A highly selective turn-on luminescent logic gates probe based on post-synthetic MOF for aspartic acid detection

We herein design an innovative strategy for the detection of aspartic acid (Asp) based on a post-modification metal-organic framework Cu/[email protected] (3), which is synthesized by successively encapsulating Tb3+ and Cu2+ ions into Zn-MOF (1). Subsequently, the luminescence-quenched composite 3 is developed as a fluorescence “turn-on” probe for Asp, demonstrating excellent selectivity and low detection limit (0.54 ppm). In addition, this On–Off–On pattern is further to construct an advanced analytical model based on IMPLICATION-type logic gate. More remarkable, the high selectivity and sensitivity for Asp are unparalleled among sensor type, with which lanthanide fluorescence is enhancing by MOFs.