Departamento de Química, FFCLRP, Universidade de São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, SP, 14040-901, Brazil.
Advanced Technology Institute, University of Surrey, Guildford, Surrey, GU2 7XH, UK.
Nat Commun. 2017 Dec 15;8(1):2139. doi: 10.1038/s41467-017-02215-7.
Metal-organic frameworks (MOFs) have emerged as an exciting class of porous materials that can be structurally designed by choosing particular components according to desired applications. Despite the wide interest in and many potential applications of MOFs, such as in gas storage, catalysis, sensing and drug delivery, electrical semiconductivity and its control is still rare. The use and fabrication of electronic devices with MOF-based components has not been widely explored, despite significant progress of these components made in recent years. Here we report the synthesis and properties of a new highly crystalline, electrochemically active, cobalt and naphthalene diimide-based MOF that is an efficient electrical semiconductor and has a broad absorption spectrum, from 300 to 2500 nm. Its semiconductivity was determined by direct voltage bias using a four-point device, and it features a wavelength dependant photoconductive-photoresistive dual behaviour, with a very high responsivity of 2.5 × 10 A W.
金属-有机骨架（MOFs）作为一类新兴的多孔材料，具有根据特定应用选择特定组分进行结构设计的能力。尽管人们对 MOFs 有着广泛的兴趣和许多潜在的应用，如气体储存、催化、传感和药物输送、电半导体及其控制，但电半导体及其控制仍然很少见。尽管近年来这些组件取得了显著进展，但基于 MOF 的电子设备的使用和制造尚未得到广泛探索。在这里，我们报告了一种新的高度结晶、电化学活性、基于钴和萘二酰亚胺的 MOF 的合成和性质，该 MOF 是一种有效的电半导体，具有从 300 到 2500nm 的宽吸收光谱。其半导体性能是通过四点器件的直流偏压确定的，它具有波长依赖性光电导-光电阻双重行为，响应率非常高，达到 2.5×10^A W。
