Multiple Flexibilities Trigger Luminescent Piezochromism of Closely Packed Cu(I) Coordination Polymers

Abstract

Figure 8. Photographs of CPs (letter W: CuIP-1; left arch: CuIP-3; right arch: CuIP-2; letter Y: CuClP-2; letter U: CuBrP-2): a) before, b) after being ground, and c) then being exposed to acetonitrile vapor, excited by 365 nm UV light.

1D Coordination Polymers Constructed from Pyridine-2,6-Dicarboxamide Ligands Showing Selective and Recyclable Adsorption toward Methanol Vapor

“…Coordination polymers (CPs) with one-dimensional (1D) chains to three-dimensional (3D) frameworks have attracted a significant amount of research attention due to their intriguing structures. − Over the last few decades, research on CPs has expanded from simple synthesis to a wide range of applications in the fields of gas absorption and storage, − catalysis, − luminescent materials, − magnetic materials, , drug delivery, − etc. Despite the tremendous amount of progress achieved, the accurate prediction and controlled synthesis of CPs are still a major challenge.…”

Luminescence detection of CH2Cl2 by varying Cu⋯Cu interactions in a flexible porous coordination polymer

“…35,36 Based on this principle, we recently reported a series of Cu(I)-CPs with attractive optical properties, i.e., long afterglow and multi-stimuli-responsive, properties, including thermochromism, mechanochromism, and solvatochromism/ vapochromism. [37][38][39][40] Herein, we report a Cu(I)-CP, [Cu 2 I 2 (PPh 3 ) 2 (PYZ)] (CIPP, PPh 3 = triphenylphosphine, PYZ = pyrazine), which has a flexible one-dimensional (1D) chain structure. CIPP displays different blue shifts in the luminescence after the adsorption of CH 2 Cl 2 , CHCl 3 , and CH 3 CN vapors.…”

“…, long afterglow and multi-stimuli-responsive, properties, including thermochromism, mechanochromism, and solvatochromism/vapochromism. 37–40…”

Assembly of One-, Two-, and Three-Dimensional Cu(I)-Based Coordination Frameworks for Tunable White Light Emission and Effective Fluorescence Sensing

“…Luminescent coordination polymers (CPs) have received huge attention by virtue of their diverse topologies and broad applications in optics, display, bioimaging, sensing, and detection. − Of particular interest is the family of d 8 /d 10 transition-metal compounds, which is regarded as an emerging class of excellent luminescent solids benefiting from the presence of noncovalent metal···metal interactions in such complexes. − In particular, the copper­(I) halide-based coordination compounds, owing to not only the diverse coordination styles of Cu + (linear, trigonal, and tetrahedral geometry) and halide anions (from μ 2 - to μ 8 -linking) but also their unique photophysical or photochemical properties, have attracted huge interest. − Consequently, great efforts are being made in the pursuit of Cu-X-based (X = I, Br, Cl) networks with diverse structural motifs varying from discrete CuX or CuX 2 , Cu 2 X 2 dimers, Cu 3 X 3 , Cu 4 X 4 , or Cu 6 X 6 clusters, to zigzag [CuX] n or double-stranded [Cu 2 X 2 ] n chains and even to 2D Cu-X-based layers or 3D intricate frameworks. − Thanks to these various building blocks in the self-assembly process, numerous copper­(I) halide-based coordination frameworks have been fabricated in recent years with the assistance of diverse bridging ligands, which have a large possibility to exhibit vivid luminescence rooted in cluster-centered interactions or intracluster metal-halide charge transfer. , For example, Zang and co-workers reported a copper iodide cluster-based metal–organic framework (MOF) scintillator, which presents a high X-ray excited luminescence efficiency and can be used for X-ray flexible imaging …”