Photopolymerization of two-component monolayers: mixtures of bis[2-(n-hexadecanoyloxy)ethyl]methyl(4-vinylbenzyl) ammonium chloride and dioctadecyldimethylammonium bromide

The electrochemical oxidation of pyrrole-terminated, self-assembled alkanethiol monolayers on Au surfaces in dry electrolyte media (<0.005% H2O) results in tethered poly(N-alkylpyrroles) of varying monomer repeat lengths. After pristine (monomeric) monolayers of 10-(N-pyrrolyl)decane-1-thiol (1), 7-(N-pyrrolyl)heptane-1-thiol (2), and 6-(N-pyrrolyl)hexane-1-thiol (3) on Au have been oxidized in nonaqueous electrolyte media, electrochemistry characteristic of poly(N-alkylpyrroles) is observed. Reflection−absorption infrared spectra of the oxidized monolayers exhibit aromatic C−H out-of-plane deformation bands between 700 and 800 cm-1 that can be used to determine the effective conjugation length of the poly(N-alkylpyrroles) produced. The number of monomer repeat units in the backbone ranges from 2 to ∼20 and depends on the oxidation potential applied to the monomeric monolayers. In comparison to the monomeric monolayers, the electrochemically polymerized monolayers are demonstrated to be more stable with respect to exchange by a redox-labeled alkanethiol.

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Photopolymerization of two-component monolayers: mixtures of bis[2-(n-hexadecanoyloxy)ethyl]methyl(4-vinylbenzyl) ammonium chloride and dioctadecyldimethylammonium bromide

Cited by 5 publications

References 15 publications

Recent studies on functional ultrathin polymer films prepared by the Langmuir-Blodgett technique

Recent studies on functional ultrathin polymer films prepared by the Langmuir-Blodgett technique

Stability of dimethyldioctadecylammonium bromide Langmuir-Blodgett films on mica in aqueous salt solutions—implications for surface force measurements

Tethered Monolayers of Poly((N-pyrrolyl)alkanethiol) on Au

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