|Title||Enhanced Luminescence from Emissive Defects in Aggregated Conjugated Polymers.|
|Publication Type||Journal Article|
|Year of Publication||2007|
|Authors||Satrijo, A, Kooi, SE, Swager, TM|
|Keywords||emissive defect conjugated polymer enhanced luminescence color sensor, polyphenylene polyacetylene decompn green fluorescence anthryl defect color change|
Degradation experiments and model studies suggested that the longer lived green fluorescence from an aggregated poly(p-phenylene ethynylene) (PPE) was due to the presence of highly emissive, low-energy, anthryl defect sites rather than the emissive conjugated polymer excimers proposed in a previous report. After elucidating the origin of the green fluorescence, additional anthryl units were purposely incorporated into the polymer to enhance the blue-to-green fluorescence color change that accompanied polymer aggregation. The improved color contrast from this anthryl-doped conjugated polymer led to the development of crude solution-state and solid-state sensors, which, upon exposure to water, exhibited a visually noticeable blue-to-green fluorescence color change.