Development and application of patterned conducting polymer thin films as chemoresponsive and electrochemically responsive optical diffraction gratings

A. M. Massari, K. J. Stevenson, Joseph T Hupp

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We describe the preparation of two-dimensionally patterned polyaniline (PANI) thin films via microtransfer molding and electropolymerization techniques. This procedure yields reproducible conducting polymer patterns with excellent feature periodicity, making them useful as diffraction gratings. The fabricated polymer gratings were characterized via tapping-mode atomic force microscopy. Spectroelectrochemistry was used to characterize the optical properties associated with various intrinsic PANI redox states. In accordance with the Kramers-Kronig relation for change-in-absorptivity and change-in-index-of-refraction, electrochemically induced changes in refractive index (detected via changes in diffraction efficiency) were observed to coincide with electrochemically-induced changes in the PANI electronic absorption spectrum. In addition, the higher oxidation states of PANI and the associated changes in refractive index proved accessible via chemical oxidation. Beyond the novelty of a chemically-switchable transmission grating, the response of this system points to the possibility of developing diffraction-based chemical sensing schemes.

Original languageEnglish
Pages (from-to)185-191
Number of pages7
JournalJournal of Electroanalytical Chemistry
Volume500
Issue number1-2
DOIs
Publication statusPublished - Mar 16 2001

Fingerprint

Diffraction gratings
Conducting polymers
Polyaniline
Polymer films
Thin films
Refractive index
Kramers-Kronig relations
Spectroelectrochemistry
Oxidation
Diffraction efficiency
Electropolymerization
Refraction
Molding
Absorption spectra
Atomic force microscopy
Polymers
Optical properties
Diffraction
polyaniline

Keywords

  • Electrochemical sensors
  • Optical diffraction gratings
  • Polyaniline

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

Cite this

@article{4d028421db8943bda4097fadfaa3c0c8,
title = "Development and application of patterned conducting polymer thin films as chemoresponsive and electrochemically responsive optical diffraction gratings",
abstract = "We describe the preparation of two-dimensionally patterned polyaniline (PANI) thin films via microtransfer molding and electropolymerization techniques. This procedure yields reproducible conducting polymer patterns with excellent feature periodicity, making them useful as diffraction gratings. The fabricated polymer gratings were characterized via tapping-mode atomic force microscopy. Spectroelectrochemistry was used to characterize the optical properties associated with various intrinsic PANI redox states. In accordance with the Kramers-Kronig relation for change-in-absorptivity and change-in-index-of-refraction, electrochemically induced changes in refractive index (detected via changes in diffraction efficiency) were observed to coincide with electrochemically-induced changes in the PANI electronic absorption spectrum. In addition, the higher oxidation states of PANI and the associated changes in refractive index proved accessible via chemical oxidation. Beyond the novelty of a chemically-switchable transmission grating, the response of this system points to the possibility of developing diffraction-based chemical sensing schemes.",
keywords = "Electrochemical sensors, Optical diffraction gratings, Polyaniline",
author = "Massari, {A. M.} and Stevenson, {K. J.} and Hupp, {Joseph T}",
year = "2001",
month = "3",
day = "16",
doi = "10.1016/S0022-0728(00)00323-5",
language = "English",
volume = "500",
pages = "185--191",
journal = "Journal of Electroanalytical Chemistry",
issn = "1572-6657",
publisher = "Elsevier Sequoia",
number = "1-2",

}

TY - JOUR

T1 - Development and application of patterned conducting polymer thin films as chemoresponsive and electrochemically responsive optical diffraction gratings

AU - Massari, A. M.

AU - Stevenson, K. J.

AU - Hupp, Joseph T

PY - 2001/3/16

Y1 - 2001/3/16

N2 - We describe the preparation of two-dimensionally patterned polyaniline (PANI) thin films via microtransfer molding and electropolymerization techniques. This procedure yields reproducible conducting polymer patterns with excellent feature periodicity, making them useful as diffraction gratings. The fabricated polymer gratings were characterized via tapping-mode atomic force microscopy. Spectroelectrochemistry was used to characterize the optical properties associated with various intrinsic PANI redox states. In accordance with the Kramers-Kronig relation for change-in-absorptivity and change-in-index-of-refraction, electrochemically induced changes in refractive index (detected via changes in diffraction efficiency) were observed to coincide with electrochemically-induced changes in the PANI electronic absorption spectrum. In addition, the higher oxidation states of PANI and the associated changes in refractive index proved accessible via chemical oxidation. Beyond the novelty of a chemically-switchable transmission grating, the response of this system points to the possibility of developing diffraction-based chemical sensing schemes.

AB - We describe the preparation of two-dimensionally patterned polyaniline (PANI) thin films via microtransfer molding and electropolymerization techniques. This procedure yields reproducible conducting polymer patterns with excellent feature periodicity, making them useful as diffraction gratings. The fabricated polymer gratings were characterized via tapping-mode atomic force microscopy. Spectroelectrochemistry was used to characterize the optical properties associated with various intrinsic PANI redox states. In accordance with the Kramers-Kronig relation for change-in-absorptivity and change-in-index-of-refraction, electrochemically induced changes in refractive index (detected via changes in diffraction efficiency) were observed to coincide with electrochemically-induced changes in the PANI electronic absorption spectrum. In addition, the higher oxidation states of PANI and the associated changes in refractive index proved accessible via chemical oxidation. Beyond the novelty of a chemically-switchable transmission grating, the response of this system points to the possibility of developing diffraction-based chemical sensing schemes.

KW - Electrochemical sensors

KW - Optical diffraction gratings

KW - Polyaniline

UR - http://www.scopus.com/inward/record.url?scp=0035277878&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035277878&partnerID=8YFLogxK

U2 - 10.1016/S0022-0728(00)00323-5

DO - 10.1016/S0022-0728(00)00323-5

M3 - Article

VL - 500

SP - 185

EP - 191

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

SN - 1572-6657

IS - 1-2

ER -