Luminescence Enhancement after Adding Stoppers to Europium(III) Nanozeolite L

Li, Peng; Wang, Yige; Li, Huanrong; Calzaferri, Gion (2014). Luminescence Enhancement after Adding Stoppers to Europium(III) Nanozeolite L. Angewandte Chemie (International ed.), 53(11), pp. 2904-2909. Wiley-VCH 10.1002/anie.201310485

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Stopper molecules attached to nanozeolite L (NZL) boost the luminescence of confined Eu3+-β-diketonate complexes. The mechanism that is responsible was elucidated by comparing two diketonate ligands of different pKa and two aromatic imines, and by applying stationary and time resolved spectroscopy. The result is that the presence of the imidazolium based stopper is favorable to the sustainable formation of Eu3+-β-diketonate complexes with high coordination by decreasing the proton strength inside the channels of NZL. A consequence is that strongly luminescent transparent films can be prepared using aqueous suspension of the stopper modified composites.

Item Type:

Journal Article (Further Contribution)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Li, Huanrong and Calzaferri, Gion

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry
500 Science

ISSN:

1433-7851

Publisher:

Wiley-VCH

Language:

English

Submitter:

Beatrice Niederhauser

Date Deposited:

01 Sep 2014 11:37

Last Modified:

05 Dec 2014 13:56

Publisher DOI:

10.1002/anie.201310485

Uncontrolled Keywords:

luminescence, rare earth elements, supramolecular chemistry, thin films, zeolites

BORIS DOI:

10.7892/boris.49128

URI:

https://boris.unibe.ch/id/eprint/49128

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