Analytical characterization of label-free immunosensor subsystems based on multi-walled carbon nanotube array-modified gold interface.

Abstract:

:In the present work, we report characterization studies of antigen(Ag)-antibody (Ab) interaction based on the multi-walled carbon nanotube array-modified gold electrode for label-free electrochemical immunosensor. -COOH functionalization of MWCNT was suggested by FTIR spectroscopy. Images from atomic force microscopy (AFM) and RAMAN spectroscopy confirmed the interaction of Ab on the gold interface based on the MWCNT array. A cyclic voltammetric study exhibited a linear response in phosphate buffered saline (PBS) solution including 1mM K3Fe (CN) 6 at pH 7.4 with PSA concentrations over a range of 2 to 40 ngmL(-1), and a calculated detection limit of 0.56 ngmL(-1).

authors

Zahmatkeshan M,Ilkhani H,Paknejad M,Adel M,Sarkar S,Saber R

doi

10.2174/1386207318666141212165513

subject

Has Abstract

pub_date

2015-01-01 00:00:00

pages

83-8

issue

1

eissn

1386-2073

issn

1875-5402

pii

CCHTS-EPUB-63963

journal_volume

18

pub_type

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