A highly sensitive and selective naked-eye probe for detection of Fe3+ based on a 2,5-bis[3-benzyl-2-methylbenzothiazole]-croconaine期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

A highly sensitive and selective naked-eye probe for detection of Fe3+ based on a 2,5-bis[3-benzyl-2-methylbenzothiazole]-croconaine

Authors:	Shouchen Ye Qian Liang Zhongyu Li Song Xu Chao Yao

Affiliation:	1. Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, PR China;2. Jiangsu Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, PR China

Abstract:	A highly sensitive and selective naked-eye probe, 2,5-bis[3-benzyl-2-methylbenzothiazole]-croconaine (BMC) for sensing of Fe³⁺ was synthesized and characterized. The BMC can selectively recognize Fe³⁺ among the test cations (Ni²⁺, Mg²⁺, Cu²⁺, Ca²⁺, Na⁺, K⁺, Cr³⁺, Ag⁺, Ba²⁺, Zn²⁺, Pb²⁺, Al³⁺, Fe³⁺, Cd²⁺, Co²⁺) in DMF/H₂O (4:1, v/v). The binding constant of BMC-Fe³⁺ was evaluated by using Benesi-Hildebrand plot. Simultaneously, the binding mode of BMC-Fe³⁺ was supporting by Job's plot, ESI-MS, FT-IR and ¹H NMR. Correspondingly, the morphology of chelate complex was investigated by FESEM. Moreover, Fe³⁺ and EDTA could be employed as inputs and the fluorescence emission intensity which was 816 nm as output so that a molecular logic gate could be realized.

Keywords:	Naked-eye probe Croconaine Iron ion (III) Molecular logic gate
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