Surface Plasmon-Driven Versatile Enhancement of Chemosensing

Area of Science:

• Materials Science
• Optical Physics
• Analytical Chemistry

Background:

• Current chemosensor development relies heavily on material science, involving time-intensive design and synthesis.
• Enhancing sensing material performance at a fundamental physical level through optical properties remains underexplored.
• Surface plasmon resonance (SPR) is a key optical phenomenon in devices with potential for sensor enhancement.

Purpose of the Study:

• To develop a facile and versatile approach for improving chemosensor performance by utilizing surface plasmon resonance.
• To investigate the dual effect of SPR on fluorescence-based chemosensing: signal amplification and reaction kinetics.
• To demonstrate a surface plasmon-driven fluorescent chemosensor for hydrogen peroxide (H2O2) gas detection.

Main Methods:

• Utilized surface plasmon resonance (SPR) to enhance a fluorescence-based chemosensor.
• Employed the 2,4,6-trisformyl phenol-diethylamine (TFP-I) fluorescent probe for H2O2 detection.
• Investigated the amplification of fluorescence signals and acceleration of chemical reaction kinetics induced by SPR.

Main Results:

• Achieved outstanding sensing performance for H2O2 gas molecules.
• Demonstrated a sensitivity of 0.0225 parts per trillion (ppt).
• Obtained an exceedingly low limit of detection for H2O2 gas.

Conclusions:

• Substantiated the applicability of SPR in fluorescent chemical materials for enhanced sensing performance.
• Pioneered the strategic use of optical effects to manipulate chemical material performance, particularly for sensing.
• Highlighted the potential of SPR-driven approaches for advancing chemosensor capabilities.