19 October 2011 The substituted [2.2] paracyclophanes as versatile platform for a design of new optical materials
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Abstract
The series of novel unsymmetrical β--diketones substituted by functional groups with different donor-acceptor properties, as well as of their lanthanide complexes have been synthesized for the first time. The optical properties of these [2.2]paracyclophane-derived ligands and the lanthanide complexes were studied by UV-visible and luminescence spectroscopy. The energy of absorption maximum of these β--diketones correlates with donor-acceptor properties of functional groups and a size of the conjugated system. All β--diketonates synthesized exhibit broad emission spectra with red shifted maxima in comparison with isolated [2.2]paracyclophane moiety. The designed blue-emitting unsymmetrical β-diketones act as very efficient sensitizers of the Eu3+ emission with excitation wavelength up to 450 nm. Nonlinear optical properties have been studies for some β--diketones as well. Their average NLO susceptibility was found comparable with that of such well known NLO crystal as PNP.
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Lada N. Puntus, Lada N. Puntus, Elena V. Sergeeva, Elena V. Sergeeva, Dmitrii Yu. Antonov, Dmitrii Yu. Antonov, Ivan V. Anan'ev, Ivan V. Anan'ev, Konstantin A. Lyssenko, Konstantin A. Lyssenko, Irina S. Pekareva, Irina S. Pekareva, François Kajzar, François Kajzar, Ileana Rau, Ileana Rau, } "The substituted [2.2] paracyclophanes as versatile platform for a design of new optical materials", Proc. SPIE 8189, Optics and Photonics for Counterterrorism and Crime Fighting VII; Optical Materials in Defence Systems Technology VIII; and Quantum-Physics-based Information Security, 81890Y (19 October 2011); doi: 10.1117/12.898286; https://doi.org/10.1117/12.898286
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