Carter, Korey P., Thomas, Kara E., Pope, Simon J. A. ![]() |
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Abstract
The syntheses and crystal structures of 16 new rare-earth (RE = La3+–Y3+)–3,5-dichlorobenzoic acid–terpyridine molecular materials characterized via single-crystal and powder X-ray diffraction are reported. These 16 complexes consist of four unique structure types ranging from molecular dimers (La3+ and Ce3+) to tetramers (Pr3+–Y3+) as one moves across the RE3+ series. This structural evolution is accompanied by subsequent changes in modes of supramolecular assembly (halogen bonding, halogen−π, halogen–halogen, and π–π interactions). Solid-state visible and near-infrared lifetime measurements were performed on complexes 6 (Sm3+), 7 (Eu3+), 9 (Tb3+), 10 (Dy3+), 11 (Ho3+), 12 (Er3+), and 14 (Yb3+), and characteristic emission was observed for all complexes except 11. Lifetime data for 11, 12, and 14 suggest sensitization by the terpy antenna does occur in near-infrared systems, although not as efficiently as in the visible region. Additionally, direct current magnetic susceptibility measurements were taken for complexes 10 (Dy3+) and 12 (Er3+) and showed dominant ferromagnetic behavior.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Chemistry |
Subjects: | Q Science > QD Chemistry |
Additional Information: | PDF uploaded in accordance with publisher's policies at http://www.sherpa.ac.uk/romeo/issn/0020-1669/ (30.6.16). |
Publisher: | American Chemical Society |
ISSN: | 0020-1669 |
Date of First Compliant Deposit: | 28 June 2016 |
Date of Acceptance: | 27 June 2016 |
Last Modified: | 06 Nov 2023 18:57 |
URI: | https://orca.cardiff.ac.uk/id/eprint/92169 |
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