Schematic illustration of the designed experiment for fluorescent imaging of the pH gradients induced by oxygen reduction reaction electrocatalyst by a Ptnanoparticle array (IMAGE)

Beijing Zhongke Journal Publising Co. Ltd.

Schematic illustration of the designed experiment for fluorescent imaging of the pH gradients induced by oxygen reduction reaction electrocatalyst by a Ptnanoparticle array

Caption

Ultra-pH-sensitive (UPS) probe molecules used in this work hold a deprotonation-induced micellization equilibrium that is responsible for the fluorescent quenching, where the red dots are the fluorophores and black ones the quencher on the copolymeric chains, and its narrow response window of between 6.1 and 6.3 in standard phosphate-buffered salines. The y-axis refers to the normalized (to the maximum) differentiation of fluorescent (FL) intensity with respect to pH, directly showing the sharpness of the probe's response. Art by Wang’s group.

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Beijing Zhongke Journal Publising Co. Ltd.

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