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3-(2-Pyridyl)-2-pyrazoline derivatives: novel fluorescent probes for Zn ion |
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| Authors: | Pengfei Wang Nobuko Onozawa-Komatsuzaki Yuichiro Himeda Hideki Sugihara Hironori Arakawa Kazuyuki Kasuga |
| Affiliation: | aPhotoreaction Control Research Center, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan |
| Abstract: | Spectroscopic studies revealed that 3-(2-pyridyl)-2-pyrazoline derivatives have rather strong affinity toward divalent transition metal ions, but have almost no interaction with alkali and alkaline-earth metal ions. In the case of the 5-(4-cyanophenyl) derivative, enhancement of the fluorescence intensity was observed upon addition of the Zn2+ ion, while most of other transition metal ions caused complete quenching. |
| Keywords: | chelation fluorescence pyrazolines zinc |
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