期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 70, 期 4, 页码 1463-1466出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo048228i
关键词
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A new fluorogenic cone calix [4]triazacrown-5 (1) bearing two pyrene amide groups and its structural analogue 2 have been prepared. Excited at 343 nm, 1 and 2 reveal excimer emissions at 448 and 472 nm, respectively. When heavy metal ions such as Pb2+ and Co2+ are bound to 1, the fluorescence intensities of both monomer and excimer are quenched whereas H bonding-assisted F- binding to 1 gives rise to a quenched monomer emission with little excimer emission change.
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