Systematic Optimization of Fluorogenic ARGET ATRP toward Rapid and Oxygen-Tolerant Analyte Detection

Area of Science:

• Polymer Chemistry
• Analytical Chemistry
• Biotechnology

Background:

• Sensitive analyte detection relies on amplifying molecular interactions.
• Fluorogenic activators regenerated by electron transfer atom transfer radical polymerization (ARGET ATRP) provide real-time fluorescence.
• Initial ARGET ATRP platforms had limitations in speed and oxygen sensitivity.

Purpose of the Study:

• To systematically optimize fluorogenic ARGET ATRP for improved performance.
• To investigate the impact of reaction variables on fluorescence generation.
• To develop an oxygen-tolerant platform for bioanalyte detection.

Main Methods:

• Evaluated effects of surfactant, catalyst loading, halide salt, and solvent.
• Conducted systematic optimization studies of ARGET ATRP reaction variables.
• Assessed fluorescence generation and reaction rates under various conditions.

Main Results:

• Optimized reaction components significantly increased fluorescence rate and magnitude.
• The optimized platform demonstrated tolerance to ambient oxygen.
• Reliable detection of initiators and model analytes was achieved in open air.

Conclusions:

• Optimized fluorogenic ARGET ATRP overcomes previous limitations.
• The enhanced platform enables rapid, sensitive, and oxygen-tolerant detection.
• This advancement opens possibilities for real-time bioanalyte detection applications.