Reproducible chiroptical activity from aggregated chiral thienopyrroledione–fluorene π‑conjugated polymers
Nao Suzuki, Ziwei Hu, Sota Nakayama, Soh Kushida, Yohei Yamamoto, Wijak Yospanya, Reiko Oda, Takaki Kanbara, Junpei Kuwabara · 2026
Read Reproducible chiroptical activity from aggregated chiral thienopyrroledione–fluorene π‑conjugated polymers by Nao Suzuki, Ziwei Hu, Sota Nakayama, Soh Kushida, Yohei Yamamoto, Wijak Yospanya, Reiko Oda, Takaki Kanbara, Junpei Kuwabara (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13292314.txt.
Description
Nao Suzuki and co-authors report chiral light-handling polymers whose effects depend on careful mixing, in a 2026 study. The polymers join fluorene and thienopyrroledione units, each repeat carrying one handed center. They were built by direct arylation coupling to keep defects low. Dissolved alone, the chains showed only faint optical handedness. Adding 1-butanol to the chloroform solution clumped the chains into stable aggregates.
Those aggregates answered polarized light strongly, both in absorption and in glowing emission. How the poor solvent was added mattered as much as the recipe itself. Slow dropwise addition with controlled stirring gave the most repeatable spectra. Dissymmetry factors near two hundredths ranked among the best for single-chirality polymers. The team says the mixing protocol, not just the molecule, secures reproducibility. Such materials could serve polarized-light devices and sensors. Their recipe-first lesson applies across aggregate-based optics.
Catalog record
| CREATOR | Nao Suzuki, Ziwei Hu, Sota Nakayama, Soh Kushida, Yohei Yamamoto, Wijak Yospanya, Reiko Oda, Takaki Kanbara, Junpei Kuwabara |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 35 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |