Issue 23, 2023

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

Abstract

Owing to the weakness of the interaction between chlorohydrocarbon and the host framework, the development of reversible and vapochromic coordination polymer (CP)-based luminescence sensors for the detection of CH2Cl2 with a fast response is still challenging. In this study, a flexible Cu(I)-CP, [Cu2I2(PPh3)2(PYZ)] (CIPP, PPh3 = triphenylphosphine, PYZ = pyrazine) is reported. The intra-cluster Cu⋯Cu distance in CIPP is quite sensitive to the external stimuli, resulting in the corresponding luminescence color and intensity change. Based on this feature, the fast (11 s), distinguishing (wavelength shift of 45 nm), and reversible luminescence response of CIPP for CH2Cl2 is realized. Crystallographic analysis suggests that the presence/removal of CH2Cl2 can affect the Cu⋯Cu distance, which is the origin of the responsive luminescence. In addition, the multiple weak interactions between CH2Cl2 and the framework afford the strong adsorption of CH2Cl2 into CIPP, which can be maintained for at least 5 minutes when exposed to air, thereby ensuring accuracy in the sensing process.

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

Supplementary files

Article information

Article type
Research Article
Submitted
28 avq 2023
Accepted
08 okt 2023
First published
10 okt 2023

Inorg. Chem. Front., 2023,10, 6909-6917

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

W. Zhang, W. Chen, C. Li, W. Sun, J. Ye, L. Chen, H. Wang and X. Chen, Inorg. Chem. Front., 2023, 10, 6909 DOI: 10.1039/D3QI01723K

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