An easily accessible optical chemosensor for Cu2+ based on novel imidazoazine framework, its performance characteristics and potential applications

SENSORS AND ACTUATORS B-CHEMICAL

卷:240

Article

Kumawat, Lokesh Kumar¹  Kumar, Manoj²  Bhatt, Priyanka³  Sharma, Anuj²  Asif, M.⁴  Gupta, Vinod Kumar¹ 

[1] Univ Johannesburg, Dept Appl Chem, Doornfontein Campus, Johannesburg, South Africa

[2] Indian Inst Technol Roorkee, Dept Chem, Roorkee 247667, Uttarakhand, India

[3] GITAM Univ, GITAM Inst Sci, Dept Chem, Visakhapatnam 530045, Andhra Pradesh, India

[4] King Saud Univ, Dept Chem Engn, Riyadh, Saudi Arabia

关键词: Cu2+ sensing;    Fluorescent sensor;    Multicomponent reaction;    Imidazo[1,2-a]-pyridine;    Grobke product;   

DOI  :  10.1016/j.snb.2016.08.184

来源: Elsevier

【 摘 要 】

Despite the fact that a large number of chemical sensors for Cu2+ have been proposed by different groups in recent past, most of them fall into very few classes of molecular framework with similar utilities and limitations. In order to broaden the scope and to overcome the limitation of present day chemical sensors, design, synthesis and testing of molecular systems based on novel fluoro/chromophore is a research goal of significant interest. In the present report, two novel furan-2-yl substituted imidazoazine based optic chemosensors (IA-1 and IA-2) for Cu2+ have been disclosed for the first time. Proposed sensors were found to have high association constants (10(4) M-1), acceptable detection limits (10(-7) M), high selectivity and reversibility/reusability. Different aspects of this sensing phenomenon were studied using fluorescence spectroscopy and NMR based titrations. Designed probe have shown potential applications in the area of sample monitoring, photo-printing and membrane sensing. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

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