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Absorption- and Excitation-Modulated Luminescence of Pr3+, Nd3+, and Lu3+ Compounds with Dianions of Tetrafluoroterephthalic and Camphoric Acids
Journal article   Open access   Peer reviewed

Absorption- and Excitation-Modulated Luminescence of Pr3+, Nd3+, and Lu3+ Compounds with Dianions of Tetrafluoroterephthalic and Camphoric Acids

Elena A. Mikhalyova, Olena V. Khomenko, Konstantin S. Gavrilenko, Vladimir P. Dotsenko, Anthony W. Addison and Vitaly V. Pavlishchuk
ACS omega, v 4(2), pp 2669-2675
01 Feb 2019
PMID: 31459502
url
https://doi.org/10.1021/acsomega.8b02388View
Published, Version of Record (VoR)Open Access (Publisher-Specific) Open

Abstract

Chemistry Chemistry, Multidisciplinary Physical Sciences Science & Technology
The luminescence of coordination polymers of Pr3+, Nd3+, and Lu3+ with tetrafluoroterephthalate and camphorate, [Ln(2)(Fbdc)(3)(DMF)(2)(H2O)](2) (Ln = Pr, Nd, Lu) and [Ln(2)(Camph)(2)(NO3)(2)(MeOH)](4) (Ln = Pr, Nd, Lu), was studied. Ligand-centered and/or metal-centered emissions appear, which depend on the excitation wavelength, ultimately allowing the emitted light color to be adjusted. Low-efficiency ligand-to-metal energy transfer leads to a difference between the excitation spectra of the tetrafluoroterephthalate-and camphorate-Pr3+ compounds, arising from a primary filtering effect on the ligand-centered excitation, by Pr3+ absorption. A secondary inner filter effect significantly changes the shape of the luminescence band, allowing a wide variation in the emission color, producing, for instance, a purple color, which is not the normal spectral emission. The low-efficiency energy transfer renders tetrafluoroterephthalate and camphorate ineffective as traditional "antenna" ligands for Pr3+ and Nd3+.

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Chemistry, Multidisciplinary
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