Chiral 2D Halide Perovskites for Piezoelectric Energy Harvesting and Ultrasound Detection DOI Open Access
Hongtao Li, Xiangyong Zhao,

Hai‐Run Yang

et al.

European Journal of Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

Abstract Hybrid organic‐inorganic perovskite (HOIPs) has emerged as a great promising class of piezoelectric materials due to their solution processability, ease structural adjustment, and high piezoelectricity. However, date, energy application ultrasound detection been relatively unexplored. Here, pair chiral two‐dimensional (2D) HOIPs, R ‐/ S ‐[3MeOPEA] 2 PbBr 4 (3MeOPEA=1‐(3‐Methoxyphenyl) ethylamine), were synthesized, the structure, photoluminescence properties are reported. Our results demonstrate these exhibit consistent broad PL peaks under 360 nm excitation density functional theory (DFT) calculations reveal direct bandgap characteristic. Moreover, incorporation chirality into structure ‐ endows them with significant properties. 5 wt% /PDMS (polydimethylsiloxane) composite film can generate maximum open‐circuit voltages ( V oc ) 1.98 short circuit currents I sc 0.50 μA upon loading force N at 10 Hz. Additionally, device sensitively detect waves underwater varying distances 3, 6, 9 mm, corresponding peak‐to‐peak voltage p‐p responses 52.3 mV, 41.1 31.7 respectively. research broadens potential applications multifunctional 2D in fields harvesting ultra‐sound detection.

Language: Английский

Tuning ferroelectric phase transition temperature by enantiomer fraction DOI Creative Commons
Chang‐Chun Fan, Chengdong Liu, Bei‐Dou Liang

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Feb. 17, 2024

Abstract Tuning phase transition temperature is one of the central issues in materials. Herein, we report a case study using enantiomer fraction engineering as promising strategy to tune Curie ( T C ) and related properties ferroelectrics. A series metal-halide perovskite ferroelectrics S −3AMP) x R 1−x PbBr 4 was synthesized where 3AMP 3-(aminomethyl)piperidine divalent cation varies between 0 1 (0 = enantiomers; 0.5 racemate). With change fraction, , second-harmonic generation intensity, degree circular polarization photoluminescence, photoluminescence intensity materials have been tuned. Particularly, when 0.70 − 1, continuously linear tuning achieved, showing tunable range about 73 K. This provides an effective means insights for regulating chiroptical functional

Language: Английский

Citations

10
Chirality Triggered Biferroicity in a 3D Rubidium Based Perovskite DOI
Tong‐Yu Ju, Chang‐Chun Fan, Bei‐Dou Liang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(28)

Published: March 10, 2024

Abstract Multiferroics refer to materials with two or more ferroic orders in one phase within a specific temperature range, including ferroelectricity, ferroelasticity, and ferromagnetism which have been widely used sensors, actuators, memory devices. Among them, hybrid perovskites exhibiting multiferroicity are generally limited low dimensions (0D–2D). Designing 3D lead‐free perovskite multiferroics remains challenge due Goldschmidt's tolerance factor limitation. Here, multiferroic ( R ‐3AP)RbBr 3 1 ; 3AP = 3‐ammoniopyrrolidinium) is successfully synthesized by introducing homochirality the ferroelectric Rac , achieving both ferroelasticity ferroelectricity. Compound undergoes structure transition at 401 K belonging Aizu notation 432F2( s ), has 12 equivalent polarization directions 6 polar axes. Furthermore, exhibits reversible second harmonic generation switching effects. Moreover, while varies, rapid changes of ferroelastic domains observed using polarizing microscope, indicating that it material. This work provides practical method for designing synthesizing molecule‐based multiferroics.

Language: Английский

Citations

8
Homochirality to design high-Tc lead-free ferroelastic semiconductors DOI Creative Commons
Bowen Deng,

Zhi-Peng Rao,

Ming-Jing Shen

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(17), P. 6098 - 6105

Published: Jan. 1, 2024

High- T c lead-free ferroelastic semiconductor ( R / S -CTA) 2 SbCl 5 was obtained through an H/OH-substitution-induced homochirality strategy, and undergoes phase transition at 410 K accompanied by switching between the SHG-active SHG-inactive states.

Language: Английский

Citations

8
Utilizing Shear Piezoelectricity of Chiral Lead‐Free Metal Halides for Electromechanical Sensing DOI
Yong‐Ji Gong, Lian‐Cai An, Ying Zhang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(38)

Published: April 13, 2024

Abstract Chiral hybrid metal halides have emerged as a promising class of piezoelectric materials owing to their ease synthesis, low acoustic impedance, and solution processibility. However, many known chiral crystalize in structures with only shear piezoelectricity which is less facile be utilized compared the longitudinal piezoelectricity, largely preventing practical utility. In addressing this problem, lead‐free S‐ MPBiCl 5 R‐ (MP = 2‐methylpiperazinium) are synthesized thin films orientating along polarization direction fabricated. These orientated films, characterized by numerous grains compact grain boundaries, can effectively facilitate boundary sliding convert normal stress into stress, thus facilely activating piezoelectricity. The resulting devices accurately identify position type ultrasound sources without need for complex impedance matching layer. Moreover, these successfully sense delicate variations momentum caused table tennis balls. findings open up new pathway utilize that normally considered unuseful other molecular piezoelectrics.

Language: Английский

Citations

8
Elastic Relaxor Ferroelectric by Thiol‐ene Click Reaction DOI
Bowen Li, Linping Wang, Liang Gao

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(19)

Published: March 16, 2024

Abstract As ferroelectrics hold significance and application prospects in wearable devices, the elastification of becomes more important. Nevertheless, achieving elastic requires stringent synthesis conditions, while relaxor ferroelectric materials remains unexplored, presenting an untapped potential for utilization energy storage actuation electronics. The thiol‐ene click reaction offers a mild rapid platform to prepare functional polymers. Therefore, we employed this approach obtain by crosslinking intramolecular carbon‐carbon double bonds (CF=CH) polymer matrix with multiple thiol groups via reaction. resulting demonstrates pronounced relaxor‐type behaviour. This material exhibits low modulus, excellent resilience, fatigue resistance, maintaining stable response even under strains up 70 %. study introduces straightforward efficient construction ferroelectrics, thereby expanding possibilities

Language: Английский

Citations

6
Biodegradable Ferroelectric Molecular Plastic Crystal HOCH2(CF2)7CH2OH Structurally Inspired by Polyvinylidene Fluoride DOI
Yong Ai, Zhuxiao Gu, Peng Wang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(35)

Published: July 6, 2024

Ferroelectric materials, traditionally comprising inorganic ceramics and polymers, are commonly used in medical implantable devices. However, their nondegradable nature often necessitates secondary surgeries for removal. In contrast, ferroelectric molecular crystals have the advantages of easy solution processing, lightweight, good biocompatibility, which promising candidates transient (short-term) Despite these benefits, discovered biodegradable materials remain limited due to absence efficient design strategies. Here, inspired by polar structure polyvinylidene fluoride (PVDF), a crystal 1H,1H,9H,9H-perfluoro-1,9-nonanediol (PFND), undergoes cubic-to-monoclinic plastic phase transition at 339 K, is discovered. This facilitated 2D hydrogen bond network formed through O-H···O interactions among oriented PFND molecules, crucial manifestation properties. this sense, reducing number -CF

Language: Английский

Citations

5
Hybrid perovskite shows temperature-dependent photoluminescence and dielectric response triggered by halogen substitution DOI
Xiaotong Sun,

Hao‐Fei Ni,

Yi Zhang

et al.

Chinese Journal of Structural Chemistry, Journal Year: 2023, Volume and Issue: 43(6), P. 100212 - 100212

Published: Dec. 22, 2023

Language: Английский

Citations

13
Homochirality in Ferroelectrochemistry DOI
Hang Peng,

Jun‐Chao Qi,

Yu‐Si Liu

et al.

Chinese Journal of Chemistry, Journal Year: 2023, Volume and Issue: 42(10), P. 1133 - 1144

Published: Dec. 8, 2023

What is the most favorite and original chemistry developed in your research group? We originally proposed design principle for molecular ferroelectrics: ferroelectrochemistry, including quasi‐spherical theory, introduction of homochirality, H/F substitution. Ferroelectrochemistry changed blind search ferroelectrics into targeted chemical design, which will develop a new discipline. How do you get this specific field? Could please share some experiences with our readers? I have been devoted to field more than 20 years. In early stage, worked on non‐centrosymmetric metal‐organic complexes, are potential ferroelectrics. This laid foundation my further study Non‐centrosymmetric crystal symmetry only one necessary requirements ferroelectrics, must adopt 10 polar crystallographic point groups should also generally undergo symmetry‐breaking phase transitions. Due lack feasible method, discovery has long depended blindly searching. process like finding needle haystack. After years exploration field, fully understood Landau transition phenomenological Curie symmetry, Neumann from perspective, transforming design. Never give up no matter how much difficulty met, because maybe there an opportunity next second. important personality scientific research? Curiosity, divergent thinking, perseverance, team spirit, gratitude. supervise students? Emphasis independent problem‐solving abilities. Encourage students read professional books frequently while doing research. hobbies? What’s book(s)? Jogging, reading, swimming. My book The Journey West . Comprehensive Summary Molecular attracted tremendous attention past decades due their excellent ferroelectric performance superiorities easy processability, mechanical flexibility, good biocompatibility. However, great challenge relied search. situation recently, development ferroelectrochemistry by group. As major approach introducing facilitates crystallization materials groups, greatly improves probability being Various splendid properties precisely synthesized using efficient universal strategy. review, we summarize advances through strategy homochirality. Key Scientists

Language: Английский

Citations

10
Unconventional Inverse Temperature Symmetry Breaking in a Ferroelastic Crystal DOI

Yun‐Hui Yu,

Dan Lu,

Yong Yu

et al.

The Journal of Physical Chemistry C, Journal Year: 2025, Volume and Issue: 129(2), P. 1539 - 1545

Published: Jan. 6, 2025

Molecular ferroelastics have garnered significant attention due to their potential applications in the fields of shape memory devices, mechanical sensors, and switches. Despite great efforts elevate Tc, it remains a challenge design high-temperature meet requirements for practical applications. Here, we present an organic salt molecular ferroelastic crystal, [Piperazine][CH3SO3H]2 (CH-P), which undergoes structural phase transition at 383 K, characterized by unconventional inverse temperature symmetry breaking (ITSB) mechanism. CH-P retains its properties range. Crystallographic analysis reveals that displacement cations anions drives ITSB-induced transition. Additionally, H/F substitution on anion moieties leads substantial enhancement temperature, reaching up 512 K crystal [Piperazine][CF3SO3H]2 (CF-P). This work highlights concept designing above-room-temperature materials through ITSB phenomenon strategy.

Language: Английский

Citations

0
Reversible Ferroelectric Polarization Modulation of Chiral Molecular Ferroelectrics by Circularly Polarized Light DOI Creative Commons
Zhongxuan Wang, Qian Wang, Lina Quan

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Abstract The optical modulation of ferroelectric polarization constitutes a transformative, non‐contact strategy for the precise manipulation properties, heralding advancements in optically stimulated devices. Despite its potential, progress this domain is constrained by material limitations and intricate nature underlying mechanisms. Recent studies have achieved efficient regulation thermal conductivity chiral thin films through application left‐ right‐handed circularly polarized light (LCP RCP). Differential absorption (CPL) induces nonequilibrium carrier dynamics, generating distinctive interfacial electrostatic fields that enable control ultrathin films. For (R)‐BINOL−DIPASi (S)‐BINOL−DIPASi (C 26 H O 2 Si), changes surpass 23%, exhibiting opposite response under LCP RCP excitation. In R films, remnant decreases from 1.05 µC cm − to 0.85 RCP, whereas S increases 0.98 RCP. This reversible facilitates reliable switching between ON OFF states, presenting potential materials flexible, high‐speed integrated photonic sensor technologies.

Language: Английский

Citations

0