Cationic self-assembled monolayers composed of gemini-structured sulfur compounds on gold

A new approach to control ionic functions on surfaces

Shinobu Yokokawa, Masahiko Hara, Kaoru Tamada, Eisuke Ito

Research output: Contribution to journalArticle

Abstract

Cationic self-assembled monolayers (SAMs) composed of quaternary ammonium (QA) sulfur derivatives have been synthesized to control a position and a distance between charged head groups on gold substrates. Three molecules bearing resembling molecular structures, "gemini"-structured didodecyl dithiol (HS-gQA-SH), didodecyl disulfide (QA-SS-QA), and gemini-structured didodecyl disulfide (gQA-SS-gQA), were utilized in this study, and the formation and structure of the SAMs were characterized by surface plasmon resonance spectroscopy (SPR).

Original languageEnglish
JournalMolecular Crystals and Liquid Crystals
Volume407
DOIs
Publication statusPublished - Jan 1 2003
Externally publishedYes

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Sulfur Compounds
sulfur compounds
Sulfur compounds
disulfides
Self assembled monolayers
Ammonium Compounds
Gold
Bearings (structural)
gold
Surface plasmon resonance
surface plasmon resonance
thiols
Molecular structure
molecular structure
sulfur
Sulfur
Spectroscopy
Derivatives
Molecules
Substrates

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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AU - Yokokawa, Shinobu

AU - Hara, Masahiko

AU - Tamada, Kaoru

AU - Ito, Eisuke

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AB - Cationic self-assembled monolayers (SAMs) composed of quaternary ammonium (QA) sulfur derivatives have been synthesized to control a position and a distance between charged head groups on gold substrates. Three molecules bearing resembling molecular structures, "gemini"-structured didodecyl dithiol (HS-gQA-SH), didodecyl disulfide (QA-SS-QA), and gemini-structured didodecyl disulfide (gQA-SS-gQA), were utilized in this study, and the formation and structure of the SAMs were characterized by surface plasmon resonance spectroscopy (SPR).

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