Pechmann Dye‐Containing Diketopyrrolopyrrole‐Based Stretchable Polymer Semiconductors
Bibliographic record
Abstract
Abstract Conjugated polymer design via random terpolymerization with irregular backbones has emerged as a strategy for stretchable organic electronics, requiring diverse molecular architectures to balance charge carrier mobility ( μ ) and stretchability. In this study, diketopyrrolopyrrole (DPP)‐based conjugated polymers with 0%, 5%, and 10% Pechmann dye (PDy) units, denoted as DP‐T0, DP‐T5, and DP‐T10, respectively, are introduced, and explore the impact of PDy on structural mobility and stretchability through experimental and computational analyses. Electrical measurements reveal hole mobilities ranging from 0.01 to 0.08 cm 2 V⁻¹ s⁻¹, with a slight decrease as PDy content increases. Stretchability tests indicate significant improvements in DP‐T5 and DP‐T10 due to their loosely packed lamellar structures. Notably, DP‐T5 achieves a crack onset strain ( ε c ) of 250% and a polarization dichroic ratio (PDR) of 2.4 under 200% strain, leading to a mobility ratio ( μ 200 / μ 0 ) exceeding 5. These results demonstrate that PDy incorporation enhances the mechanical stretchability of DPP‐based conjugated polymers while maintaining reasonable electronic performance. This work highlights the potential of PDy‐based random terpolymerization for developing stretchable polymer semiconductors.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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".