Living Crystallization-Driven Self-Assembly of Polymeric Amphiphiles: Low-Dispersity Fiber-like Micelles from Crystallizable Phosphonium-Capped Polycarbonate Homopolymers
Bibliographic record
Abstract
Living crystallization-driven self-assembly (CDSA) is an ambient temperature-seeded growth method of increasing interest for the preparation of well-defined and structurally complex 1D and 2D core–shell nanoparticles from crystallizable block copolymer amphiphiles. Recent reports have demonstrated that crystallizable homopolymer amphiphiles also undergo living CDSA to yield 2D platelets, but this field is considerably less explored. Herein, we describe the living CDSA of poly(fluorene trimethylene carbonate) (PFTMC) homopolymers with a charged end group. Two homopolymers PFTMC n -[PPh 2 Me]I ( n = 12, 23), each with a cationic phosphonium chain-end, were synthesized and studied. From these precursors, high-aspect-ratio, low-dispersity 1D micelles of controlled length with a rectangular crystalline PFTMC core were formed. In addition, more complex nanoparticles were prepared such as linear block comicelles, including examples with alternating fluorescent segments, and branched comicelles. Linear hybrid assemblies of negatively charged spherical SiO 2 NPs on the positively charged surface of the 1D ribbons were also synthesized. In contrast to the 2D platelets formed from charge-capped homopolymers described in previous studies, the formation of 1D fiber-like assemblies in this work highlights the influence of the nature of the crystalline core on the observed micelle morphology.
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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) | 0.000 | 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 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".