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A novel turn-on fluorescent probe for the multi-channel detection of Zn2+ and Bi3+ with different action mechanisms
Analyst ( IF 3.6 ) Pub Date : 2017-12-08 00:00:00 , DOI: 10.1039/c7an01591g
Shanyi Guang 1, 2, 3, 4 , Gang Wei 1, 2, 3, 4, 5 , Zhengquan Yan 1, 2, 3, 4, 6 , Yuehua Zhang 2, 3, 4, 5, 7 , Gang Zhao 1, 2, 3, 4, 5 , Rongliang Wu 1, 2, 3, 4, 5 , Hongyao Xu 1, 2, 3, 4, 5
Affiliation  

A novel multifunctional sensing material, RSPT, incorporating rhodamine B hydrazide, a Schiff base, and a phenolic hydroxyl group into triazine, was identified and prepared. After the molecular structure was characterized by FTIR, 1H NMR, mass spectra and element analysis, it was notably found that there were multichannel turn-on fluorescent responses to Zn2+ and Bi3+, i.e., a strong fluorescence emission at 481 nm in DMF–water (99/1, v/v) for Zn2+ with a color change from colorless to light yellow-green, while an increased fluorescence emission at 580 nm in CH3CN–water (99/1, v/v) for Bi3+ with a color change from colorless to red. Their different action mechanisms for the RSPT–Zn2+ and RSPT–Bi3+ complexes were investigated and confirmed by means of fluorescent titration, binding constant, Job's plot curve, 1H NMR titration, and theoretical simulation. RSPT would be a promising turn-on fluorescent chemo-dosimeter for multichannel detection of Zn2+ and Bi3+ with a detection limit of 3.0 nM for Zn2+ and 8.6 nM for Bi3+.

中文翻译:

新型开启荧光探针,用于不同作用机理 的Zn 2+和Bi 3+多通道检测

鉴定并制备了将罗丹明B酰肼,席夫碱和酚羟基结合到三嗪中的新型多功能传感材料RSPT。通过FTIR,1 H NMR,质谱和元素分析对分子结构进行表征后,发现对Zn 2+和Bi 3+具有多通道开启荧光响应,在481 nm处有较强的荧光发射。在DM 2-水(99/1,v / v)中,Zn 2+的颜色从无色变为浅黄绿色,而在CH 3 CN-水中(580/99),在580 nm处荧光发射增加(99/1,v / v) v)对于Bi 3+颜色从无色变为红色。通过荧光滴定,结合常数,Job's图曲线,1 H NMR滴定和理论模拟,研究并证实了它们对RSPT-Zn 2+和RSPT-Bi 3+配合物的不同作用机理。RSPT将是一个有前途的开启荧光化疗剂量计多通道检测锌2+和Bi 3+与3.0纳米的锌的检测限2+和8.6纳米的双3+
更新日期:2017-12-08
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