Journal article

Authors list: Dannenbauer, N; Matthes, PR; Scheller, TP; Nitsch, J; Zottnick, SH; Gernert, MS; Steffen, A; Lambert, C; Müller-Buschbaum, K

Publication year: 2016

Pages: 7396-7406

Journal: Inorganic Chemistry

Volume number: 55

Issue number: 15

ISSN: 0020-1669

DOI Link: https://doi.org/10.1021/acs.inorgchem.6b00447

Publisher: American Chemical Society

Abstract: 
A series of 12 lanthanide coordination polymers was synthesized from anhydrous LnCl3 and 1,2-di(4-pyridyl)ethylene (dpe) under solvothermal conditions in either thiazole (thz) or pyridine (py). The reactions yielded ∞1[Ln2Cl6(dpe)2(thz)4]·dpe with Ln = Ce (1), Nd (2), ∞1[LnCl3 (dpe)(py)2]·(dpe/py) with Ln = Gd (3), Er (4), and ∞1[LnCl3(dpe) (thz)2](dpe/thz) with Ln = Sm (5), Gd (6), Tb (7), Dy (8), Er (9), Yb (10), as well as ∞1[HoCl3(dpe)(thz)2]·thz (11) and ∞2[La2Cl6(dpe)3(py)2]·dpe (12). One-dimensional coordination polymers (CPs) and a two-dimensional network of five different constitutions are formed by connection of LnCl3 units via dpe molecules. As free ligand, dpe shows an excimer effect that is reduced in the coordination polymers. In addition, dipyridylethylene proves to be a suitable sensitizer for the photoluminescence of lanthanides in the near-infrared region (NIR) only. Thereby, dpe differs from the related ligand 1,2-di(4-pyridyl)ethane. For the compounds presented, four different luminescence effects were detected: luminescence based on fluorescence of the linker dpe is observed in the visible region, whereas ligand-sensitized 4f–4f NIR emission is dominating for trivalent Nd, Er, and Yb. The Er-containing CPs show an inner-filter effect of Er3+, which is based on reabsorption of emission of dpe triggering the erbium NIR emission.

Harvard Citation style: Dannenbauer, N., Matthes, P., Scheller, T., Nitsch, J., Zottnick, S., Gernert, M., et al. (2016) Near-Infrared Luminescence and Inner Filter Effects of Lanthanide Coordination Polymers with 1,2-Di(4-pyridyl)ethylene, Inorganic Chemistry, 55(15), pp. 7396-7406. https://doi.org/10.1021/acs.inorgchem.6b00447

APA Citation style: Dannenbauer, N., Matthes, P., Scheller, T., Nitsch, J., Zottnick, S., Gernert, M., Steffen, A., Lambert, C., & Müller-Buschbaum, K. (2016). Near-Infrared Luminescence and Inner Filter Effects of Lanthanide Coordination Polymers with 1,2-Di(4-pyridyl)ethylene. Inorganic Chemistry. 55(15), 7396-7406. https://doi.org/10.1021/acs.inorgchem.6b00447