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scen gro din nd cally in g the ferent and ion TNT, serves the purpose of explosive detection [11]. The Swager group reported a series of fluorescent, pentiptycene-containing conjugated polymers as chemosensors for detection of sensing performance also depends on other materials ’ properties in addition to the intrinsic properties of a given polymers (e.g., free volume, fluorescence quantumyield and chainpolarity). Adsorption of the gaseous analyte on the surface of a sensory polymer film and diffusion through the film are closely related to some sensing parameters such as response time, sensitivity and selectivity. A high diffusion rate for a specific analyte could lead to fast, large response (e.g., fluorescence quenching) in detection. However, low adsorp-tion of the analyte could result in a slow response time or lo