Conductive MOFs with Photophysical Properties: Applications and Thin-Film Fabrication

Abstract

HIGHLIGHTS • An overview on photophysical properties of conductive metal-organic frameworks (MOFs) including photoconductivity and photoluminescence is provided. • Miscellaneous applications of MOFs with photophysical properties are discussed. • Recent advances in integration of photoactive MOFs with practical devices are summarized. ABSTRACT Metal-organic frameworks (MOFs) are a class of hybrid materials with many promising applications. In recent years, lots of investigations have been oriented toward applications of MOFs in electronic and photoelectronic devices. While many high-quality reviews have focused on synthesis and mechanisms of electrically conductive MOFs, few of them focus on their photophysical properties. Herein, we provide an in-depth review on photoconductive and photoluminescent properties of conductive MOFs together with their corresponding applications in solar cells, luminescent sensing, light emitting, and so forth. For integration of MOFs with practical devices, recent advances in fabrication of photoactive MOF thin films are also summarized.

Berlin Green Framework-Based Gas Sensor for Room-Temperature and High-Selectivity Detection of Ammonia

“…Metal organic frameworks (MOFs) are a class of materials, whose crystalline is in framework structure constructed by connecting metal center with organic linker [13][14][15][16]. Such structure offers ultrahigh specific surface areas, regular and tunable pores, and open metal sites to molecules, rendering MOFs very attractive for improving gas sensing performance [17][18][19][20][21][22]. Campbell et al have reported that conductive 2D MOFs can be utilized as active materials for detecting volatile organic compounds (VOCs) and a sensor array based on MOFs with well-designed structure is able to discriminate different VOCs [17].…”

“…Yao et al have deposited ZIF-CoZn (an analogue of ZIF-8) on ZnO nanowire array to fabricate a sensor showing better performance to acetone with interference of humidity [19]. Additionally, a Janus nanostructure of Au@ ZnO@ ZIF-8 has been prepared and shows fast response to formaldehyde at room temperature [20]. Li et al have prepared various kinds of MOFs which show outstanding gas performance to formic acid as well as ammonia and ammines [23][24][25].…”

An asymmetric Salamo-based Zn complex supported on Fe3O4 MNPs: a novel heterogeneous nanocatalyst for the silyl protection and deprotection of alcohols under mild conditions

“…33,34 The use of nanostructured heterogeneous catalysts in organic transformations has recently been very exciting owing to their catalytic efficiency and selectivity. [35][36][37][38][39][40] Furthermore, 2D materials have become an important platform to design numerous single-atom catalysts for diverse chemical reactions, such as N 2 reduction, CO 2 reduction, and CO oxidation. [41][42][43][44][45][46][47][48][49][50][51][52] The ease of isolation and separation of the heterogeneous catalysts from the desired organic product and the recyclability and reusability further enhanced the sustainability of the catalysts.…”

Novel n‐p‐n heterojunction of AgI/BiOI/UiO‐66 composites with boosting visible light photocatalytic activities

“…[ 22 ] With light irradiation, LMCT in MOFs can emerge because of the transfer of energy with the HOMO‐LUMO gap related closely to the band gap. [ 23,24 ] Fabrication inorganic semiconductors with MOFs have been proved to be a significant method to improve the charge carrier separation with at least three profitable factors: first, more paths for the photo‐induced electrons migration can be taken place with more semiconductors involved [ 25–27 ] ; second, high surface area of MOFs will lead to the enlargement of adsorption capacities to POPs; finally, photoactive particles of inorganic semiconductors can be well dispersed on MOFs, impacting the exposure between POPs and active sites.…”