Synthesis, structure, and luminescent properties of oligothiophene-containing metal–organic frameworks
Why this work is in the frame
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Bibliographic record
Abstract
Metal–organic frameworks (MOFs) based on Zn and functionalized bithiophene dicarboxylic acids are reported, [Zn2(L1)2(DMA)2·3 DMF]n (1), [Zn(L2)(DMA)2]n (2), [Zn(L3)(bpe)0.5]n (3), [Zn(L1)(bpe)·2 DMF]n (4), and [Zn3(L2)3(bpe)2·4 DMF · H2O]n(5) (H2L1 = 3,3′-diphenyl-2,2′-bithiophene-5,5′-dicarboxylic acid, H2L2 = 3,3′-dihexyl-2,2′-bithiophene-5,5′-dicarboxylic acid, H2L3 = 2,2′-bithiophene-5,5′-dicarboxylic acid, DMA = dimethylamine, DMF = N,N-dimethylformamide, bpe = trans-1,2-bis(4-pyridyl)ethylene). MOFs 1, 2, and 4 consist of 2-D 4-connected sheets while 3 and 5 are 3-D interpenetrated networks with pcu and (4,6)-connected seh topology, respectively. The emission spectra and lifetimes of 1–5 have been determined: 4 and 5 exhibit reduced emission relative to 1 and 2, respectively, attributed to energy transfer quenching by the bpe, whereas 3 does not exhibit a reduction in emission intensity. Solid state lifetime measurements of 1–5 show that the emission decays are similar to those of the constituent ligands.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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 | 0.001 |
| 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