A study on generation of embossed carbon nanopattern by induced microdomain alignments in PAN-based block copolymer under electric field

Joo, Seokwon; Kim, Bo-Myung; An, Jaieun; Park, Minji; Seo, Soonmin; Park, Jeong Yong; Bae, Joonwon

doi:10.1007/s10853-018-2132-8

J Mater Sci

2018

DOI: 10.1007/s10853-018-2132-8

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A study on generation of embossed carbon nanopattern by induced microdomain alignments in PAN-based block copolymer under electric field

Seokwon Joo

Bo-Myung Kim

Jaieun An

et al.

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Cited by 3 publications

(1 citation statement)

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“…The excellent function of the cortisol aptasensor was characterized after transfer to polyethylene terephthalate (PET). The cortisol aptasensor consisted of aptamer-conjugated poly(3,4-ethylenedioxythiophene) (PEDOT)-polyacrylonitrile (PAN) nanofibers (NFs), which were used as a channel as they were proven for cortisol detection in previous studies and showed high performance with a detection limit of 10 pM and high selectivity in the presence of several interfering materials at concentrations 100 times higher than that of cortisol. − This extends the high potential utility of swappable and wearable cortisol aptasensors. These results introduce the possibility of a portable and on-site monitoring system by being successfully applied on various substrates.…”

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confidence: 92%

Wearable Cortisol Aptasensor for Simple and Rapid Real-Time Monitoring

Kim

Park

et al. 2022

ACS Sens.

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The necessity of managing stress levels is becoming increasingly apparent as the world suffers from different kinds of stresses including the extent of pandemic, the corona virus disease 2019 . Cortisol, a clinically confirmed stress hormone related to depression and anxiety, affects individuals mentally and physically. However, current cortisol monitoring methods require expert personnel, large and complex machines, and long time for data analysis. Here, we present a flexible and wearable cortisol aptasensor for simple and rapid cortisol real-time monitoring. The sensing channel was produced by electrospinning conducting polyacrylonitrile (PAN) nanofibers (NFs) and subsequent vapor deposition of carboxylated poly(3,4-ethylenedioxythiophene) (PEDOT). The conjugation of the cortisol aptamer on the PEDOT-PAN NFs provided the critical sensing mechanism for the target molecule. The sensing test was performed with a liquid-ion gated field-effect transistor (FET) on a polyester (polyethylene terepthalate). The sensor performance showed a detection limit of 10 pM (<5 s) and high selectivity in the presence of interference materials at 100 times higher concentrations. The practical usage and real-time monitoring of the cortisol aptasensor with a liquid-ion gated FET system was demonstrated by successful transfer to the swab and the skin. In addition, the real-time monitoring of actual sweat by applying the cortisol aptasensor was also successful since the aptasensor was able to detect cortisol approximately 1 nM from actual sweat in a few minutes. This wearable biosensor platform supports the possibility of further application and on-site monitoring for changes of other numerous biomarkers.

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confidence: 92%

Wearable Cortisol Aptasensor for Simple and Rapid Real-Time Monitoring

Kim

Park

et al. 2022

ACS Sens.

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Preparation of carbonaceous monolith from polyacrylonitrile@lignin hybrid composite and its sensing and adsorption capability

Kang

Hong

Hur

et al. 2023

Korean J. Chem. Eng.

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Copper(II) Ion-Doped Polyimide Composite for Nonenzymatic Electrochemical Hydrogen Peroxide Sensing

Chen¹

2019

International Journal of Electrochemical Science

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A simple and facile nonenzymatic electrochemical sensor for the amperometric detection of H2O2 was developed using a copper (II) ion-doped polyimide (PI)-modified glassy carbon electrode (GCE). The resulting Cu/PI-GCE exhibited sufficient electrocatalytic activity for both the reduction and oxidation of H2O2 over a wide pH range. In the cathodic detection mode at-0.2 V vs. Ag/AgCl, the linear calibration range of H2O2 was 0.01 mM to 20 mM, and the limit of detection was found to be 3.8 µM (S/N=3). In the anodic detection mode at +0.6 V vs. Ag/AgCl, the Cu/PI-GCE showed a wide linear range from 0.03 mM to 5 mM, and the limit of detection was determined to be 14.1 µM (S/N=3). In both detection modes, the response time was less than 4 s. The Cu/PI-GCE showed acceptable selectivity and was able to detect the presence of H2O2 in tap water. Furthermore, the Cu/PI-GCE exhibited excellent reproducibility and long-term storage stability (under dry conditions).

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A study on generation of embossed carbon nanopattern by induced microdomain alignments in PAN-based block copolymer under electric field

Cited by 3 publications

References 28 publications

Wearable Cortisol Aptasensor for Simple and Rapid Real-Time Monitoring

Wearable Cortisol Aptasensor for Simple and Rapid Real-Time Monitoring

Preparation of carbonaceous monolith from polyacrylonitrile@lignin hybrid composite and its sensing and adsorption capability

Copper(II) Ion-Doped Polyimide Composite for Nonenzymatic Electrochemical Hydrogen Peroxide Sensing

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