التفاصيل البيبلوغرافية
| العنوان: |
A dual-channel chemosensor based on rhodamine and BODIPY conjugated dyad for ratiometric detection of Hg2+ and fluorescence on–off recognition of Cu2+ in aqueous solution and living cells. |
| المؤلفون: |
Ma, Li, Xu, Gongnv, Deng, Xuankai, Wen, Dan, Yu, Yanhua |
| المصدر: |
Chemical Papers; Jan2023, Vol. 77 Issue 1, p583-593, 11p |
| مستخلص: |
A novel probe RB for discriminative detection of Hg2+ and Cu2+ constructed by rhodamine and BODIPY was designed and synthesized. Probe RB consists of three parts: BODIPY as the energy donor, rhodamine as the energy receptor, and thiosemicarbazide as the reacting site. Probe RB selectively binds with Hg2+ and Cu2+ ions in in EtOH/H2O (V/V = 1:1) among tested metal ions. Probe RB exhibited a fluorescence red shift from 513 to 593 nm for Hg2+ and a fluorescence quenching for Cu2+. The mechanism study showed that the fluorescence changes of probe RB after the addition of Hg2+ was due to oxadiazole formation when the thiosemicarbazide moiety was liberated by Hg2+-facilitated ring opening of the spirocyclic group, while Cu2+ not only opened the spirolactam ring, but also bonded to the opening product through 1:2 mode. It is worth noting that all these types of probes could only detect Hg2+ or Cu2+ through metal ions-facilitated ring opening of the spirocyclic group mechanism. To the best of our knowledge, probe RB was firstly reported to detect Hg2+ and Cu2+ discriminatively. Moreover, probe RB demonstrated excellent sensitivity toward Hg2+ (LOD 8.36 nM) and Cu2+ (LOD 0.16 μM), fast responsive time (within 30 s) and wide pH range (6.0–10.0 for Hg2+, 6.0–11 for Cu2+). This probe was further successfully applied to Hela cells and could easily discriminate Hg2+ and Cu2+ through double-channel imaging. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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