<P>A phenoxazine-based fluorescence chemosensor <B>4PB</B> [(4-(<I>tert</I>-butyl)-<I>N</I>-(4-((4-((5-oxo-5<I>H</I>-benzo[<I>a</I>]phenoxazin-6-yl)amino)phenyl)sulfonyl)phenyl)benzamid...
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https://www.riss.kr/link?id=A107655524
2019
-
SCOPUS,SCIE
학술저널
10095-10101(7쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>A phenoxazine-based fluorescence chemosensor <B>4PB</B> [(4-(<I>tert</I>-butyl)-<I>N</I>-(4-((4-((5-oxo-5<I>H</I>-benzo[<I>a</I>]phenoxazin-6-yl)amino)phenyl)sulfonyl)phenyl)benzamid...
<P>A phenoxazine-based fluorescence chemosensor <B>4PB</B> [(4-(<I>tert</I>-butyl)-<I>N</I>-(4-((4-((5-oxo-5<I>H</I>-benzo[<I>a</I>]phenoxazin-6-yl)amino)phenyl)sulfonyl)phenyl)benzamide)] was designed and synthesized by a simple synthetic methods. The <B>4PB</B> fluorescence chemosensor selectively detects Ba<SUP>2+</SUP> in the existence of other alkaline metal ions. In addition, <B>4PB</B> showed high selectivity and sensitivity for Ba<SUP>2+</SUP> detection. The detection limit of <B>4PB</B> was 0.282 μM and the binding constant was 1.0 × 10<SUP>6</SUP> M<SUP>-1</SUP> in CH<SUB>3</SUB>CN/H<SUB>2</SUB>O (97.5:2.5 v/v, HEPES = 1.25 mM, pH 7.3) medium. This chemosensor functioned through the intramolecular charge transfer (ICT) mechanism, which was further confirmed by DFT studies. Live cell imaging in MCF-7 cells confirmed the cell permeability of <B>4PB</B> and its capability for specific detection of Ba<SUP>2+</SUP> in living cells.</P>
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