Seco José Manuel, San Sebastián Eider, Cepeda Javier, Biel Blanca, Salinas-Castillo Alfonso, Fernández Belén, Morales Diego P, Bobinger Marco, Gómez-Ruiz Santiago, Loghin Florin C, Rivadeneyra Almudena, Rodríguez-Diéguez Antonio
Department of Applied Chemistry, Chemistry Faculty, The University of the Basque Country UPV/EHU, 20018, Donostia-San Sebastián, Spain.
Department of Electronics and Computer Technology, University of Granada, Granada, Spain.
Sci Rep. 2018 Sep 26;8(1):14414. doi: 10.1038/s41598-018-32810-7.
We have synthesized a novel three-dimensional metal-organic-framework (MOF) based on the perylene-3,4,9,10-tetracarboxylate linker and potassium as metallic centre. We report the formation of this K-based MOF using conventional routes with water as solvent. This material displays intense green photoluminescence at room temperature, and displays an aggregation dependent quenching. Correlation of the optical properties with the crystalline packing was confirmed by DFT calculations. We also demonstrate its potential to build humidity actuators with a reversible and reproducible response, with a change of 5 orders of magnitudes in its impedance at about 40% relative humidity (RH). This 3D-MOF is based on an interesting perylene derivative octadentate ligand, a moiety with interesting fluorescent properties and known component in organic semiconductors. To the best of our knowledge, this is the first time to build such a printed and flexible actuator towards humidity with a reversible response, enabling precise humidity threshold monitoring.
我们基于苝-3,4,9,10-四羧酸酯连接体和钾作为金属中心合成了一种新型三维金属有机框架（MOF）。我们报道了使用水作为溶剂的传统路线形成这种基于钾的MOF。这种材料在室温下呈现强烈的绿色光致发光，并表现出聚集诱导猝灭。通过密度泛函理论（DFT）计算证实了光学性质与晶体堆积的相关性。我们还展示了其构建具有可逆和可重复响应的湿度致动器的潜力，在约40%相对湿度（RH）下其阻抗变化达5个数量级。这种三维MOF基于一种有趣的苝衍生物八齿配体，该部分具有有趣的荧光特性且是有机半导体中的已知成分。据我们所知，这是首次构建出具有可逆响应的用于湿度监测的印刷柔性致动器，能够实现精确的湿度阈值监测。
