Selective blue emission from an HPBO–Li+ complex in alkaline media
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DOI: 10.1039/B103562M
关键词: Benzoxazole 、 Naked eye 、 Counterion 、 Inorganic chemistry 、 Titration 、 Qualitative inorganic analysis 、 Pyridine 、 Photochemistry 、 Triethylamine 、 Chemistry 、 Fluorescence
摘要: 2-(2-Hydroxyphenyl)benzoxazole (HPBO) exhibits enhanced fluorescence and specificity for Li+ compared to Na+ K+, in an alkaline medium. The selectivity was observed several organic solvents the presence of bases such as pyridine, triethylamine trimethylamine. HPBO–Li+ complex formation results intense blue emission readily by naked eye under UV light. Spectroscopic titrations suggest that structure is one which two HPBO anionic ligands coordinate Li+, with a second counterion.
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