Electrochemical polymerization of Methylene blue on a electrode and Its utilization for improved Sensor Performances

In this review the use of methylene blue for modified electrode and its properties is studied. Methylene blue (MB) is a well-known redox indicator in analytical chemistry, because of itselectron mediating characteristic between enzymes and substrates. Methylene blue (MB) exhibits a fast and reversible redox couple according to reaction. Some of the uses of methylene blue are proposed as a sulfur sensor, as a photosensitizer for the production of singlet oxygen that damagein biological systems (eg DNA), and when polymerized on noble metals, as a conductive polymer with bioelectrochemical activity [1-2]. The presence of PMB in the composite film enhances the functional properties and overall increase in the sensitivity of the composite film modified electrodes. Methylene blue is anelectroactive conjugated cationic dye, which can be polymerized on the electrode surface by electrochemical method. Electrochemical polymerization can make the modified material uniformly and stably fixed on the electrode surface, and three-dimensional conductive interface can be easily formed. It is an ideal method for modified electrodes.

کلیدواژه ها:

polymer ، poly (methylene blue) ، bioelectrochemica ، modified electrode biosensor