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24 September 2007 Highly fluorescent bipyridazines for acid detector
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A bipyridazine fluorophore, DHP2, was explored as a pH sensor. A solution of bipyridazine showed fluorescence intensity decrease as acid was added to the solution. The fluorescence intensity of the solution containing DHP2 was highly sensitive to acidic solution in the range from 2 to 9.7, with a Stern-Volmer quenching constant of K'acid as 9.7. However, the fluorescence intensity of DHP2 dissolved solution was not significantly changed by the addition of base. DHP2 was successfully doped in a transparent polymer to afford a thin film sensor. The fluorescent polymer film sensor was able to detect pH in the range from 3 to 12.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jaekwon Do, Yuna Kim, Jungmok Yoo, Eunkyoung Kim, and Andre-Jean Attias "Highly fluorescent bipyridazines for acid detector", Proc. SPIE 6659, Organic-based Chemical and Biological Sensors, 665905 (24 September 2007);

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