Nd-to-Yb energy transfer (ET) at the molecular level has been investigated in the novel heterobimetallic NdYb2Q9 (Q = 8-quinolinolate) complex where the Q ligand works as a high cross-sectional optical antenna. The remarkable ion size-driven templating effect of Nd3+ allows for good control of molecular speciation through a simple one-pot synthetic procedure. Short intermetallic distances and enhanced donor (Nd)/acceptor (Yb) spectral overlap in the molecular assembly strongly favor Nd-to-Yb energy transfer, which reaches nearly unitary efficiency, while detrimental processes such as concentration quenching and energy back transfer are ruled out. The devised approach allows us to obtain a controlled assembly of heterolanthanide compounds whose features hold potential for the development of highly performing Yb3+-based optical materials.
Controlling Nd-to-Yb energy transfer through a molecular approach / Artizzu, Flavia; Serpe, Angela; Marchio', Luciano; Saba, Michele; Mura, Andrea; Mercuri, Maria Laura; Bongiovanni, Giovanni; Deplano, Paola; Quochi, Francesco. - In: JOURNAL OF MATERIALS CHEMISTRY. C. - ISSN 2050-7534. - 3:43(2015), pp. 11524-11530. [10.1039/c5tc02985f]
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