Microfluidic Synthesis of Photoresponsive Spool-Like Block Copolymer Nanoparticles: Flow-Directed Formation and Light-Triggered Dissociation
Bibliographic record
Abstract
We demonstrate flow-directed production of nanoparticles of the photoresponsive block copolymer poly( o -nitrobenzyl acrylate)- b -polydimethylacrylamide in a gas–liquid microfluidic reactor. Microfluidic formation produced a variety of morphologies dependent on flow rate, with spheres and short cylinders, then large compound micelles, then unique spooled cylinders appearing as flow rate increased. The higher excess free energy of spooled cylinders relative to the quiescent equilibrium state is evidenced by their faster off-chip relaxation times (∼1 day) as compared to other flow-directed structures. Comparison of light-triggered dissociation of flow-directed nanoparticles prepared at two different flow rates shows faster disruption of nanoparticles prepared at the higher flow rate. The application of variable flow to direct both structure and responsivity suggests interesting possibilities for controlled microfluidic manufacturing of “smart” polymeric colloids.
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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 | 0.000 |
| 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) | 0.000 | 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".