Described herein is the synthesis and photophysics of two tetranuclear copper complexes, {[3,5-(Pri)2,4-(Br)Pz]Cu}4 and {[3-(CF3),5-(But)Pz]Cu}4 tailor-designed by manipulating the pyrazolyl ring substituents. Unlike their trinuclear analogues, the luminescence of the tetranuclear species is molecular (not supramolecular) in nature with extremely high solid-state quantum yields of ∼80% at room temperature.
H. V. R. Dias, H. V. K. Diyabalanage, M. M. Ghimire, J. M. Hudson, D. Parasar, C. S. Palehepitiya Gamage, S. Li and M. A. Omary, Dalton Trans., 2019, 48, 14979 DOI: 10.1039/C9DT03402A
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