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- Title
Proton-controlled molecular ionic ferroelectrics.
- Authors
Huang, Yulong; Gottfried, Jennifer L.; Sarkar, Arpita; Zhang, Gengyi; Lin, Haiqing; Ren, Shenqiang
- 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. Molecular ferroelectrics contain stimuli-responsive structure and ionic building blocks, promising for ionically tailored multifunctionality. Here, the authors report molecular ionic ferroelectrics exhibiting the coexistence of room-temperature ionic conductivity and ferroelectricity.
- Subjects
FERROELECTRIC crystals; ELECTRIC conductivity; FERROELECTRIC materials; ELECTRICAL resistivity; POLYELECTROLYTES; IONIC structure; PROTON transfer reactions; IONIC conductivity
- Publication
Nature Communications, 2023, Vol 14, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-023-40825-6