A Highly Sensitive Colorimetric Chemosensor for Iron(Ⅱ) and Iron(Ⅲ) Ions

doi:10.7517/j.issn.1674-0475.2009.01.8

Abstract

Abstract: In this work a new compound(E)-4’-(4-(2-(2-naphthalenyl)vinyl)phenyl)-2,2’:6’,2”-terpyridine L was synthesized,characterized and used to recognize iron ions.Upon addition of Fe(II) or Fe(III),the solution(V(CHCl3):V(ethanol)=1:20) of L can show magenta or orange-red color in visible region,respectively.And in the UV-vis spectrum of L in solution there emerge two characteristic peaks at 374 and 574 nm.Furthermore,the response of L to iron ions is highly sensitive and selective even though in the presence of other metal ions.The limit of detection(LOD) and linear concentration range for iron(II)/iron(III) and iron(II+III) were studied,too.

Key words: colorimetry, chemosensor, terpyridine derivative, Fe²⁺, Fe³⁺

CLC Number:

WANG Jun, XU Quan-qing, CHI Shao-ming, ZHANG Hui-miao, FU Wen-fu. A Highly Sensitive Colorimetric Chemosensor for Iron(Ⅱ) and Iron(Ⅲ) Ions[J]. Imaging Science and Photochemistry, 2009, 27(1): 8-15.

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