Butler Keith T, Hendon Christopher H, Walsh Aron
Department of Chemistry, University of Bath , Claverton Down, Bath BA2 7AY, United Kingdom.
ACS Appl Mater Interfaces. 2014 Dec 24;6(24):22044-50. doi: 10.1021/am507016r. Epub 2014 Dec 12.
The study of metal-organic frameworks has largely been motivated by their structural and chemical diversity; however, these materials also possess rich physics, including optical, electronic, and magnetic activity. If these materials are to be employed in devices, it is necessary to develop an understanding of their solid-state behavior. We report an approach to calculate the effect of strain on the band structure of porous frameworks. The origin of the bidirectional absolute deformation potentials can be described from perturbations of the organic and inorganic building blocks. The unified approach allows us to propose several uses for hybrid materials, beyond their traditionally posited applications, including gas sensing, photoelectrochemistry, and as hybrid transistors.
金属有机框架材料的研究很大程度上是受其结构和化学多样性的驱动;然而,这些材料还具有丰富的物理性质,包括光学、电子和磁活性。如果要将这些材料应用于器件中,就有必要深入了解它们的固态行为。我们报告了一种计算应变对多孔框架能带结构影响的方法。双向绝对形变势的起源可以从有机和无机结构单元的微扰来描述。这种统一的方法使我们能够提出混合材料除传统应用之外的几种用途,包括气体传感、光电化学以及作为混合晶体管。