Bent-Core and Nematic Liquid Crystal Functionalized Gold Nanorods
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Bibliographic record
Abstract
Abstract Gold nanorods (GNRs) functionalized with trimethoxysilane terminated nematic or bent-core liquid crystals (LCs) are described. In the first step, cetyltrimethylammonium bromide (CTAB) surfactant-stabilized GNRs were prepared using a single step, non-seeding method. The CTAB capping on the GNRs was then replaced in a two-step process first by binding of mercaptopropyltrimethoxysilane followed by immobilization of the nematic or bent-core LC silane by a dehydration condensation. The final LC-decorated GNRs were characterized by UV-vis-NIR spectrophotometry, IR spectroscopy and transmission electron microscopy (TEM). The functionalized nanorods were found to be stable, well dispersible in non-polar organic solvents. The bent-core LC-capped GNRs exhibited only short-range self-assembly after slow evaporation of the solvent on TEM grids. However, the nematic LC-decorated rods displayed regular patterns of self-assembled GNRs on TEM grids after annealing the sample in the presence of an external magnetic field. Keywords: Bent-core liquid crystalnematicgold nanorodsself-assembly Acknowledgments This work was financially supported by the Province of Manitoba, the NSF through a Center for Chemical Innovation, the Natural Sciences and Engineering Research Council (NSERC) of Canada, the Canada Foundation for Innovation (CFI), the Manitoba Research and Innovation Fund (MRIF). We would also like to thank Andre Dufresne for assistance with TEM imaging.
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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 | 0.001 | 0.001 |
| 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 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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