“…Metal–organic frameworks (MOFs), also being defined as microporosity-containing coordination polymers, have aroused immense focal interests recently, which are built on the inherent strong coordination of the linkers to the metal centers, and this strong coordinative bond always contributes to form rigid, stable, crystalline functional materials amenable to applications development in many respects, such as gas storage or separation, molecular fluorescence sensor, magnetic properties, drug delivery, etc. − Among diverse applications, fluorescence sensors closely related to luminescent MOFs are of great concern on account of their higher selectivity, sensitivity, and operability. − …”