The first europium(III) β-diketonate complex functionalized polyhedral oligomeric silsesquioxane.
The first europium(III) β-diketonate complex functionalized polyhedral oligomeric silsesquioxane (POSS) has been obtained by immobilization of such a complex at a silicon vertex of the POSS cage through the complexation of Eu(3+) ions with thenoyltrifluoroacetone-functionalized POSS. The new molecular hybrid material is liquid at room temperature, and shows bright-red emission when irradiated with UV light due to energy transfer from the thenoyltrifluoroacetone ligand to the coordinated Eu(3+) ions. Thermal analysis has revealed a significant improvement in the thermal stability of the material compared with tris(2-thenoyltrifluoroacetonate)europium(III) dihydrate, [Eu(TTA)3 ]⋅2 H2 O. In the context of recent advances in printable electronic technology, this novel luminescent organic liquid with the characteristic emission of Eu(3+) may potentially be useful in the development of next-generation organic devices such as flexible displays.
Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130 (P.R. China), Tel: (+86) 22-60203674, Fax: (+86) 22-60204294.
Xiaofan
X
Chen
Panning
P
Zhang
Tianren
T
Wang
Huanrong
H
Li
POSS; europium(III) β-diketonate complex; hybrid materials; lanthanides; luminescence; soft materials