Dielectric and optical properties of a new organic-inorganic hybrid phase transition material

Crystal phase transformation is often accompanied by changes in corresponding physical properties. For instance, dielectric properties may undergo abrupt changes near the phase-transition temperatures. Currently, designing and synthesizing organic-inorganic hybrid materials with significant dielectr...

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Bibliographic Details
Published in:CrystEngComm 2023-07, Vol.25 (3), p.4284-4289
Main Authors: Zhang, Yinan, Cai, Zhuoer, Zhang, Xinyi, Xiao, Shiyue, Liu, Xianmin, Zhao, Yingyi, Hua, Xiu-Ni, Sun, Baiwang
Format: Article
Language:English
Subjects:
Anomalies
Dielectric properties
Optical properties
Phase transitions
Physical properties
Prohibition
Synthesis
Temperature
Transition temperature
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Summary:Crystal phase transformation is often accompanied by changes in corresponding physical properties. For instance, dielectric properties may undergo abrupt changes near the phase-transition temperatures. Currently, designing and synthesizing organic-inorganic hybrid materials with significant dielectric changes remains a field worth exploring. In this study, the compound [N(Et) 3 CH 2 Cl] 2 [MnCl 4 ] (compound 1 ) was synthesized and characterized. The compound exhibited a reversible phase transition at 320 K, and dielectric permittivity anomalies were found near the phase-transition temperature. The observed changes in the space group from P 1&cmb.macr; (2) at LTP (below the phase-transition temperature) to P 4 2 / nmc (137) at HTP (above the phase-transition temperature) also proved an order-disorder phase transition. Significantly, compound 1 was green, and strong emission at 520 nm could be observed under ultraviolet excitation, which can be attributed to the d-d transition of the spin-orbital prohibition produced by the cations. Both dielectric and fluorescence properties of compound 1 may find applications in the fields of switchable, dielectric, and luminescent materials. Dielectric and optical properties of an organic-inorganic hybrid phase transition material.
ISSN:1466-8033
1466-8033
DOI:10.1039/d3ce00454f