Fluorescent Conjugated Polymers for Detection of Explosives

Tuesday, October 8, 2019

Fluorescent Conjugated Polymers for Detection of Explosives

Department of Chemistry

College of Arts & Sciences

Where: HL 1144 - 4:00 pm
When: Tuesday, October 8th, 2019

Fast and sensitive detection of explosives is critical to ensuring global security. Fluorescent conjugated polymers (CPs) have received tremendous attention as a sensory material for super-sensitive or ultra-sensitive explosives detection, thanks to their ability to amplify the fluorescence quenching through “molecular wire” effect. Compared to a single molecule system, binding one receptor site of CPs results in an efficient quenching of all emitting units, which is referred to as super-quenching. In recent years, tremendous efforts have been dedicated to fabrication and modification of different types of CPs for detection of explosives in vapor and solution phases. This seminar will start with introduction of sensing mechanisms of fluorescent CPs, and then cover the strategies to enhance sensing performances of CPs through enhancing electron transfer driving force, strengthening CP-explosive interaction, facilitating analyte diffusion and increasing CP solubility.

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