Guanine oxidation signal enhancement in single strand DNA with polyacrylonitrile/polyaniline (PAN/PAni) hybrid nanofibers

Küçük Resim Yok

Tarih

2018

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Wiley

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

Pure polyacrylonitrile (PAN) and polyacrylonitrile/polyaniline (PAN/PAni) hybrid nanofibers (NFs) were produced via electrospinning and used to monitor guanine oxidation in single strand DNA (ssDNA) by electrochemical methods. Two different methodologies were conducted. First, pre-synthesized PAni was added into electrospinning PAN solution and electrospun into composite PAN/PAni nanofibrous structure on cylindrical pencil graphite (PGE) surface. In the second route, PAN NFs were electrospun on a PGE surfaces and polymerization of PAni was conducted on the surfaces of the as-spun PAN NFs. NFs were kept at -18 degrees C in a refrigerator for several days. ssDNA was immobilized on the prepared NFs and guanine oxidation signals were observed for each system. The results revealed that use of PAN NFs enhanced signal intensity from 0.92 mu A (PGE) to 1.04 mu A (PAN NFs). Addition of PAni to PAN increased signal intensity to 1.23 mu A. When the PAN NF surfaces were coated with PAni, signal enhancement continued to increase up to 4.19 mu A for fourth day and decreased again when PAni-coated NFs were kept at -18 degrees C in the refrigerator. Since the prepared system is fast and cheap, it is promising for application in DNA biosensor devices. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45567.

Açıklama

Anahtar Kelimeler

biomedical applications, electrospinning, manufacturing, membranes, nucleic acids

Kaynak

Journal Of Applied Polymer Science

WoS Q Değeri

Q2

Scopus Q Değeri

Q2

Cilt

135

Sayı

3

Künye