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Title: Preparation and characterization of ultrathin layers of substituted oligo- and poly(p-phenylene)s and mixed layers with octadecanethiol on gold and copper

Abstract

Substituted poly(p-phenylene)s were adsorbed from solution onto gold and copper and oligo(p-phenylene)s onto gold. The layers were investigated with IR spectroscopy at grazing incidence reflection, XPS, NEXAFS, ToF-SIMS, surface profilometry, AFM, SEM, optical microscopy, ellipsometry, and contact angle measurements to examine their formation and structure. The structure and the properties of the investigated layers depend not only on the chemical structure of the polymer but also on the type of substrate. On gold, the polymers form layers of 15--25 {angstrom} in thickness and the oligomers of ca. 5 {angstrom} in thickness. On copper, thick layers of up to 900 {angstrom} were also observed. The oligomers have a lower affinity to gold than the polymers. Mixed octadecanethiol-polymer layers were prepared by immersion of polymer-coated substrates in an octadecanethiol solution or by exposure of self-assembled monolayers of octadecanethiol to polymer solutions. The structure of the mixed layers depends on the sequence of the exposure of the two components and on the chemical structure of the polymer. In the mixed layers, structures that protrude above the surroundings were frequently detected at the surface.

Authors:
; ;  [1]
  1. and others
Publication Date:
Research Org.:
Inst. of Polymers, Zurich (CH)
OSTI Identifier:
20000003
Resource Type:
Journal Article
Journal Name:
Langmuir
Additional Journal Information:
Journal Volume: 15; Journal Issue: 19; Other Information: PBD: 14 Sep 1999; Journal ID: ISSN 0743-7463
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; OLIGOPHENYLENES; ORGANIC POLYMERS; THIOLS; THIN FILMS; MOLECULAR STRUCTURE; MICROSTRUCTURE

Citation Formats

Brunner, S., Caseri, W.R., and Suter, U.W. Preparation and characterization of ultrathin layers of substituted oligo- and poly(p-phenylene)s and mixed layers with octadecanethiol on gold and copper. United States: N. p., 1999. Web. doi:10.1021/la980748j.
Brunner, S., Caseri, W.R., & Suter, U.W. Preparation and characterization of ultrathin layers of substituted oligo- and poly(p-phenylene)s and mixed layers with octadecanethiol on gold and copper. United States. doi:10.1021/la980748j.
Brunner, S., Caseri, W.R., and Suter, U.W. Tue . "Preparation and characterization of ultrathin layers of substituted oligo- and poly(p-phenylene)s and mixed layers with octadecanethiol on gold and copper". United States. doi:10.1021/la980748j.
@article{osti_20000003,
title = {Preparation and characterization of ultrathin layers of substituted oligo- and poly(p-phenylene)s and mixed layers with octadecanethiol on gold and copper},
author = {Brunner, S. and Caseri, W.R. and Suter, U.W.},
abstractNote = {Substituted poly(p-phenylene)s were adsorbed from solution onto gold and copper and oligo(p-phenylene)s onto gold. The layers were investigated with IR spectroscopy at grazing incidence reflection, XPS, NEXAFS, ToF-SIMS, surface profilometry, AFM, SEM, optical microscopy, ellipsometry, and contact angle measurements to examine their formation and structure. The structure and the properties of the investigated layers depend not only on the chemical structure of the polymer but also on the type of substrate. On gold, the polymers form layers of 15--25 {angstrom} in thickness and the oligomers of ca. 5 {angstrom} in thickness. On copper, thick layers of up to 900 {angstrom} were also observed. The oligomers have a lower affinity to gold than the polymers. Mixed octadecanethiol-polymer layers were prepared by immersion of polymer-coated substrates in an octadecanethiol solution or by exposure of self-assembled monolayers of octadecanethiol to polymer solutions. The structure of the mixed layers depends on the sequence of the exposure of the two components and on the chemical structure of the polymer. In the mixed layers, structures that protrude above the surroundings were frequently detected at the surface.},
doi = {10.1021/la980748j},
journal = {Langmuir},
issn = {0743-7463},
number = 19,
volume = 15,
place = {United States},
year = {1999},
month = {9}
}