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Fluorine-free strongly dipolar polymers exhibit tunable ferroelectricity.

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Title: Fluorine-free strongly dipolar polymers exhibit tunable ferroelectricity.
Authors: Huang, Jiahao, Rui, Guanchun, Yan, Yueming, Allahyarov, Elshad, Kwok, Man-Hin, Zhu, Wenyi, Li, Li, Zhang, Shixian, Pan, Zhiliang, Li, Deyu, Zhang, Honghu, Mu, Richard R., Zhao, Bin, Wang, Qing, Taylor, Philip L., Haglund, Richard F., Zhang, Q. M., Zhu, Lei
Source: Science. 7/3/2025, Vol. 389 Issue 6755, p69-72. 4p.
Subjects: Ferroelectric polymers, Fluoropolymers, Difluoroethylene, Dipole-dipole interactions, Pyroelectricity
Abstract: Current research on ferroelectric polymers centers predominantly on poly(vinylidene fluoride) (PVDF)–based fluoropolymers because of their superior performance. However, they are considered "forever chemicals" with environmental concerns. We describe a family of rationally designed fluorine-free ferroelectric polymers, featuring a polyoxypropylene main chain and disulfonyl alkyl side chains with a C3 spacer: −SO2CH2CHRCH2SO2− (R = −H or −CH3). Both experimental and simulation results demonstrate that strong dipole-dipole interactions between neighboring disulfonyl groups induce ferroelectric ordering in the condensed state, which can be tailored by changing the R group: ferroelectric for R = −H or relaxor ferroelectric for R = −CH3. At low electric fields, the relaxor polymer exhibits electroactuation and electrocaloric performance comparable with those of state-of-the-art PVDF-based tetrapolymers. Editor's summary: The vast majority of ferroelectric polymers are based on poly(vinylidene fluoride) (PVDF) chemistry because of their superior performance. However, concerns about fluorine-based "forever chemicals" have encouraged searches for alternative materials. Huang et al. investigated the synthesis, structure, ferroelectricity, and electromechanical and electrocaloric effects of side-chain polymers without fluorine or mesogenic groups. They developed a relaxor ferroelectric liquid crystal polymer that features highly polar disulfonyl groups in which the side chains form a layered structure. Their material demonstrates superior electrostriction and electrocaloric properties at low electric fields comparable to state-of-the-art PVDF-based tetrapolymers. —Marc S. Lavine [ABSTRACT FROM AUTHOR]
Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Group: Ti
  Data: Fluorine-free strongly dipolar polymers exhibit tunable ferroelectricity.
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  Data: <searchLink fieldCode="AR" term="%22Huang%2C+Jiahao%22">Huang, Jiahao</searchLink><br /><searchLink fieldCode="AR" term="%22Rui%2C+Guanchun%22">Rui, Guanchun</searchLink><br /><searchLink fieldCode="AR" term="%22Yan%2C+Yueming%22">Yan, Yueming</searchLink><br /><searchLink fieldCode="AR" term="%22Allahyarov%2C+Elshad%22">Allahyarov, Elshad</searchLink><br /><searchLink fieldCode="AR" term="%22Kwok%2C+Man-Hin%22">Kwok, Man-Hin</searchLink><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Wenyi%22">Zhu, Wenyi</searchLink><br /><searchLink fieldCode="AR" term="%22Li%2C+Li%22">Li, Li</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Shixian%22">Zhang, Shixian</searchLink><br /><searchLink fieldCode="AR" term="%22Pan%2C+Zhiliang%22">Pan, Zhiliang</searchLink><br /><searchLink fieldCode="AR" term="%22Li%2C+Deyu%22">Li, Deyu</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Honghu%22">Zhang, Honghu</searchLink><br /><searchLink fieldCode="AR" term="%22Mu%2C+Richard+R%2E%22">Mu, Richard R.</searchLink><br /><searchLink fieldCode="AR" term="%22Zhao%2C+Bin%22">Zhao, Bin</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Qing%22">Wang, Qing</searchLink><br /><searchLink fieldCode="AR" term="%22Taylor%2C+Philip+L%2E%22">Taylor, Philip L.</searchLink><br /><searchLink fieldCode="AR" term="%22Haglund%2C+Richard+F%2E%22">Haglund, Richard F.</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Q%2E+M%2E%22">Zhang, Q. M.</searchLink><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Lei%22">Zhu, Lei</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science%22">Science</searchLink>. 7/3/2025, Vol. 389 Issue 6755, p69-72. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Ferroelectric+polymers%22">Ferroelectric polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Fluoropolymers%22">Fluoropolymers</searchLink><br /><searchLink fieldCode="DE" term="%22Difluoroethylene%22">Difluoroethylene</searchLink><br /><searchLink fieldCode="DE" term="%22Dipole-dipole+interactions%22">Dipole-dipole interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Pyroelectricity%22">Pyroelectricity</searchLink>
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  Label: Abstract
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  Data: Current research on ferroelectric polymers centers predominantly on poly(vinylidene fluoride) (PVDF)–based fluoropolymers because of their superior performance. However, they are considered "forever chemicals" with environmental concerns. We describe a family of rationally designed fluorine-free ferroelectric polymers, featuring a polyoxypropylene main chain and disulfonyl alkyl side chains with a C3 spacer: −SO2CH2CHRCH2SO2− (R = −H or −CH3). Both experimental and simulation results demonstrate that strong dipole-dipole interactions between neighboring disulfonyl groups induce ferroelectric ordering in the condensed state, which can be tailored by changing the R group: ferroelectric for R = −H or relaxor ferroelectric for R = −CH3. At low electric fields, the relaxor polymer exhibits electroactuation and electrocaloric performance comparable with those of state-of-the-art PVDF-based tetrapolymers. Editor's summary: The vast majority of ferroelectric polymers are based on poly(vinylidene fluoride) (PVDF) chemistry because of their superior performance. However, concerns about fluorine-based "forever chemicals" have encouraged searches for alternative materials. Huang et al. investigated the synthesis, structure, ferroelectricity, and electromechanical and electrocaloric effects of side-chain polymers without fluorine or mesogenic groups. They developed a relaxor ferroelectric liquid crystal polymer that features highly polar disulfonyl groups in which the side chains form a layered structure. Their material demonstrates superior electrostriction and electrocaloric properties at low electric fields comparable to state-of-the-art PVDF-based tetrapolymers. —Marc S. Lavine [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1126/science.ads4702
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      – Code: eng
        Text: English
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        PageCount: 4
        StartPage: 69
    Subjects:
      – SubjectFull: Ferroelectric polymers
        Type: general
      – SubjectFull: Fluoropolymers
        Type: general
      – SubjectFull: Difluoroethylene
        Type: general
      – SubjectFull: Dipole-dipole interactions
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      – SubjectFull: Pyroelectricity
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      – TitleFull: Fluorine-free strongly dipolar polymers exhibit tunable ferroelectricity.
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              Text: 7/3/2025
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