Quantum mechanics

Materials science

Graphene

Protonation

Nanocomposite

Chitosan

Deprotonation

Combinatorial chemistry

Physics

Nanotechnology

Organic chemistry

Enzyme

Fluorescence

Urease

Chemistry

Quantum dot

New Journal of Chemistry

We used the intriguing pH-responsive protonation/deprotonation transitions of chitosan and the fluorescence properties of reduced graphene quantum dots to design a novel pH probe and realize the real-time monitoring of urease activity.

An rGQD/chitosan nanocomposite-based pH-sensitive probe: application to sensing in urease activity assays