Pre-concentration and energy transfer enable the efficient luminescence sensing of transition metal ions by metal–organic frameworks

Abstract

The 2,2'-bipyridyl moieties lining the channels of two designer metal-organic frameworks (MOFs), UiO-bpydc and Eu-bpydc (bpydc is 2,2'-bipyridine 5,5'-dicarboxylic acid), recognize and pre-concentrate metal ion analytes and, in the case of Eu-bpydc, transfer energy to the Eu(3+) centers, to provide highly sensitive luminescence sensors for transition metal ions.