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Exposure of hydrazine vapor to conjugated-polymer films reduces the small number of oxidized trap sites that quench excitons. This scheme is effective for trace hydrazine detection with a detection limit of less than 1 ppm. The introduction of an oxidizing dopant quenches the polymer emission and permits detection of hydrazine with larger on/off ratios (see figure).
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Thomas et al. (2006) studied this question.
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