Layered Organic Metal Chalcogenides (OMCs): From Bulk to Two‐Dimensional Materials

Abstract

The modification of inorganic two‐dimensional (2D) materials with organic functional motifs is in high demand for the optimization of their properties, but it is still a daunting challenge. Organic metal chalcogenides (OMCs) are a type of newly emerging 2D materials, with metal chalcogenide layers covalently anchored by long‐range ordered organic functional motifs, these materials are extremely desirable but impossible to realize by traditional methods. Both the inorganic layer and organic functional motifs of OMCs are highly designable and thus provide this type of 2D materials with enormous variety in terms of their structure and properties. This Minireview aims to review the latest developments in OMCs and their bulk precursors. Firstly, the structure types of the bulk precursors for OMCs are introduced. Second, the synthesis and applications of OMC 2D materials in photoelectricity, catalysis, sensors, and energy transfer are explored. Finally, the challenges and perspectives for future research on OMCs are discussed.

1D Hybrid Semiconductor Silver 2,6-Difluorophenylselenolate

“…No distinct peak from other chemicals was observed including the diffraction peak from Ag (∼38.2°). Xray photoemission spectroscopy of the thin films of AgSePh-F 2 (2,6) showed signal from Ag, Se, and F (Figure S5), with a Ag/Se ratio of 1:0.9, agreeing within the experimental error to the chemical formula of AgSePh-F 2 (2,6).…”

“…13 Briefly, a solution of silver nitrate (AgNO 3 ) and the organic diselenide precursor was prepared in a mixture of 1-butylamine and toluene (Figure S1b) and was filtered and transferred into a small vial sealed inside a larger jar containing deionized water (Figure S1c). Over time, deionized water and the mixed organic solvent were slowly exchanged, resulting in the lower solubility of AgSePh-F 2 (2,6) and the formation of its submillimeter crystals that exhibited a needle-like shape (Figures 1a and S1d).…”

“…Substituting phenylselenolate for 2,6-difluorophenylselenolate induced a structural transition from 2D AgSePh to 1D chain-structured silver 2,6difluorophenylselenolate [AgSePh-F 2 (2,6)]. Both crystals and films of AgSePh-F 2 (2,6) in various organic solvents and acidic or basic solutions. Electronic structural calculations reveal AgSePh-F 2 (2,6) to be a 1D semiconductor with light effective masses of holes (0.20m 0 ) and electrons (0.26m 0 ) at the band edge, suggesting its potential utility in electronic and optoelectronic devices.…”

Two Dual-Function Zr/Hf-MOFs as High-Performance Proton Conductors and Amines Impedance Sensors

“…Its optical, electrical, and magnetic, properties extend the application of MOFs in chemical sensing. , MOFs have received extensive attention as novel electronic and optoelectronic devices, − especially as electrochemical sensors. , However, an ongoing challenge is the lack of effective signal transduction due to most MOFs being insulators. Fortunately, the emergence of multimetallic materials having electrical conductivity offers a probability to develop novel sensors based on multimetallic materials . Campbell et al.…”

“…Fortunately, the emergence of multimetallic materials having electrical conductivity offers a probability to develop novel sensors based on multimetallic materials. 44 Campbell et al used conductive 2D copper-based MOF for the first time in chemical resistance sensing of ammonia vapor, and this MOF showed excellent NH 3 gas sensitivity. 45 A few years later, some proton-conductive MOFs were prepared and had good application value in the sensing field.…”