Two-dimensional conductive phthalocyanine-based metal-organic frameworks for electrochemical nitrite sensing

2D nickel phthalocyanine based MOFs (NiPc-MOFs) with excellent conductivity were synthesized through a solvothermal approach. Benefiting from excellent conductivity and a large surface area, 2D NiPc-MOF nanosheets present excellent electrocatalytic activity for nitrite sensing, with an ultra-wide linear concentration from 0.01 mM to 11 500 mM and a low detection limit of 2.3 mu M, better than most reported electrochemical nitrite sensors. Significantly, this work reports the synthesis of 2D conductive NiPc-MOFs and develops them as electrochemical biosensors for non-enzymatic nitrite determination for the first time.

Automated summary

2D nickel phthalocyanine based MOFs (NiPc-MOFs) with excellent conductivity were synthesized through a solvothermal approach. These nanosheets exhibit excellent electrocatalytic activity for nitrite sensing, presenting an ultra-wide linear concentration range and a low detection limit, surpassing most reported electrochemical nitrite sensors. This work demonstrates the synthesis and application of 2D conductive NiPc-MOFs as electrochemical biosensors for non-enzymatic nitrite determination for the first time.