Resonant Tender X-ray Scattering for Disclosing the Backbone Conformation of Conjugated Polymers Article Swipe
Yunfei Wang
,
Ka Hung Chan
,
Guillaume Freychet
,
Patryk Wąsik
,
Song Zhang
,
Zhiqiang Cao
,
Xiaodan Gu
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1021/acs.macromol.4c03107
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1021/acs.macromol.4c03107
The backbone conformation of conjugated polymers (CPs) is essential to their performance in electronic applications. Contrast-variation small-angle neutron scattering (CV-SANS) techniques were used to assess the CP’s backbone conformation, which relies on synthesis of deuterated polymers. Such a technique has been proven mature and effective. One drawback is that deuteration labeling might subtly alter polymer’s physical properties due to structural modifications. To address these challenges, we introduce a novel approach utilizing tender X-ray scattering near the sulfur K-edge to distinctly evaluate the backbone versus whole chain conformation for a low-bandgap donor-acceptor CP, poly[(5,6-difluoro- 2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3‴-dialkyl-2,2′;5′,2″;5″,2‴-quaterthiophen-5,5‴-diyl)] (PffBT4T). For PffBT4T dissolved in trimethylbenzene (TMB), the sulfur K-edge is identified at approximately 2477 eV using near-edge X-ray absorption fine structure spectroscopy (NEXAFS). Tender X-ray scattering conducted at presulfur K-edge and on-sulfur K-edge at elevated temperatures facilitated the distinction between the backbone and whole chain conformations. The results demonstrate that for highly flexible polymer, the backbone’s persistence length could be lower than that of the whole chains, suggesting a more flexible backbone. This rapid, label-free method enhances our ability to characterize CP’s backbone conformation efficiently, offering significant implications for the design and optimization of CPs for advanced electronics.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1021/acs.macromol.4c03107
- OA Status
- hybrid
- Cited By
- 1
- References
- 41
- Related Works
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- OpenAlex ID
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- OpenAlex ID
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https://openalex.org/W4411670981Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1021/acs.macromol.4c03107Digital Object Identifier
- Title
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Resonant Tender X-ray Scattering for Disclosing the Backbone Conformation of Conjugated PolymersWork title
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2025Year of publication
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2025-06-26Full publication date if available
- Authors
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Yunfei Wang, Ka Hung Chan, Guillaume Freychet, Patryk Wąsik, Song Zhang, Zhiqiang Cao, Xiaodan GuList of authors in order
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https://doi.org/10.1021/acs.macromol.4c03107Publisher landing page
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YesWhether a free full text is available
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hybridOpen access status per OpenAlex
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https://doi.org/10.1021/acs.macromol.4c03107Direct OA link when available
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Conjugated system, Polymer, Scattering, X-ray, Chemistry, Crystallography, Polymer chemistry, Materials science, Optics, Physics, Organic chemistryTop concepts (fields/topics) attached by OpenAlex
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1Total citation count in OpenAlex
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2025: 1Per-year citation counts (last 5 years)
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10Other works algorithmically related by OpenAlex
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