Abstract
Two ionic mononuclear silver(I) complexes (1 and 2) with formula of [Ag(N^P)(Xantphos)]SbF6, where N^P = 2–(benzo[d]thiazol)–2–yl) diphenylphosphine derivatives, Xantphos = 4,5-Bis(diphenylphosphino)-9,9-dimethylxanthene, have been synthesized and characterized. Single crystal analysis reveals that the geometries around Ag(I) centers adopt distorted tetrahedron (1) and trigonal planar (2). In powder at 298 K, these complexes exhibit bright emissions with high photo-luminescent quantum yields of 55.2 % (1) and 46.7 % (2) and lifetimes of 0.426 ms (1) and 1.87 ms (2), respectively. The results suggested that these complexes containing bulky benzothiazole phosphine can realize efficient long-lived phosphorescence.
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