Zero-dimensional organic–inorganic hybrid manganese bromide with coexistence of dielectric–thermal double switches and efficient photoluminescence,Dalton Transactions

当前位置： X-MOL 学术 › Dalton Trans. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Zero-dimensional organic–inorganic hybrid manganese bromide with coexistence of dielectric–thermal double switches and efficient photoluminescence
Dalton Transactions ( IF 3.5 ) Pub Date : 2023-07-25 , DOI: 10.1039/d3dt01823g
Ling-Kun Wu ₁ , Qing-Hua Zou ₁ , Hai-Quan Yao ₁ , Heng-Yun Ye ₁ , Jian-Rong Li ₁

Affiliation

Zero-dimensional (0D) hybrid metal halides have attracted much attention due to their rich composition, excellent optical stability, large exciton binding energy, etc. Photoelectric switchable multifunctional materials can integrate multiple physical properties (e.g., ferroelectricity, photoluminescence, magnetic, etc.) into one device and are widely used in many fields such as smart switches, sensors, etc. However, multifunctional materials with thermal energy storage, stimulant dielectric response, and light-emitting properties are rarely reported. Here, we synthesized a new organic–inorganic hybrid metal halide single crystal [TEMA]₂MnBr₄ (1) (TEMA⁺ = triethylmethylammonium). Compound 1 undergoes a reversible phase transition at a high temperature of 344/316 K, having a large thermal hysteresis of 28 K and exhibits high stability dielectric switching characteristics near the phase transition temperature. The single crystal exhibits green emission at 513 nm under UV excitation, originating from the ⁴T₁g(G) → ⁶A₁g(S) transition of Mn²⁺ ions. Excitingly, this single crystal's photoluminescence quantum yield (PLQY) is as high as 80.78%. This work provides a strategy for the development of organic-inorganic hybrid optoelectronic multifunctional materials with high-efficient light emission and switchable dielectric properties.

中文翻译：

具有介电-热双开关共存和高效光致发光的零维有机-无机杂化溴化锰

零维（0D）杂化金属卤化物由于其丰富的成分、优异的光学稳定性、大的激子结合能等而备受关注。光电开关多功能材料可以将多种物理特性（如铁电、光致发光、磁性等）集成到一种器件中，广泛应用于智能开关、传感器等多个领域。然而，具有热能存储、刺激介电响应和发光特性的多功能材料却鲜有报道。在这里，我们合成了一种新型有机-无机杂化金属卤化物单晶[TEMA] ₂ MnBr ₄ ( 1 )（TEMA ⁺ =三乙基甲基铵）。化合物1在344/316 K的高温下发生可逆相变，具有28 K的大热滞后，并在相变温度附近表现出高稳定性的介电开关特性。该单晶在紫外激发下在513 nm处呈现绿光发射，源自Mn ²⁺离子的⁴ T ₁ g(G) → ⁶ A _{1 g(S)跃迁。}令人兴奋的是，该单晶的光致发光量子产率（PLQY）高达80.78%。这项工作为开发具有高效发光和可切换介电性能的有机-无机杂化光电多功能材料提供了策略。

更新日期：2023-07-25

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南