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 journalArticle

26 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 languageEnglish
Pages (from-to)104-108
Number of pages5
JournalReactive and Functional Polymers
Volume71
Issue number2
DOIs
Publication statusPublished - 2011 Feb 1

Fingerprint

Maleic Anhydrides
Nanofibers
Quantum Dots
Polystyrenes
Maleic anhydride
Chemical sensors
Semiconductor quantum dots
electrical conductivity
Copolymers
Gases
sensor
gas
volatile organic compound
Electric Conductivity
fluorescence
cadmium
zinc
scanning electron microscopy
sulfide
shell

Keywords

  • Conductivity
  • Electrospun nanofibers
  • Gas sensor
  • Quantum dots

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Chemistry(all)
  • Chemical Engineering(all)
  • Environmental Chemistry
  • Biochemistry

Cite this

Conductive quantum dot-encapsulated electrospun nanofibers from polystyrene and polystyrene-co-maleic anhydride copolymer blend as gas sensors. / Tatavarty, Rameshwar; Hwang, Ee Taek; Park, Jee Woong; Kwak, Jun Hyuk; Lee, Jeong O.; Gu, Man Bock.

In: Reactive and Functional Polymers, Vol. 71, No. 2, 01.02.2011, p. 104-108.

Research output: Contribution to journalArticle

Tatavarty, Rameshwar ; Hwang, Ee Taek ; Park, Jee Woong ; Kwak, Jun Hyuk ; Lee, Jeong O. ; Gu, Man Bock. / Conductive quantum dot-encapsulated electrospun nanofibers from polystyrene and polystyrene-co-maleic anhydride copolymer blend as gas sensors. In: Reactive and Functional Polymers. 2011 ; Vol. 71, No. 2. pp. 104-108.
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