Three-dimensional molybdenum oxide coordination polymer for µ–solid phase extraction

Separation and extraction methods are usually required prior to the instrumental analysis because of low samples concentrations and their complexity [1]. Metal organic frameworks (MOFs) or porous coordination polymers are based on the coordination of metal ions or clusters with bi- or multidentate organic linkers. MOFs, due to their excellent properties such as high surface area, porosity, high chemical and thermal stability and uniform structure cavities developed in diverse research areas including catalysis, sensing, biomedical application, gas storage and separation [2]. Recently, MOFs with unique properties have attracted great interests to be used as extractive phase [3]. In the current work, a three-dimensional molybdenum oxide coordination polymer of 〖{(M_2 O_6)(4,4^ʹ-bpy)}〗_n was synthesized [4]. The applicability of the fabricated MOF as sorbent for different anlaytes such as drugs and herbicides was examined. The nanosized coordination polymer also applied as a sorbent for microextraction of naproxen, diclofenac and mefenamic acid as model analytes in conjunction with reversed phase liquid chromatography with UV detection. Our early investigation reveals that the employment of 〖{(M_2 O_6)(4,4^ʹ-bpy)}〗_n in the developed method can achieve enrichment factors around 100 with reproducible behaviour. In overal, the synthesized MOF appears to be a good candidate as extractive phase in separation field.