Abstract
Abstract To investigate local electron transfer in metal-organic frameworks (MOFs), we synthesized a new MOF structure composed of zinc cations and 1,4-naphthalenedicarboxylate (14ndc) linker anions. The crystal structure was determined by single crystal X-ray diffractometry and the optical properties were investigated by measurements of luminescence and excitation spectra. [Zn4(ndc)3(OH)2](C2H5OH)(1.4H2O) crystallizes in space group $P\bar{1}$ and contains ZnO4 and ZnO6 coordination spheres linked by the naphthalenedicarboxylate (ndc, C12H6O42−) units. Under UV irradiation, the MOF shows violet luminescence, which is probably due to energy transfer involving two different systems in the structure. The MOF shows good stability in a water/ethanol mixed solvent (approximately 3:5 ratio by volume that is consistent with the solvent used for sample preparation).
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