Stabilization of MAPbBr3 Perovskite Quantum Dots on Perovskite MOFs by a One-Step Mechanochemical Synthesis.,Inorganic Chemistry

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Stabilization of MAPbBr3 Perovskite Quantum Dots on Perovskite MOFs by a One-Step Mechanochemical Synthesis.
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-01-07 , DOI: 10.1021/acs.inorgchem.9b03183
Darsi Rambabu ₁ , Sohini Bhattacharyya ₁ , Tarandeep Singh ₁ , Chakravarthy M L ₁ , Tapas Kumar Maji ₁

Affiliation

We report a one-step, solvent-free, green approach for the mechanochemical stabilization of hybrid organic-inorganic lead halide (MAPbBr3) perovskite quantum dots (PQDs) within perovskite metal-organic frameworks (MOFs) [MA-M(HCOO)3] [M = Mn and Co; MA = methylammonium (CH3NH3+)]. The perovskite MOF acts as a template and source of MA cations for growing and stabilizing hybrid PQDs. The synthesis of the composite has been carried out mechanochemically, without the use of any external reagents by simply grinding the perovskite MOF with PbBr2. MAPbBr3@MA-Mn(HCOO)3 composite shows high chemical stability in several solvents. Its excellent processability has been demonstrated by using it as an electrode material which shows photoelectrochemical activity in the presence of light.

中文翻译：

通过一步机械化学合成，在钙钛矿MOF上稳定MAPbBr3钙钛矿量子点。

我们报告了钙钛矿金属有机框架（MOFs）[MA-M（HCOO）3中的混合有机-无机卤化铅（MAPbBr3）钙钛矿量子点（PQDs）的机械化学稳定化的一步法，无溶剂方法。 ] [M = Mn和Co; MA =甲基铵（CH3NH3 +）]。钙钛矿型MOF充当MA阳离子的模板和来源，用于生长和稳定杂化PQD。通过简单地用PbBr2研磨钙钛矿型MOF，就可以用机械化学方法合成复合材料，而无需使用任何外部试剂。MAPbBr3 @ MA-Mn（HCOO）3复合材料在几种溶剂中显示出高化学稳定性。通过将其用作在光存在下显示光电化学活性的电极材料，已证明了其优异的加工性能。

更新日期：2020-01-07

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