Thakur, Arunabha ; Mandal, Dipendu ; Ghosh, Sundargopal (2013) A triazole based triferrocene derivative as a multiresponsive chemosensor for Hg(II) ion and a redox chemosensor for H2PO4− ion Journal of Organometallic Chemistry, 726 . pp. 71-78. ISSN 0022-328X
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.jorganchem.2012.11.031
Abstract
A triazole tethered triferrocene receptor, C40H40O2N6Fe3 3, has been synthesized from the reaction of mono-alkynyl substituted ferrocene, 1 and 1,1′-bis-(azidomethyl)ferrocene, 2. Consequently the cation and anion sensing properties of 3 have been examined. The receptor 3 was found to be highly selective electrochemical [Math Processing Error], optical and chromogenic chemosensor for Hg2+ ion in aqueous environment. The substantial changes in its absorption spectra are accompanied by the appearance of a new low-energy peak at 631 nm (ɛ = 3400 M−1 cm−1). This is also accompanied by a strong color change from yellow to purple, that allows a prospective for the “naked eye” detection of Hg2+ ion over other competitor cations such as Pb2+, Cd2+, Zn2+, etc. In addition, among various anions, 3 shows a distinct electrochemical recognition of dihydrogen phosphate anion by its multiple H-bonding (C–H⋯O), which is supported by electrochemical (large cathodic shift ΔE1/2 = −175 mV) and 1H NMR titration results.
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
Keywords: | Triferrocene; Chemosensor; Hg2+ ion; H2PO4− ion; Aqueous Environment |
ID Code: | 108924 |
Deposited On: | 31 Jan 2018 12:20 |
Last Modified: | 31 Jan 2018 12:20 |
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