediated polymerization with 10 mol % SG1 free nitroxide relative to BlocBuilder initiator at 80 °C of oligo(ethylene glycol) methyl ether methacrylate (8–9 ethylene glycol (EG) units) (OEGMA 8–9 ), 2-(2-methoxyethoxy)ethyl methacrylate (MEO 2 MA) and for an OEGMA 8–9 /MEO 2 MA-mixed feed. The synthesis of MEO 2 MA/VBK and OEGMA 8–9 /VBK copolymers and MEO 2 MA/OEGMA 8–9 /VBK terpolymers exhibited linear increases in number-average molecular weight ( M̅ n ) versus conversion X, up until X = 0.6, with final copolymers characterized by relatively narrow, monomodal molecular weight distributions ( M̅ w / M̅ n < 1.4, in most cases). A series of MEO 2 MA/OEGMA 8–9 /VBK terpolymers were synthesized and by varying the OEGMA 8–9:MEO 2 MA feed ratios, the terpolymers exhibited tunable lower critical solution temperatures in water (28 °C < LCST s < 81 °C). MEO 2 MA/OEGMA 8–9 /VBK terpolymers were deemed sufficiently pseudo-“living” to reinitiate a second batch of MEO 2 MA/OEGMA 8–9 /VBK, with few apparent dead chains, as indicated by the monomodal shift in the GPC chromatograms. The resulting MEO 2 MA/OEGMA 8–9 /VBK block copolymers were designed so that each block exhibited a distinct LCST, which was confirmed by UV–vis and dynamic light scattering. In addition to controlling the terpolymerization, the VBK units imparted thermo-responsive fluorescence into the final copolymers.
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.
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) | 0.001 | 0.001 |
| 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) | 0.001 | 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 it