Novel organosilicon monomer for preparing transparent matrices doped with lanthanide complexes |
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| Authors: | E Yu Ladilina T S Lyubova V V Semenov O V Kuznetsova A I Kirillov V I Faerman A Yu Dolgonosova M A Baten’kin M A Lopatin |
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| Institution: | 1.G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences,Nizhny Novgorod,Russian Federation |
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| Abstract: | Perfluoroadipic bis(trialkoxysilylpropyl)amide was synthesized as a mixture of five compounds with the general formula (EtO)
n
(MeO)3-n
Si(CH2)3NHC(O)(CF2)4C(O)NH(CH2)3-Si(OMe)
n
(OEt)3-n
(1, n = 1, 2). Hydrolysis of this product by a specified amount of water (1: 4) gave oligomers EtO(HO)(EtO)Si(CH2)3NH(O)C(CF2)4C(O)NH(CH2)3Si(OEt)2O]nH (
n
= 7–9). From oligomer solutions, transparent glassy thermally stable films were obtained. The film material was studied by
IR spectroscopy, atomic force microscopy, transmission electron microscopy, and powder X-ray diffraction. Compound 1 and oligomers
can efficiently solvate lanthanide diketonate complexes. They displace water from the metal coordination sphere, and this
water is then spent for hydrolysis of trialkoxysilyl groups. The luminescence intensity of matrix films based on the oligomers
depends on the concentration of lanthanide complexes and is very low at 7nexc = 330 nm, whereas the luminescence intensity of the Eu3+ cation is very high. |
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