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2017 ; 7
(1
): 9441
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gab.com Text
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English Wikipedia
Ammonia plasma-treated electrospun polyacrylonitryle nanofibrous membrane: the
robust substrate for protein immobilization through glutaraldhyde coupling
chemistry for biosensor application
#MMPMID28842632
Mahmoudifard M
; Soleimani M
; Vossoughi M
Sci Rep
2017[Aug]; 7
(1
): 9441
PMID28842632
show ga
The surface of polyacrylonitrile electrospun nanofibrous membrane (PAN NFM) was
aminated by the ammonia plasma treatment. The content of amine groups has been
estimated for different time of plasma treatment. The newly generated amine
groups were successfully activated by glutaraldehyde (Ga) for the covalent
attachment of the protein molecules on the NFM surface. Bio-functionalization of
ammonia plasma treated PAN NFM was carried out by the primary antibodies (Ab)
immobilization as a protein model through Ga coupling chemistry. For comparison,
the immobilization of Ab was also performed through physical interactions.
Attenuated total reflection-fourier transform infrared spectroscopy (ATR-FTIR)
was used for the characterization of surface functional groups of PAN NFM after
different modifications. The surface morphology of the NFM after immobilization
was characterized using scanning electron microscope (SEM). The efficacy of Ab
immobilization was estimated by enzyme-linked immuno sorbent assay (ELISA)
method. X- Ray photoelectron spectroscopy (XPS) was performed to confirm the
covalent immobilization of Ab on the modified PAN NFM. Results show that ammonia
plasma treatment effectively increased the amount of Ab immobilization through Ga
coupling chemistry. Our findings suggest that this is a versatile model for the
preparation of stable bio-functionalized NFM which is applicable in different
field of biomedical science.