Nanoscale consecutive self-assembly of thin-film molecular materials for electrooptic switching. Chemical streamlining and ultrahigh response chromophores

Milko van der Boom, Peiwang Zhu, Guennadi Evmenenko, Joshua E. Malinsky, Wenbin Lin, Pulak Dutta, Tobin J Marks

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

A broadly applicable approach to formation of self-assembled organic electrooptic superlattices for high-speed switching is reported. This two-step "one-pot" method involves (i) layer-by-layer covalent self-assembly of intrinsically acentric monolayers of a new high-hyperpolarizability donor-acceptor aminophenylbenzothiazolpyridinium chromophore (β(0.65 eV)calcd = 1620 × 10-30 cm5 esu-1) on hydrophilic substrates and (ii) in-situ chromophore deprotection concurrent with self-limiting "capping"/planarization of each chromophore layer with octachlorotrisiloxane. The resulting organic films are characterized using a combination of physicochemical methodolgies including synchrotron X-ray specular reflectivity, angle-dependent polarized second harmonic generation spectroscopy, optical spectrometry, X-ray photoelectron spectroscopy, and advancing contact angle measurements. The superlattices exhibit very large second-order responses, χ(2) ≈ 370 pm/V, and a large macroscopic electrooptic coefficient, r33 ≈ 120 pm/V, is estimated at λ0 = 1064 nm.

Original languageEnglish
Pages (from-to)3704-3707
Number of pages4
JournalLangmuir
Volume18
Issue number9
DOIs
Publication statusPublished - Apr 30 2002

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streamlining
Chromophores
Electrooptical effects
Self assembly
chromophores
electro-optics
self assembly
Superlattices
Thin films
superlattices
thin films
Angle measurement
Harmonic generation
Synchrotrons
Spectrometry
x ray spectroscopy
Contact angle
Monolayers
harmonic generations
synchrotrons

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Nanoscale consecutive self-assembly of thin-film molecular materials for electrooptic switching. Chemical streamlining and ultrahigh response chromophores. / van der Boom, Milko; Zhu, Peiwang; Evmenenko, Guennadi; Malinsky, Joshua E.; Lin, Wenbin; Dutta, Pulak; Marks, Tobin J.

In: Langmuir, Vol. 18, No. 9, 30.04.2002, p. 3704-3707.

Research output: Contribution to journalArticle

van der Boom, Milko ; Zhu, Peiwang ; Evmenenko, Guennadi ; Malinsky, Joshua E. ; Lin, Wenbin ; Dutta, Pulak ; Marks, Tobin J. / Nanoscale consecutive self-assembly of thin-film molecular materials for electrooptic switching. Chemical streamlining and ultrahigh response chromophores. In: Langmuir. 2002 ; Vol. 18, No. 9. pp. 3704-3707.
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