In:
Inorganic Chemistry Frontiers, Royal Society of Chemistry (RSC)
Abstract:
Due to the weakness of interaction between chlorohydrocarbon and host framework, the development of reversible and vapochromic coordination polymer (CP)-based luminescence sensors to CH2Cl2 with fast response is still challenging. In this work, 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 for 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 framework afford the strong adsorption of CH2Cl2 into CIPP, which can be kept for at least 5 minutes when exposed in air, hence ensuring the accuracy in the sensing process.
Type of Medium:
Online Resource
ISSN:
2052-1553
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
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