New "Off-On" Responsible Fluoroionophores for Alkaline Earth Metal Ions Based on Benzo-15-crown-5 Bearing 9-Phenanthreneacetamide
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概要
- 論文の詳細を見る
The photochemical behaviors of a series of 9-phenanthreneacetamide (PA) derivatives were investigated using UV, fluorescence, and 1H-NMR spectroscopy in acetonitrile solutions. To apply the electron transfer (ET) action of PA as a detecting moiety of chemosensors, 4'-(9-phenanthereneacetamido)-benzo-15-crown-5 (1) and 3'-methyl-4'-(9-phenanthreneacetamido)-benzo-15-crown-5 (2) were synthesized. After metal ion complex formation, the fluorescence intensity increased with increased concentration of the guest alkaline earth metal ions. The photochemical responses of the fluorescence intensity, as defined by the fluorescence intensity ratio (I_[max]/I_0) between free and complex of 1 for Ca2+, was determined to be 4.76. However, the addition of guest ions in a solution of 2 greatly enhanced the fluorescence intensity of 2. The I_[max]/I_0 of 2 was 16.6 for Ca2+. The efficiency of ET of PA can be tuned by adding an electron-donating group onto a suitable position; fluorescent 2 was able to read out metal ions as an "Off-On" fluorescence signal.
- Japan Society for Analytical Chemistryの論文
- 2009-05-10
著者
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Nakamura Hiroshi
Section of Orthopedic Spinal Surgery, Department of Frontier Surgical Therapeutics, Division of Adva
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Morozumi Tatsuya
Research Faculty Of Environmental Earth Science Hokkaido University
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Morozumi Tatsuya
Section Of Materials Science Faculty Of Environmental Earth Science Hokkaido University
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OKA Yoshikazu
Division of Environmental Materials Science, Graduate School of Environmental Science, Hokkaido Univ
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HAMA Hiroya
Division of Environmental Materials Science, Graduate School of Environmental Science, Hokkaido Univ
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Hama Hiroya
Division Of Environmental Materials Science Graduate School Of Environmental Science Hokkaido Univer
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Nakamura Hiroshi
Department Of Analytical Chemistry Faculty Of Pharmaceutical Sciences Tokyo University Of Science
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Nakamura Hiroshi
Research Faculty Of Environmental Earth Science Hokkaido University
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Nakamura Hiroshi
Section Of Materials Science Faculty Of Environmental Earth Science Hokkaido University
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