Enhancing dipole polarization loss in conjugated metal-organic frameworks via coordination symmetry breaking under electromagnetic field
Bibliographic record
Abstract
Modulating the dipole polarization loss in the single-atom region and establishing its direct relationship with the EWA performance remain an unmet challenge. Here, a dual-ligand modulation strategy, i.e., partially changing coordination atoms in the single-metal region (sMr), is introduced to effectively break the coordination symmetry of conjugated metal-organic frameworks (cMOFs), finally enhancing EWA property of cMOFs materials. Further, the asymmetrical sMr is experimentally found to elicit the dipole polarization loss, overcoming the handicaps of other electromagnetic wave loss mechanisms, which directly contribution to enhance EWA performance of this series of cMOFs. This strategy is further confirmed by replacing metal centers. Among studied series of cMOFs, Cu 2.25 /Co 0.75 (HHTP 1.67 HITP 0.33 ) achieves excellent EWA performance with an effective absorption bandwidth of 5.00 GHz and a reflection loss of −66.03 dB. We introduce a dual-ligand modulation strategy targeting single-metal regions within cMOFs here, aiming to achieve superior EWA performance through atomic-scale dipole polarization loss modulation. We hope our study can inspire more exploration to realize high-performance EWA materials.
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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) | 0.001 | 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 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".