کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
740480 1462108 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparative study of colorimetric sensors based on newly synthesized Schiff bases
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Comparative study of colorimetric sensors based on newly synthesized Schiff bases
چکیده انگلیسی

New sensitive cation receptors 2a and 2b containing oligoether linked Schiff bases were prepared and their ability to calorimetrically sense transition metal ions was investigated. Addition of metal ions to a methanol solution of 2a, 2b can result in an obvious colour change (from colourless to yellowish-brown for Cu2+ and colourless to yellow for Co2+, Ni2+, Cd2+, Zn2+) and UV–vis absorption spectral change in a short time. The colour change and binding ability of receptors with Cu2+ ion are more compare to other ions, the detection limit is allowable to 1.0 × 10−5 and 1.0 × 10−6 M level of Cu2+, 1.0 × 10−4 and 1.0 × 10−5 M level of Co2+, Ni2+, Cd2+, Zn2+ according to visual colour change and UV–vis spectral change, respectively. This indicated that these two receptors are highly selective for those metal ions over other ions like Ca2+, Mg2+, Mn2+, Hg2+, Cr3+, Fe2+, Pb2+.

Colour changes of receptors after addition of Cu2+ (colourless to yellowish-brown).Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 182, June 2013, Pages 642–651
نویسندگان
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