# Reproducible Chiroptical Activity from Aggregated Chiral Thienopyrroledione–Fluorene π‑Conjugated Polymers.

https://mdr.nims.go.jp/datasets/43426c5f-3588-4ddd-8929-e6f61618f3c8

## File

- [Reproducible chiroptical activity from aggregated chiral thienopyrroledione fluorene   conjugated polymers.pdf](https://mdr.nims.go.jp/filesets/b0be9db5-4cf8-4cd1-9bde-e53bffe37510/download) ([Detail](https://mdr.nims.go.jp/filesets/b0be9db5-4cf8-4cd1-9bde-e53bffe37510.md))
- [Revised_SI.pdf](https://mdr.nims.go.jp/filesets/7eaf85c4-c61e-4d8a-9322-fe251bb3eba6/download) ([Detail](https://mdr.nims.go.jp/filesets/7eaf85c4-c61e-4d8a-9322-fe251bb3eba6.md))
- [STAM-2026-0104_data.zip](https://mdr.nims.go.jp/filesets/e8900812-7535-43f6-a10f-07b6f77c3260/download) ([Detail](https://mdr.nims.go.jp/filesets/e8900812-7535-43f6-a10f-07b6f77c3260.md))

## Id

43426c5f-3588-4ddd-8929-e6f61618f3c8

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-06-19T01:57:38.824891Z

## Updated at

2026-06-19T04:05:19.608868Z

## Published at

2026-06-19T05:29:50.029506Z

## Doi

https://doi.org/10.48505/nims.6345

## First published url

https://doi.org/10.1080/14686996.2026.2680968

## Date published

2026-06-02

## Recorded date published



## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Reproducible Chiroptical Activity from Aggregated Chiral Thienopyrroledione–Fluorene
    π‑Conjugated Polymers.
  title_type: original
  lang: en

## Description

- description: Chiral π‑conjugated polymers have attracted considerable interest because
    their chiral aggregated structures can generate pronounced chiroptical responses.
    Here, we report the design, synthesis, and chiroptical characterization of fluorene
    – thienopyrroledione polymers bearing a single chiral center in each repeating
    unit, (R)- and (S)-PFTPD, prepared via direct arylation polycondensation to minimize
    structural defects. Although only weak chiroptical activity was observed in a
    solution, addition of 1‑butanol to CHCl3 solutions of the polymers induced the
    formation of stable aggregates that exhibited strong circular dichroism (CD) and
    circularly polarized luminescence (CPL). Systematic examination of the sample
    preparation parameters revealed that the mixing process critically influences
    the chiroptical properties. Dropwise addition of 1-butanol under controlled stirring
    provided the most reliable results, yielding highly reproducible CD spectra. Under
    these optimized conditions, the aggregates exhibited an average dissymmetry factor
    (|gabs|) of 1.5 × 10−2 and a CPL dissymmetry factor (|glum|) of 1.9 × 10−2. These
    values rank among the highest reported for π-conjugated polymer aggregates bearing
    only a single chiral source per repeat unit. This study demonstrates that precise
    control over the solvent-mixing process is essential for the reproducible emergence
    of chiroptical properties and highlights the chiral TPD unit as a promising platform
    for chiroptical polymer materials.
  description_type: abstract
  lang: en

## Creator

- name: Nao Suzuki
  role: author
  organization: University of Tsukuba
  department: a Institute of Pure and Applied Sciences
- name: Ziwei Hu
  role: author
- name: Sota Nakayama
  role: author
- name: Soh Kushida
  role: author
- name: Yohei Yamamoto
  role: author
- name: Wijak Yospanya
  role: author
- name: Reiko Oda
  role: author
- name: Takaki Kanbara
  role: author
- name: Junpei Kuwabara
  role: author

## Contact agent



## Publisher

organization: National Institute for Materials Science
ror: https://ror.org/

## Managing organization



## Keyword

- subject: Chiral π‑conjugated polymer
  schema: not_defined
- subject: thienopyrroledione
  schema: not_defined
- subject: circular dichroism
  schema: not_defined
- subject: circularly polarized luminescence
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Science and Technology of Advanced Materials
  issn: '14686996'
  volume: '27'
  article_number: '2680968 '

## Conference



## Related item



## Funding



## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: b0be9db5-4cf8-4cd1-9bde-e53bffe37510
  filename: Reproducible chiroptical activity from aggregated chiral thienopyrroledione
    fluorene   conjugated polymers.pdf
  content_type: application/pdf
  size: 8518722
  md5: 2ca66167f4d6f5c2429eb57a69a6cf24
- id: 7eaf85c4-c61e-4d8a-9322-fe251bb3eba6
  filename: Revised_SI.pdf
  content_type: application/pdf
  size: 2726396
  md5: 6a9b2cf56bc498014b8746adc542944f
- id: e8900812-7535-43f6-a10f-07b6f77c3260
  filename: STAM-2026-0104_data.zip
  content_type: application/zip
  size: 919554
  md5: c9e4c59aefd68c2a06d2e6a7e7d01cc1

## Thumbnail

fileset_id: b0be9db5-4cf8-4cd1-9bde-e53bffe37510
filename: Reproducible chiroptical activity from aggregated chiral thienopyrroledione
  fluorene   conjugated polymers.pdf