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Proton-controlled molecular ionic ferroelectrics.

ABSTRACT: Molecular ferroelectric materials consist of organic and inorganic ions held together by hydrogen bonds, electrostatic forces, and van der Waals interactions. However, ionically tailored multifunctionality in molecular ferroelectrics has been a missing component despite of their peculiar stimuli-responsive structure and building blocks. Here we report molecular ionic ferroelectrics exhibiting the coexistence of room-temperature ionic conductivity (6.1 × 10^-5 S/cm) and ferroelectricity, which triggers the ionic-coupled ferroelectric properties. Such ionic ferroelectrics with the absorbed water molecules further present the controlled tunability in polarization from 0.68 to 1.39 μC/cm², thermal conductivity by 13% and electrical resistivity by 86% due to the proton transfer in an ionic lattice under external stimuli. These findings enlighten the development of molecular ionic ferroelectrics towards multifunctionality.

SUBMITTER: Huang Y

PROVIDER: S-EPMC10439891 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature

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Proton-controlled molecular ionic ferroelectrics.

Huang Yulong Y Gottfried Jennifer L JL Sarkar Arpita A Zhang Gengyi G Lin Haiqing H Ren Shenqiang S

Nature communications 20230819 1

Molecular ferroelectric materials consist of organic and inorganic ions held together by hydrogen bonds, electrostatic forces, and van der Waals interactions. However, ionically tailored multifunctionality in molecular ferroelectrics has been a missing component despite of their peculiar stimuli-responsive structure and building blocks. Here we report molecular ionic ferroelectrics exhibiting the coexistence of room-temperature ionic conductivity (6.1 × 10<sup>-5</sup> S/cm) and ferroelectricity ...[more]

PMID: 37598217

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