| 초록 |
The aggregation-induced fluorescence change in benzothiadiazole (BT)-containing polymers are used to detect oppositely charged analytes. In a dilute, well-dissolved ionic conjugated polymer solution, exciton transport can be approximated by a one-dimensional random walk within an isolated polymer chain. However, interchain exciton migration become possible if the polymers aggregate within close proximity to each other. Among the various exciton migration-controlled fluorescence color tuning systems explored thus far, self-assembled nanostructure scaffolds that incorporate with photochromic materials in polymer matrix was expected to demonstrate the possibility of color tunings. The systems consisted of a photochromic compound in combination with conjugated polymer containing thieno pyrazine unit that exhibited intense fluorescence in the solid state. The emission spectrum was tuned by introducing exciton migration and photochromic switching capabilities into the system. |
