Cu(i)-MOF: naked-eye colorimetric sensor for humidity and formaldehyde in single-crystal-to-single-crystal fashion

Abstract

A porous Cu(I)-MOF was constructed from CuI and 1-benzimidazolyl-3,5-bis(4-pyridyl)benzene. This Cu(I)-MOF can be a highly sensitive naked-eye colorimetric sensor to successively detect water and formaldehyde species in a single-crystal-to-single-crystal fashion. Solid-state guest-responsive luminescence is also used to monitor the sensing process.

Cu(I) hybrid inorganic–organic materials with intriguing stimuli responsive and optoelectronic properties

“…A porous Cu(I)-MOF as colorimetric sensor to detect water and formaldehyde species in a singlecrystal-to-single-crystal fashion was reported by Dong et al [72]. Cu 2 (L) 2 I 2 ·MeCN·MeOH·1.5H 2 O (L =1-benzimidazolyl-3,5-bis(4-pyridyl)benzene), 76, was prepared by reaction of L with CuI in a MeCN/CH 2 Cl 2 /MeOH mixed-solvent system, as bright yellow crystals.…”

Fluorescent “Turn‐on” Sensing Based on Metal–Organic Frameworks (MOFs)

“…The increase in the fluorescence was attributed to the structural rigidity brought upon by the incorporation of the HCHO molecules inducing a suitable host guest interaction with the MOF (Figure ). This result was further corroborated by single‐crystal to single‐crystal (SC‐SC) transformation and was even recognized by naked eye detection …”

Three d10 metal coordination compounds based on pyrazole-3-carboxylic acid showing mixed-ligand characteristic: Syntheses, crystal structures, and photoluminescent properties

“…On the other hand, among the various applications of MOCCs as stated above, the photoluminescence of MOCCs and its related applications [35][36][37][38][39] e.g., the white-light emitter and fluorescence sensor attract more attention from scientists [40][41][42][43][44][45]. Take d 10 Zn(II) and Cd(II) ions for example, they can form coordination geometries varying from tetrahedron, trigonal-bipyramid and square-pyramid to octahedron, hence are suitable for constructing interesting photoluminescent MOCCs with diverse structures [35,36].…”