Highly fluorescent bipyridazines for acid detector

Jaekwon Do; Yuna Kim; Jungmok Yoo; Eunkyoung Kim; Andre-Jean Attias

doi:10.1117/12.733349

24 September 2007 Highly fluorescent bipyridazines for acid detector

Jaekwon Do, Yuna Kim, Jungmok Yoo, Eunkyoung Kim, Andre-Jean Attias

Proceedings Volume 6659, Organic-based Chemical and Biological Sensors; 665905 (2007) https://doi.org/10.1117/12.733349
Event: Photonic Devices + Applications, 2007, San Diego, California, United States

Abstract

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.

Citation Download Citation

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); https://doi.org/10.1117/12.733349

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