Spectroscopic properties of lanthanoid benzene carboxylates in the solid state: part 1

Hilder, Matthias, Junk, Peter, Kynast, Ulrich, and Lezhnina, Marina M. (2009) Spectroscopic properties of lanthanoid benzene carboxylates in the solid state: part 1. Journal of Photochemistry and Photobiology A: Chemistry, 202 (1). pp. 10-20.

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Abstract

Europium and terbium complexes of benzoic acid (HBA), 9-anthracene carboxylic acid (9-HACA), 1-naphthoic acid (1-HNA), 2-naphthoic acid (2-HNA), cinnamic acid (HCA), o-phenylbenzoic acid (o-HPhBA), p-phenylbenzoic acid (p-HPhBA), o-methylbenzoic acid (o-HMeBA), m-methylbenzoic acid (m-HMeBA), p-methylbenzoic acid (p-HMeBA), p-tert-butylbenzoic acid (p-tertHBuBA), phthalic acid (H2Phth), isophthalic acid (H2-IsoPhth) and terephthalic acid (H2-TerePhth) were synthesised by aqueous metathesis reactions. The compositions were determined by microanalysis, DTA, and EDTA volumetric methods. Structural conclusions were drawn from powder XRD patterns and IR spectra. The optoelectronic properties were determined in the solid state, including reflectance, excitation, emission, and excitation efficiency, complemented by considering triplet state energies, which were derived from phosphorescence spectra of the corresponding gadolinium complexes. Besides the emission efficiencies, the splitting pattern of the 5D(0) → 7F(J) transitions of Eu3+ were used to derive structural information and the intensities relative to the 5D(0) → 7F(J) were used to gain information about the mechanism, adding electronic allowed dipole character to the forbidden emissions.

Item ID: 29698
Item Type: Article (Research - C1)
ISSN: 1873-2666
Keywords: lanthanoids, carboxylates, benzoates, luminescence, solid state
Funders: Australian Research Council (ARC), IPRS Scholarship, Monash Graduate Scholarship
Date Deposited: 02 Oct 2013 10:34
FoR Codes: 03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030202 f-Block Chemistry @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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