jp054525v_si_002.pdf (119.44 kB)
Studies of Langmuir−Blodgett Films of an Ion Pair Metal Complex Containing Eu(III)-Ru(II) Dual Chromophores
journal contribution
posted on 2006-04-13, 00:00 authored by Li-Hua Gao, Ke-Zhi Wang, Li Cai, Hao-Xu Zhang, Lin-Pei Jin, Chun-Hui Huang, Hong-Jun GaoA surfactant ion-pair complex, [Ru(bpy)2L][Eu(NTA)4]2 (in which L = 1-docosyl-2-(2- pyridyl)benzimidazole,
bpy = 2,2‘-bipyridine, and NTA = 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedionato) has been synthesized.
The surface pressure−area isotherm measurements show that the complex forms a stable Langmuir film at
the air−water interface without adding any electrolytes into the subphase. The monolayers formed at the
surface pressures of 5 mN m-1 and 20 mN m-1, have been successfully transferred onto glass and quartz
substrates with the transfer ratios close to unity. The Langmuir−Blodgett films were studied by UV−visible,
infrared, and emission spectroscopies, atomic force microscopy, and cyclic voltammetry. The optical, redox,
and morphology properties of the LB films were found to be significantly affected by the target surface
pressures used for the film depositions.