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Surface Plasmon-Driven Versatile Enhancement of Chemosensing.

Chunhui Li1,2, Dinghai Xu1, Huan Liu1

  • 1State Key Lab of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China.

ACS Sensors
|December 9, 2024
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Summary

This study introduces a novel surface plasmon resonance approach to enhance fluorescent chemosensors. This method boosts signal collection and reaction speed, significantly improving hydrogen peroxide gas detection.

Keywords:
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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.