Chromogenic and Fluorescent Sensors

Kimura, K. Matsuba, T. Tsujimura, Y. Yokoyama, M. Anal. Chem. 1992, 64, 2508 Tsujimura, Y. Yokoyama, M. Kimura, K. Electroanalysis 1993, 5, 893 Kimura, K. Tsujimura, Y. Yokoyama, M. Yamada-oka, S. Pure Appl. Chem. 1995,67,1085 Tsujimura, Y. Yokayama, M. Kimura, K. Anal. Chem. 1995,67, 2401. 

Ion sensitive detectors taking advantage of the great sensitivity of fluorescence have been made by affixing moieties such as anthracene, pyrene, and bithiazolyl ° to the lower rim of calix[4]arenes. In the pyrene compound a p-nitrobenzyl group is also affixed to the lower rim to give 299, providing a system in which the pyrene fluorescence is quenched in the absence of a metal ion 

Yoshida, I. Yamamoto, N. Sagara, F. Ueno, K. Ishii, D. Shinkai, S. Chem. Lett. 1991,2105. Shimizu, H. Iwamoto, K. Fujimoto, K. Shinkai, S. Chem. Lett. 1991,2147. 

Perez-Jimenez, C. Harris, S. J. Diamond, D. J. Chem. Soc., Chem. Commun. 1993, 480 Perez-Jimenez, C. Harris, S. J. Diamond, D. J. Mater. Chem. 1994,4,145. 

Pellet-Rostaing, S. Regnouf-de-Vains, J.-B. Lamartine, R. Tetrahedron Lett. 1996, 37, 5889. 

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The fluoride-selective chromogenic and fluorescent sensor 14 containing naphthalene ureas was synthesized by Lee and coworkers [22]. From UV-visible studies, the sensor 14 showed a characteristic band at 325 nm. Upon addition of F", a new peak at 379 nm occurred in MeCN DMSO (9 1 v/v). Furthermore, Aem of 14 at 379 nm was shifted to 445 nm upon addition of F" (Ka= 14,200 M"1). 

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