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Issue 18, 2012
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Synthesis, structure, and luminescent properties of oligothiophene-containing metal–organic frameworks

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Abstract

Metal–organic frameworks (MOFs) based on Zn and functionalized bithiophene dicarboxylic acids are reported, [Zn2(L1)2(DMA)2·3 DMF]n (1), [Zn(L2)(DMA)2]n (2), [Zn(L3)(bpe)0.5]n (3), [Zn(L1)(bpe)·2 DMF]n (4), and [Zn3(L2)3(bpe)2·4 DMF · H2O]n(5) (H2L1 = 3,3′-diphenyl-2,2′-bithiophene-5,5′-dicarboxylic acid, H2L2 = 3,3′-dihexyl-2,2′-bithiophene-5,5′-dicarboxylic acid, H2L3 = 2,2′-bithiophene-5,5′-dicarboxylic acid, DMA = dimethylamine, DMF = N,N-dimethylformamide, bpe = trans-1,2-bis(4-pyridyl)ethylene). MOFs 1, 2, and 4 consist of 2-D 4-connected sheets while 3 and 5 are 3-D interpenetrated networks with pcu and (4,6)-connected seh topology, respectively. The emission spectra and lifetimes of 1–5 have been determined: 4 and 5 exhibit reduced emission relative to 1 and 2, respectively, attributed to energy transfer quenching by the bpe, whereas 3 does not exhibit a reduction in emission intensity. Solid state lifetime measurements of 1–5 show that the emission decays are similar to those of the constituent ligands.

Graphical abstract: Synthesis, structure, and luminescent properties of oligothiophene-containing metal–organic frameworks

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Supplementary files

Article information


Submitted
09 Apr 2012
Accepted
18 Jun 2012
First published
22 Jun 2012

CrystEngComm, 2012,14, 5801-5808
Article type
Paper

Synthesis, structure, and luminescent properties of oligothiophene-containing metal–organic frameworks

L. D. Earl, B. O. Patrick and M. O. Wolf, CrystEngComm, 2012, 14, 5801
DOI: 10.1039/C2CE25529D

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