Color-Tunable and White-Light Luminescence in Lanthanide–Dicyanoaurate Coordination Polymers
Why this work is in the frame
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Bibliographic record
Abstract
The new lanthanide–dicyanoaurate coordination polymers [ n Bu 4 N] 2 [Ln(NO 3 ) 4 Au(CN) 2 ] (Ln = Sm, Dy) and Sm[Au(CN) 2 ] 3 ·3H 2 O were prepared and structurally characterized and their luminescence spectra described. The emissions of solid-solutions of [ n Bu 4 N] 2 [Ln(NO 3 ) 4 Au(CN) 2 ] (Ln = Ce, Sm, Eu, Tb, and Dy) were explored with an emphasis on their capacity for luminescent color tuning and white-light emission via the selection of composition, excitation wavelength, and temperature. Specifically, the binary solid-solutions [ n Bu 4 N] 2 [Ce 0.4 Dy 0.6 (NO 3 ) 4 Au(CN) 2 ] and [ n Bu 4 N] 2 [Sm 0.75 Tb 0.25 (NO 3 ) 4 Au(CN) 2 ], and the ternary solid-solutions [ n Bu 4 N] 2 [Ce 0.2 Sm 0.6 Tb 0.2 (NO 3 ) 4 Au(CN) 2 ] and [ n Bu 4 N] 2 [Ce 0.33 Eu 0.17 Tb 0.5 (NO 3 ) 4 Au(CN) 2 ], were prepared and examined in terms of suitability for color-tuning capacity. These results showcase that the emission from the [ n Bu 4 N] 2 [Ln(NO 3 ) 4 Au(CN) 2 ] framework has the capacity to be tuned to extremes corresponding to deep reds (CIE coordinates 0.65, 0.35), greens (0.28, 0.63), and deep blue/violet (0.16, 0.06) as well as white (0.31, 0.33). Conversely, the emission of the Sm[Au(CN) 2 ] 3 ·3H 2 O framework, when doped with the green phosphor Tb(III), changes only slightly because of the predominantly Au(I)-based emission and Sm(III) → Au(I) energy transfer.
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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 | 0.000 | 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) | 0.002 | 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