期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 204, 期 -, 页码 321-328出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2013.05.034
关键词
Polymorph; Coordination polymer; 2,5-Furandicarboxylic acid; Oxalic acid; In situ ligand generation; Photoluminescence
资金
- Fundacao para a Ciencia e a Tecnologia (FCT)
- FEDER
- QREN
- COMPETE [PEst-C/CTM/LA0011/2011]
- FCT [PTDC/CTM-NAN/119994/2010]
- [SFRH/BPD/74582/2010]
- Fundação para a Ciência e a Tecnologia [PTDC/CTM-NAN/119994/2010, SFRH/BPD/74582/2010] Funding Source: FCT
A novel metal organic framework (MOF) formulated as [Eu(H2O)(2)(fdc)(ox)(0.5)center dot(H2O)] n (1, fdc(2-)=2,5-furandicarboxylate, ox(2-)= oxalate), was hydrothermally synthesized via in situ ox(2-) generation from the partial decomposition of the fdc(2-) ligand. This material crystallizes in the monoclinic space group C2/c, unit cell parameters of 1: a=16.7570(10), b=10.5708(7), c=13.5348(14) angstrom, beta=116.917(2)degrees (Z=8), and exhibits a three-dimensional (3D)-porous framework, with guest water molecules residing in the channel linking all other ligands (H2O, ox(2-)and fdc(2-)) via hydrogen bonding interattions. Compound 2 is a polymorph of 1 crystallizing in monoclinic P21/c space group. The photoluminescence properties of 1 and 2 were studied at room temperature. The spectra show the typical Eu3+ red emission and the differences observed reflects the slightly different structures of these polymorphs. (C) 2013 Elsevier Inc. All rights reserved.
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