Drastic Enhancement of Photosensitized Energy Transfer Efficiency of a Eu(III) Complex Driven by Arsenic
Toshiki Fujii, Yuichi Kitagawa, Yasuchika Hasegawa, Hiroaki Imoto, Kensuke Naka
Abstract
In this study, we focused on arsenic as a new potential motif for the ligand design of high-efficiency, luminous lanthanide complexes. A Eu3+ complex bearing triphenylarsine oxide had a photosensitized energy-transfer efficiency 7.9 times higher than that of a Eu3+ complex bearing triphenylphosphine oxide. This is mainly due to the heavy-atom effect of arsenic, which was supported by evaluating the photoluminescence spectra of their corresponding Gd3+ complexes.
Topics & Concepts
ChemistryTriphenylarsineTriphenylphosphine oxidePhotochemistryArsenicLanthanidePhotoluminescenceEnergy transferOxideLuminescenceLigand (biochemistry)Inorganic chemistryTriphenylphosphineOrganic chemistryIonCatalysisOptoelectronicsPhysicsBiochemistryReceptorMolecular physicsLanthanide and Transition Metal ComplexesMagnetism in coordination complexesMetal complexes synthesis and properties