Journal
CHEMICAL COMMUNICATIONS
Volume 57, Issue 44, Pages 5382-5385Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cc01316e
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Complex salts of cationic Au(i) and anionic Cu(i) were synthesized using different ligands, resulting in crystals with distinct phosphorescence emission colors that can be interconverted by exposure to solvent vapor.
Complex salts composed of cationic Au(i) and anionic Cu(i) species were synthesized by utilizing bis(diphenylarsino)methane (dpam) and bis(diphenylphosphino)methane (dppm) ligands. The discrete tetranuclear complexes were obtained as crystals, and the four-metal chain, CuMIDLINE HORIZONTAL ELLIPSISAuMIDLINE HORIZONTAL ELLIPSISAuMIDLINE HORIZONTAL ELLIPSISCu, was linked through homo- and hetero-metallophilic interactions. Three crystal polymorphs were obtained for the dpam- and dppm-complexes, depending on the recrystallization solvent. All the crystals exhibited intense phosphorescence (quantum yields up to 0.97) at room temperature, and the emission color of each crystal was significantly different. The crystals could be interconverted by exposure to solvent vapor, and this was accompanied by a drastic change in the emission color.
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