A simple 2,6-bis(2-benzimidazole)pyridyl incorporated optical probe affording selective ratiometric targeting of biologically and environmentally significant Zn2+ under buffer condition

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• 作者：Sabir H. Mashraqui ; Mukesh Chandiramani…
• 关键词：2 ; 6 ; Bis(2 ; benzimidazole)pyridine incorporated probe ; Synthesis ; UV–visible ; Fluorescence ; Ratiometric Zn2+ sensor
• 刊名：Journal of Inclusion Phenomena and Macrocyclic Chemistry
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：84
• 期：1-2
• 页码：129-135
• 全文大小：705 KB
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• 作者单位：Sabir H. Mashraqui (1)
  Mukesh Chandiramani (1)
  Sushil Ghorpade (1)
  Jyoti Upathayay (1)
  Rupesh Mestri (1)
  Aniket Chilekar (1)
  
  1. University of Mumbai, Mumbai, Maharastra, India
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Organic Chemistry
  Food Science
  Crystallography
  
• 出版者：Springer Netherlands
• ISSN：1573-1111

文摘

A new chemosensor, designated as Dibcid has been synthesized in two steps from readily accessible 2,6-bis(2-benzimidazole)pyridine. Our photophysical studies revealed that of the several metal ions examined, biologically and environmentally significant Zn2+ exhibited highly selective emission wavelength shifts under the buffer condition. In contrast to Zn2+, the coordinatively competing and toxic Cd2+ elicited less remarkable optical responses as evidenced by its two order of magnitude lower stability constant compared to that of Zn2+. Moreover, metal ions, viz. Li+, Na+, K+, Mg2+, Ca2+, Ba2+, Co2+, Ni2+, Cu2+, Hg2+ and Pb2+ exhibited insignificant optical perturbations even in concentrations far exceeding Zn2+. Clearly, the probe has the attributes to selectively target Zn2+ by ratiometric analysis under buffer conditions. Keywords 2,6-Bis(2-benzimidazole)pyridine incorporated probe Synthesis UV–visible Fluorescence Ratiometric Zn2+ sensor