MIL-61 and Eu3+@MIL-61 as Signal Transducers To Construct an Intelligent Boolean Logical Library Based on Visualized Luminescent Metal-Organic Frameworks.

Abstract

MIL-61 and its postsynthesis product (Eu3+@MIL-61) are employed as signal transducers to construct a series of basic logic gates (NOT, NAND, INHIBIT, and XNOR) on account of their simple synthetic process and fascinating luminescent properties. Also, a two-output combinational logic gate and a cascaded logic gate can be constructed on these two signal transducers by changing the inputs. In this logic gate library system, the fluorescence of MIL-61 (λ395nm) or Eu3+@MIL-61 (λ615nm) is used as outputs with a threshold of 0.5. The advantage of this boolean logical library is that the two signal transducers are readily available and cost effective. In addition, the luminescence change is visible to the naked eye under a UV lamp, which is more convenient in application. More importantly, it presents a new route for the design of a molecular logic gate library based on luminescent metal-organic frameworks. And for further application, we experimentally construct two logic devices (a 4-to-2 encoder and a parity checker) based on Eu3+@MIL-61 to perform nonarithmetic information.