NDLI: ELECTROSPUN NANOFIBROUS POLYMER AS RESPONSIVE FLUORESCENCE BASED DETECTOR FOR Cd (II) METAL ION IN AQUEOUS SOLUTION

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ELECTROSPUN NANOFIBROUS POLYMER AS RESPONSIVE FLUORESCENCE BASED DETECTOR FOR Cd (II) METAL ION IN AQUEOUS SOLUTION

Content Provider	Semantic Scholar
Author	Adewuyi, Sheriff
Copyright Year	2015
Abstract	A new fluorescent electrospun fiber polymer 1-(2-Pyridylazo)-2-naphthol (PAN) − poly(acrylic acid) (PAA) previously synthesized by covalent functionalization of PAN into PAA and electrospinning technique was applied for Cd 2+ probe via fluorescence enhancement due to coordination of the metal ion. The fluorescent indicator molecule (PAN−PAA) exhibits distinct and well-defined emission peak. Emission maximum of the functionalized polymer molecule appeared at 593 nm which is indicative of a good Stokes’ shift. In order to get clearer insight into the florescence of the functionalized polymer, the fluorescence behavior was measured with addition of various metal (Cd 2+ ,Cr 3+ ,Co 2+ ,Fe 2+ andNi 2+ ). The fluorescence “turn-on” effect of PAN−PAA upon addition of Cd 2+ was predominant. It was observed that addition of Cd 2+ at trace concentration of 5.0 µM increases the emission intensity dramatically up to 75%. However, compared with other competing metal ions, reduction in emission intensity was observed. More importantly with Ni 2+ where the fluorescence intensity at 593 nm decreased to less than 2%. Basically, non energy transfer and diamagnetic interactions are suggested to be responsible for this enhancement by transition metal ions. Keywords: Nanofiber, fluorescence, 1-(2-Pyridylazo)-2-naphthol, polyacrylic acid, cadmium
File Format	PDF HTM / HTML
Volume Number	40
Alternate Webpage(s)	http://journals.chemsociety.org.ng/index.php/jcsn/article/download/32/119
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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