Conductive quantum dot-encapsulated electrospun nanofibers from polystyrene and polystyrene-co-maleic anhydride copolymer blend as gas sensors

Rameshwar Tatavarty; Ee Taek Hwang; Jee Woong Park; Jun Hyuk Kwak; Jeong O. Lee; Man Bock Gu

doi:10.1016/j.reactfunctpolym.2010.11.029

Conductive quantum dot-encapsulated electrospun nanofibers from polystyrene and polystyrene-co-maleic anhydride copolymer blend as gas sensors

Rameshwar Tatavarty
, Ee Taek Hwang
, Jee Woong Park
, Jun Hyuk Kwak
, Jeong O. Lee
, Man Bock Gu

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

34 Citations (Scopus)

Abstract

Electrospinning was employed to obtain uniformly distributed Cadmium Selenide (CdSe)/Zinc Sulfide (ZnS) core shell quantum dot (QD) encapsulated nanofibers in polymeric mixture of 4:1 ratio of polystyrene (PS) and polystyrene-co-maleic anhydride (PSMA). Fluorescence and scanning electron microscopy (SEM) measurements were used to evaluate the uniform size distribution and uniformity of PS-PSMA nanofibers with high aspect ratios. The introduction of QDs only into the PS-PSMA nanofibers induced electrical conductivity. They also showed a two to three fold increase in electrical conductivity in the presence of volatile organic compounds. The obtained quantum-dot nanofibers (Qd-NFs) were 600-650 nm thick, photostable for more than six months, and applicable for electrical conductance or gas-based sensing applications.

Original language	English
Pages (from-to)	104-108
Number of pages	5
Journal	Reactive and Functional Polymers
Volume	71
Issue number	2
DOIs	https://doi.org/10.1016/j.reactfunctpolym.2010.11.029
Publication status	Published - 2011 Feb

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea Grant, funded by the Korean Government (MEST) (NRF-C1ABA001-2010-0020501).

Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.

Keywords

Conductivity
Electrospun nanofibers
Gas sensor
Quantum dots

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
Biochemistry
General Chemical Engineering
Polymers and Plastics
Materials Chemistry

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10.1016/j.reactfunctpolym.2010.11.029

Cite this

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title = "Conductive quantum dot-encapsulated electrospun nanofibers from polystyrene and polystyrene-co-maleic anhydride copolymer blend as gas sensors",

abstract = "Electrospinning was employed to obtain uniformly distributed Cadmium Selenide (CdSe)/Zinc Sulfide (ZnS) core shell quantum dot (QD) encapsulated nanofibers in polymeric mixture of 4:1 ratio of polystyrene (PS) and polystyrene-co-maleic anhydride (PSMA). Fluorescence and scanning electron microscopy (SEM) measurements were used to evaluate the uniform size distribution and uniformity of PS-PSMA nanofibers with high aspect ratios. The introduction of QDs only into the PS-PSMA nanofibers induced electrical conductivity. They also showed a two to three fold increase in electrical conductivity in the presence of volatile organic compounds. The obtained quantum-dot nanofibers (Qd-NFs) were 600-650 nm thick, photostable for more than six months, and applicable for electrical conductance or gas-based sensing applications.",

keywords = "Conductivity, Electrospun nanofibers, Gas sensor, Quantum dots",

author = "Rameshwar Tatavarty and Hwang, \{Ee Taek\} and Park, \{Jee Woong\} and Kwak, \{Jun Hyuk\} and Lee, \{Jeong O.\} and Gu, \{Man Bock\}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea Grant, funded by the Korean Government (MEST) (NRF-C1ABA001-2010-0020501). Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

year = "2011",

month = feb,

doi = "10.1016/j.reactfunctpolym.2010.11.029",

language = "English",

volume = "71",

pages = "104--108",

journal = "Reactive and Functional Polymers",

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AU - Tatavarty, Rameshwar

AU - Hwang, Ee Taek

AU - Park, Jee Woong

AU - Kwak, Jun Hyuk

AU - Lee, Jeong O.

AU - Gu, Man Bock

N1 - Funding Information: This work was supported by the National Research Foundation of Korea Grant, funded by the Korean Government (MEST) (NRF-C1ABA001-2010-0020501). Copyright: Copyright 2011 Elsevier B.V., All rights reserved.

PY - 2011/2

Y1 - 2011/2

N2 - Electrospinning was employed to obtain uniformly distributed Cadmium Selenide (CdSe)/Zinc Sulfide (ZnS) core shell quantum dot (QD) encapsulated nanofibers in polymeric mixture of 4:1 ratio of polystyrene (PS) and polystyrene-co-maleic anhydride (PSMA). Fluorescence and scanning electron microscopy (SEM) measurements were used to evaluate the uniform size distribution and uniformity of PS-PSMA nanofibers with high aspect ratios. The introduction of QDs only into the PS-PSMA nanofibers induced electrical conductivity. They also showed a two to three fold increase in electrical conductivity in the presence of volatile organic compounds. The obtained quantum-dot nanofibers (Qd-NFs) were 600-650 nm thick, photostable for more than six months, and applicable for electrical conductance or gas-based sensing applications.

AB - Electrospinning was employed to obtain uniformly distributed Cadmium Selenide (CdSe)/Zinc Sulfide (ZnS) core shell quantum dot (QD) encapsulated nanofibers in polymeric mixture of 4:1 ratio of polystyrene (PS) and polystyrene-co-maleic anhydride (PSMA). Fluorescence and scanning electron microscopy (SEM) measurements were used to evaluate the uniform size distribution and uniformity of PS-PSMA nanofibers with high aspect ratios. The introduction of QDs only into the PS-PSMA nanofibers induced electrical conductivity. They also showed a two to three fold increase in electrical conductivity in the presence of volatile organic compounds. The obtained quantum-dot nanofibers (Qd-NFs) were 600-650 nm thick, photostable for more than six months, and applicable for electrical conductance or gas-based sensing applications.

KW - Conductivity

KW - Electrospun nanofibers

KW - Gas sensor

KW - Quantum dots

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DO - 10.1016/j.reactfunctpolym.2010.11.029

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ER -

Conductive quantum dot-encapsulated electrospun nanofibers from polystyrene and polystyrene-co-maleic anhydride copolymer blend as gas sensors

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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