Direct electrochemical nanopatterning of polycarbazole monomer and precursor polymer films: Ambient formation of thermally stable conducting nanopatterns

Subbiah Jegadesan, Swaminathan Sindhu, Rigoberto C. Advincula, Suresh Valiyaveettil

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

The direct nanopatterning of polycarbazole on ultrathin films of a "precursor polymer" and monomer under ambient conditions is reported. In contrast to previous reports on electrochemical dip-pen nanolithography using monomer ink or electrolyte-saturated films in electrostatic nanolithography, these features were directly patterned on spin-cast films of carbazole monomer and poly(vinylcarbazole) (PVK) under room temperature and humidity conditions. Using a voltage-biased atomic force microscope (AFM) tip, electric-field-induced polymerization and cross-linking occurred with nanopatterning in these films. Different parameters, including writing speed and bias voltages, were studied to demonstrate line width and patterning geometry control. The conducting property (current - voltage (I - V) curves) of these nanopatterns was also investigated using a conducting-AFM (C-AFM) setup, and the thermal stability of the patterns was evaluated by annealing the polymer/monomer film above the glass transition (T g) temperature of the precursor polymer. To the best of our knowledge, this is the first report in which thermally stable conducting nanopatterns were drawn directly on monomer or polymer film substrates using an electrochemical nanolithography technique under ambient conditions.

Original languageEnglish
Pages (from-to)780-786
Number of pages7
JournalLangmuir
Volume22
Issue number2
DOIs
Publication statusPublished - 2006 Jan 17
Externally publishedYes

Fingerprint

Polymer films
Nanolithography
monomers
Monomers
conduction
polymers
Polymers
Microscopes
electric potential
microscopes
Ultrathin films
Electric potential
pens
Bias voltage
Ink
carbazoles
Linewidth
Electrolytes
inks
Glass transition

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Direct electrochemical nanopatterning of polycarbazole monomer and precursor polymer films : Ambient formation of thermally stable conducting nanopatterns. / Jegadesan, Subbiah; Sindhu, Swaminathan; Advincula, Rigoberto C.; Valiyaveettil, Suresh.

In: Langmuir, Vol. 22, No. 2, 17.01.2006, p. 780-786.

Research output: Contribution to journalArticle

Jegadesan, Subbiah ; Sindhu, Swaminathan ; Advincula, Rigoberto C. ; Valiyaveettil, Suresh. / Direct electrochemical nanopatterning of polycarbazole monomer and precursor polymer films : Ambient formation of thermally stable conducting nanopatterns. In: Langmuir. 2006 ; Vol. 22, No. 2. pp. 780-786.
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