Near‐Room‐Temperature Synergetic Response of Magnetism, Dielectricity and Luminescence Based on (C₅NH₁₃Cl)₂MnBr₄

Abstract

Multifunctional materials with working temperatures near room temperature are crucial for practical applications. Until now, it is still a great challenge to obtain such materials. In this paper, a complex of (C 5 NH 13 Cl) 2 MnBr 4 (1) with a structural phase transition near room temperature is reported. The phase transition induces switchable magnetic properties, dielectric anomalies and luminescent response over the same range of temperatures. It is the first time the synergetic effect of magnetism, dielectricity and luminescence near room temperature have been observed in the same molecular complex.

Molecular ferroelectric with low-magnetic-field magnetoelectricity at room temperature

“…Since it occurs in the paramagnetic region, it can not be attributed to the magnetic phase transition. Instead, it should be associated with the ferroelectric structural phase transition, which can also affect the magnetic susceptibilities subtly 14,27 .…”

“…These molecular materials can possess the advantages of both organic and inorganic species within a single phase 19,20 . Moreover, they can be readily modified and optimized by manipulating their specific functional groups 14,21,22 . However, it is important to acknowledge the limitations of molecular ferroelectric and ferromagnetic materials.…”

High temperature synergistic response of magnetism, dielectricity, and luminescence in a Mn(ii)-based molecular organic–inorganic hybrid

“…31 Recently, our group reported a (C 5 NH 13 Cl) 2 MnBr 4 compound showing magnetic, dielectric and luminescence synergistic response near room temperature. 32 Therefore, choosing the right metal ions and ammonium cations to construct OIH materials will greatly improve the chances of assembling multifunctional materials.…”

Manganese-Based Halogen Regulation Enhances Photoluminescence Efficiency Engineering

“…Compared to other transition metal ions Zn 2+ and Cu 2+ , Mn-based organic–inorganic hybrid halides not only have the advantage of low raw material cost but also exhibit a unique tunable luminescent color, making them an emerging material with fascinating optical, electronic, mechanical, and other properties. − By selecting appropriate organic and inorganic components, three-dimensional (3D), two-dimensional (2D), one-dimensional (1D), and zero-dimensional (0D) structures can be obtained. Compared to high-dimensional materials, low-dimensional (0D/1D) hybrids have a higher exciton binding energy and generation energy, thus exhibiting excellent luminescence efficiency and stability. − Generally, tetrahedral-coordinated Mn 2+ emits green light, while octahedral-coordinated Mn 2+ emits red light. , As an example, Chen et al reported that the 0D Mn-based hybrid (PPh 4 ) 2 MnBr 4 displays efficient green emission and successfully prepared organic light-emitting diodes, indicating outstanding electroluminescent properties of the material . Xiong et al prepared a series of 1D Mn-based perovskite materials with octahedral geometry and strong red emission. − In addition, Ma et al reported an efficient X-ray scintillator of the 0D hybrid (C 38 H 34 P 2 )­MnBr 4 , with a green emission peak of 517 nm and PLQYs of 95% .…”