What question did this study set out to answer?

To develop a robust sensor using tetraphenylethylene-equipped graphene quantum dots for hydrogen peroxide detection in plants.

Tetraphenylethylene‐Equipped Graphene Quantum Dots Heterostructure With Enhanced Cathodic Photoelectrochemical Signal for Hydrogen Peroxide Detection in Plants

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Novel sensors demonstrate enhanced detection of hydrogen peroxide in plants, improving agricultural management practices.

To develop a robust sensor using tetraphenylethylene-equipped graphene quantum dots for hydrogen peroxide detection in plants.
Developed a heterostructure using tetraphenylethylene-equipped graphene quantum dots.
Utilized photoelectrochemical sensing with p-type semiconductors to facilitate electron transfer.
Applied minimally invasive microneedle extraction for in vivo monitoring of hydrogen peroxide in plants.
Achieved a low detection limit of 70.2 nM for hydrogen peroxide.
Showed enhanced cathodic photocurrent signals through fast electron channels.
Demonstrated effective monitoring of hydrogen peroxide fluctuations in tomato leaves under biotic and abiotic stresses.

Mao et al. (2026) studied this question.

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