Issue 12, 2023

A PN(Pz)P ligand protected Au2Cu2 complex for photoluminescent ultra-low humidity detection with reversible single-crystal-to-single-crystal transformations

Abstract

Reliable and sensitive detection of sub-ppm level, ultra-low humidity is critical for a number of important technologies. We herein report the reaction of a P/N hybrid ligand 3-dppmapz-1-ol with Au(I) and Cu(I) salts resulting in a heteronuclear Au2Cu2 cluster complex [Au2Cu2(3-dppmapz)2](PF6)2·4MeOH (1·4MeOH) that undergoes reversible single-crystal-to-single-crystal (SCSC) transformations into analogues 1 and 1·2H2O. The photoluminescent emission of 1·2H2O at 625 nm shifted to 617 nm within 24 h and 622 nm after 65 h in P2O5 dried air, and returned to green in MeOH/H2O or MeOH/EtOH vapour. Crystals of 1 could rapidly detect ultralow humidity of 0.21 ppm (w/w).

Graphical abstract: A PN(Pz)P ligand protected Au2Cu2 complex for photoluminescent ultra-low humidity detection with reversible single-crystal-to-single-crystal transformations

Supplementary files

Article information

Article type
Research Article
Submitted
24 3 2023
Accepted
16 5 2023
First published
17 5 2023

Inorg. Chem. Front., 2023,10, 3706-3713

A PN(Pz)P ligand protected Au2Cu2 complex for photoluminescent ultra-low humidity detection with reversible single-crystal-to-single-crystal transformations

S. Hu, S. Yan, Y. Hu, D. J. Young, H. Li, C. Lu, J. He and Z. Ren, Inorg. Chem. Front., 2023, 10, 3706 DOI: 10.1039/D3QI00549F

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