Detection of dopamine by a minimized electrochemical sensor using a graphene oxide molecularly imprinted polymer modified micropipette tip shaped graphite electrode

A simple and efficient electrochemical sensor based on a homemade reshaped micropipette tip carbon paste electrode is reported. Molecularly imprinted polymer membranes of graphene oxide polypyrrole are synthesized modified the surface electrode. The merit method evaluated under optimized conditions via differential pulse voltammetrics. prepared exhibits remarkable sensitivity toward dopamine with linear range 6.4 × 10 −8 –2 −4 M, limit detection as low 1 M. proposed applied for determination in urine samples by standard addition route. −7 –1 M obtained from these samples. relative recoveries 95.2%–104%. has acceptable performance real excellent selectivity.