Dual Emissions and Thermochromic Luminescence Behavior of Chloroplumbate Organic–Inorganic Hybrid Crystals

Abstract

Two hybrids, [BMIP][Pb 2 Cl 6 ] (1) and [BMIP] [Pb 1.5 Cl 5 ]· H 2 O (2) {BMIP 2+ = 1,3-bis(1-methylimidazolium)propane}, are achieved by mutual diffusion of inorganic and organic components in anhydrous DMF and DMF with a trace amount of water (the trace amount of water originates from MnCl 2 ·4H 2 O), respectively. Single-crystal X-ray diffraction data are collected for 1 in 300-100 K and 2 in 370-100 K, revealing that 1 and 2 crystallize in monoclinic space group P2 1 /c and triclinic space group P1, respectively. Crystal 1 contains [Pb 4 Cl 12 ] ∞ twin chains, rarely reported, constructed from edge-sharing PbCl 6 octahedra, and dications surround the [Pb 4 Cl 12 ] ∞ twin chains. Crystal 2 includes [Pb 3 Cl 10 ] ∞ single chains, comprised of distorted PbCl 6[a]

Copper and silver heterometallic iodoantimonates: structure, thermal stability, and optical properties

“…Halide complexes, known for a long time, play a crucial role in modern coordination chemistry and materials science due to their high structural diversity 1,2 and promising physical properties. [3][4][5][6][7] Particularly, the class of halide perovskite materials, initially based on methylammonium lead(II) iodide, 8 has become one of the hottest topics in modern research. Halide perovskite materials now reach an efficiency of 25%, 9 comparable to that of silicon-based solar cells, with much more cost-effective and easier preparation techniques.…”

Dual-Emitting Ratiometric Luminescent Thermometers Based on Lanthanide Metal–Organic Complexes with Brønsted Acidic Ionic Liquids

“…Luminescent metal–organic complexes (MOCs), a subfamily of MOCs materials, have attracted tremendous attention owing to their great application promise ranging from photocatalysis, , luminescent devices, − and biomedical science − to chemical sensing. − Either in science or engineering fields, particularly in some effervescent fields, accurate temperature is a crucial physical parameter. Thus, many efforts have been made on ratiometric luminescent temperature sensors due to their faster response, higher sensitivity, safer operation, and the possibility of remote or noninvasive monitoring. − …”

Combining Dual-Light Emissions to Achieve Efficient Broadband Yellowish-Green Luminescence in One-Dimensional Hybrid Lead Halides

“…In these light-emitting species, inorganic–organic hybrid metal halides have been considered some of the most attractive luminescent materials due to their various advantages, including a facile wet-chemical assembly process, tailorable compositions and structures, a wide color gamut covering the entire visible spectrum, a tunable emission wavelength, and high PLQEs. − Compared to the high-temperature solid-state preparation method of conventional oxide phosphors, the facile wet-chemistry assembly process and economical raw materials of hybrid metal halides endow advantages to easily realize the film deposition and controllable crystallization morphologies, further providing a convenient route for optical device applications. − Importantly, the hybrid metal halides accommodate wide chemical compositions and structural adjustabilities from the abundant template effects of diversified organic cations. − By systematically regulating the molecular configuration and charge distributions of the organic components, the anionic skeletons of hybrid metal halides can be tailored from a three-dimensional network to two-, one-, and zero- dimensional skeletons. − In particular, the 2D and 1D lead perovskites are able to display broadband light emissions, which provide the ability to fabricate single-component white-light-emitting diodes (WLEDs). , For example, (N-MEDA)­[PbBr 4 ] (2D), (EDBE)­[PbBr 4 ] (2D), (C 4 N 2 H 12 )­[PbBr 4 ] (2D), and (C 5 H 14 N 2 )­[PbCl 4 ]·H 2 O (1D) display white-light emissions with promising PLQEs and high color-rendering indexes (>80). , All these multiple advantages greatly inspire the huge interest in exploring new kinds of low-dimensional lead halide luminescent materials through a structural assembly strategy.…”