Quantum dot-polymer nanocomposite sensor array for chemical vapor sensing

摘要

A method of detecting the presence of a chemical vapor of interest using a quantum dot-polymer nanocomposite sensor array is provided. The method includes forming a plurality of sensors respectively of different nanocomposite films and a plurality of QDs. The plurality of sensors are exposed to a target chemical vapor and impingement by an excitation light source. Fluorescence emission intensity of the sensors is measured for a preselected duration of time and then the sensors are placed into contact with a chemical vapor. The changes in fluorescence emission intensity for all sensors are detected over time and the combined changes in fluorescence are compared to establish a unique combined response to identify the target chemical vapor.