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 language | English |
|---|---|
| Pages (from-to) | 3704-3707 |
| Number of pages | 4 |
| Journal | Langmuir |
| Volume | 18 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Apr 30 2002 |
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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 journal › Article
}
TY - JOUR
T1 - Nanoscale consecutive self-assembly of thin-film molecular materials for electrooptic switching. Chemical streamlining and ultrahigh response chromophores
AU - van der Boom, Milko
AU - Zhu, Peiwang
AU - Evmenenko, Guennadi
AU - Malinsky, Joshua E.
AU - Lin, Wenbin
AU - Dutta, Pulak
AU - Marks, Tobin J
PY - 2002/4/30
Y1 - 2002/4/30
N2 - 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.
AB - 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.
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U2 - 10.1021/la011561m
DO - 10.1021/la011561m
M3 - Article
AN - SCOPUS:0037198225
VL - 18
SP - 3704
EP - 3707
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 9
ER -