Bioconjugation of MOF-5 for molecular sensing

Zn-BDC (BDC = 1,4-benzenedicarboxylate acid) or more commonly known as metal organic framework (MOF-5) was synthesized via chemical stirring method and bioconjugated with anti-bovine serum albumin (anti-BSA) through pendent group. The pendent group of organic linker on surface of MOF-5 has been activated via EDC (1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide) based simple organic reaction and then bioconjugation of anti-BSA was achieved. Bioconjugation of anti-BSA on to MOF-5 has been used to study the interaction with BSA based on their fluorescence properties. Fluorescent microscopy revealed successful interaction of anti-BSA with BSA onto MOF-5 surface. In addition, BSA conjugated MOF-5 showed no loss of enantioselectivity and structure stability. Photoluminescence quenching of the developed probe was demonstrated to observe the presence of BSA.