Versatile chemical sensors using oligosaccharides on cleanable PDMS/graphene hybrids for monitoring environmentally hazardous substances

Joonwon Bae; Yunjung Hwang; Ji Hwan Ha; Oh Seok Kwon; Ayeon Jang; Hye Jun Kim; Jaieun An; Chang Soo Lee; Sung Hoon Park

doi:10.1016/j.apsusc.2019.145139

Versatile chemical sensors using oligosaccharides on cleanable PDMS/graphene hybrids for monitoring environmentally hazardous substances

Joonwon Bae, Yunjung Hwang, Ji Hwan Ha, Oh Seok Kwon, Ayeon Jang, Hye Jun Kim, Jaieun An, Chang Soo Lee, Sung Hoon Park

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

A versatile chemical sensor possessing a nontoxic sensing medium was produced for the detection of chemical environmental hazards. Poly(dimethylsiloxane) (PDMS)/graphene (GR) hybrids were employed as sensor substrates owing to their high electrical conductivity. The PDMS/GR hybrid substrates exhibited a significant change in electrical threshold above 1.2 wt% GR loading. Oligosaccharides, such as beta-cyclodextrin (beta-CD), were introduced and used as sensing media for the detection of potentially hazardous molecules. The successful introduction of the sensing medium was confirmed by a variety of instrumental analyses. The sensor signal generated by addition of target analyte originated from charge transport associated with the formation of beta-CD-analyte inclusion compounds, which were monitored by ultraviolet (UV) spectroscopy. The performance of this sensor system was examined using various concentrations of a model analyte, methyl paraben (MePRB), and yielded a limit of detection of approximately 10 nM.

Original language	English
Article number	145139
Journal	Applied Surface Science
Volume	507
DOIs	https://doi.org/10.1016/j.apsusc.2019.145139
State	Published - 30 Mar 2020
Externally published	Yes

Keywords

Chemical sensor
Cyclodextrin
Graphene
Inclusion complex
Oligosaccharide
Poly(dimethylsiloxane)

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10.1016/j.apsusc.2019.145139

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@article{f31ec144d1604440b26aac5f469d594e,

title = "Versatile chemical sensors using oligosaccharides on cleanable PDMS/graphene hybrids for monitoring environmentally hazardous substances",

abstract = "A versatile chemical sensor possessing a nontoxic sensing medium was produced for the detection of chemical environmental hazards. Poly(dimethylsiloxane) (PDMS)/graphene (GR) hybrids were employed as sensor substrates owing to their high electrical conductivity. The PDMS/GR hybrid substrates exhibited a significant change in electrical threshold above 1.2 wt\% GR loading. Oligosaccharides, such as beta-cyclodextrin (beta-CD), were introduced and used as sensing media for the detection of potentially hazardous molecules. The successful introduction of the sensing medium was confirmed by a variety of instrumental analyses. The sensor signal generated by addition of target analyte originated from charge transport associated with the formation of beta-CD-analyte inclusion compounds, which were monitored by ultraviolet (UV) spectroscopy. The performance of this sensor system was examined using various concentrations of a model analyte, methyl paraben (MePRB), and yielded a limit of detection of approximately 10 nM.",

keywords = "Chemical sensor, Cyclodextrin, Graphene, Inclusion complex, Oligosaccharide, Poly(dimethylsiloxane)",

author = "Joonwon Bae and Yunjung Hwang and Ha, \{Ji Hwan\} and Kwon, \{Oh Seok\} and Ayeon Jang and Kim, \{Hye Jun\} and Jaieun An and Lee, \{Chang Soo\} and Park, \{Sung Hoon\}",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2020",

month = mar,

day = "30",

doi = "10.1016/j.apsusc.2019.145139",

language = "English",

volume = "507",

journal = "Applied Surface Science",

issn = "0169-4332",

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T1 - Versatile chemical sensors using oligosaccharides on cleanable PDMS/graphene hybrids for monitoring environmentally hazardous substances

AU - Bae, Joonwon

AU - Hwang, Yunjung

AU - Ha, Ji Hwan

AU - Kwon, Oh Seok

AU - Jang, Ayeon

AU - Kim, Hye Jun

AU - An, Jaieun

AU - Lee, Chang Soo

AU - Park, Sung Hoon

PY - 2020/3/30

Y1 - 2020/3/30

N2 - A versatile chemical sensor possessing a nontoxic sensing medium was produced for the detection of chemical environmental hazards. Poly(dimethylsiloxane) (PDMS)/graphene (GR) hybrids were employed as sensor substrates owing to their high electrical conductivity. The PDMS/GR hybrid substrates exhibited a significant change in electrical threshold above 1.2 wt% GR loading. Oligosaccharides, such as beta-cyclodextrin (beta-CD), were introduced and used as sensing media for the detection of potentially hazardous molecules. The successful introduction of the sensing medium was confirmed by a variety of instrumental analyses. The sensor signal generated by addition of target analyte originated from charge transport associated with the formation of beta-CD-analyte inclusion compounds, which were monitored by ultraviolet (UV) spectroscopy. The performance of this sensor system was examined using various concentrations of a model analyte, methyl paraben (MePRB), and yielded a limit of detection of approximately 10 nM.

AB - A versatile chemical sensor possessing a nontoxic sensing medium was produced for the detection of chemical environmental hazards. Poly(dimethylsiloxane) (PDMS)/graphene (GR) hybrids were employed as sensor substrates owing to their high electrical conductivity. The PDMS/GR hybrid substrates exhibited a significant change in electrical threshold above 1.2 wt% GR loading. Oligosaccharides, such as beta-cyclodextrin (beta-CD), were introduced and used as sensing media for the detection of potentially hazardous molecules. The successful introduction of the sensing medium was confirmed by a variety of instrumental analyses. The sensor signal generated by addition of target analyte originated from charge transport associated with the formation of beta-CD-analyte inclusion compounds, which were monitored by ultraviolet (UV) spectroscopy. The performance of this sensor system was examined using various concentrations of a model analyte, methyl paraben (MePRB), and yielded a limit of detection of approximately 10 nM.

KW - Chemical sensor

KW - Cyclodextrin

KW - Graphene

KW - Inclusion complex

KW - Oligosaccharide

KW - Poly(dimethylsiloxane)

UR - https://www.scopus.com/pages/publications/85077155234

U2 - 10.1016/j.apsusc.2019.145139

DO - 10.1016/j.apsusc.2019.145139

M3 - Article

AN - SCOPUS:85077155234

SN - 0169-4332

VL - 507

JO - Applied Surface Science

JF - Applied Surface Science

M1 - 145139

ER -

Versatile chemical sensors using oligosaccharides on cleanable PDMS/graphene hybrids for monitoring environmentally hazardous substances

Abstract

Keywords

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