An AIE-based ratiometric fluorescent probe for highly selective detection of HS in plant stress responses.

Hydrogen sulfide (HS) has emerged as a crucial signaling molecule in plant stress responses, playing a significant role in regulating various physiological and biochemical processes. In this study, we report an aggregation-induced emission (AIE)-based ratiometric fluorescent probe TPN-HS for the highly selective detection of HS in plant tissues. The probe exhibited excellent sensitivity and selectivity towards HS over other analytes, enabling real-time monitoring of HS dynamics in living cell.

Rational design of Near-Infrared fluorescent probe for monitoring HNO in plants.

Nitroxyl (HNO), a reactive nitrogen species (RNS), is essential for plant growth. However, the action of HNO in plants has been difficult to understand due to the lack of highly sensitive and real-time in-situ monitoring tools. Herein, we presented a near-infrared fluorescent probe, DCI-HNO, based on dicyanoisophorone fluorophore, for real-time mapping HNO in plants.

Rational design of a rapidly responsive and highly selective fluorescent probe for SO derivatives detection and imaging.

Sulfur dioxide (SO) is emerging as a double-edged molecule, while plays vital roles in food and biological system. However, the fast, highly sensitive, and versatile fluorescent probe still remains a tough challenge among current reports. Herein, we developed a novel aggregation-induced emission (AIE) fluorescent probe TPE-PN for specifically sensing SO derivatives with high sensitivity (150 nmol/L) and rapid response time (10 s) based on intramolecular charge transfer (ICT) mechanism.