Sum frequency generation study on the molecular structures at the interfaces between quartz modified with amino-terminated self-assembled monolayer and electrolyte solutions of various pH and ionic strengths

T. Pajkossy, D. M. Kolb

Research output: Article

17 Citations (Scopus)

Abstract

The structures of water at the interfaces between a fused quartz surface modified by a self-assembled monolayer (SAM) of an amino-terminated silane molecule and electrolyte solutions of various pH and ionic strengths were investigated using sum frequency generation (SFG) vibrational spectroscopy. The structure of the interfacial water strongly depended on the pH of the solution. The effect of the electric double layer generated by the protonation of the amino groups in the SAM and unreacted silanol groups on the quartz substrate at low and high pH, respectively, is considered to be responsible for the pH-dependent SFG behavior.

Original languageEnglish
Pages (from-to)3057-3061
Number of pages5
JournalElectrochimica Acta
Volume46
Issue number20-21
DOIs
Publication statusPublished - júl. 30 2001

Fingerprint

Quartz
Self assembled monolayers
Ionic strength
Molecular structure
Electrolytes
Silanes
Vibrational spectroscopy
Water
Protonation
Molecules
Substrates
silanol

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

Cite this

@article{8af7fa6ad0e84b838e08d08c9f99ddc0,
title = "Sum frequency generation study on the molecular structures at the interfaces between quartz modified with amino-terminated self-assembled monolayer and electrolyte solutions of various pH and ionic strengths",
abstract = "The structures of water at the interfaces between a fused quartz surface modified by a self-assembled monolayer (SAM) of an amino-terminated silane molecule and electrolyte solutions of various pH and ionic strengths were investigated using sum frequency generation (SFG) vibrational spectroscopy. The structure of the interfacial water strongly depended on the pH of the solution. The effect of the electric double layer generated by the protonation of the amino groups in the SAM and unreacted silanol groups on the quartz substrate at low and high pH, respectively, is considered to be responsible for the pH-dependent SFG behavior.",
keywords = "Interfacial molecular structure, Self-assembled monolayer (SAM), Solid-liquid interface, Sum frequency generation (SFG), Water structure",
author = "T. Pajkossy and Kolb, {D. M.}",
year = "2001",
month = "7",
day = "30",
doi = "10.1016/S0013-4686(01)00595-3",
language = "English",
volume = "46",
pages = "3057--3061",
journal = "Electrochimica Acta",
issn = "0013-4686",
publisher = "Elsevier Limited",
number = "20-21",

}

TY - JOUR

T1 - Sum frequency generation study on the molecular structures at the interfaces between quartz modified with amino-terminated self-assembled monolayer and electrolyte solutions of various pH and ionic strengths

AU - Pajkossy, T.

AU - Kolb, D. M.

PY - 2001/7/30

Y1 - 2001/7/30

N2 - The structures of water at the interfaces between a fused quartz surface modified by a self-assembled monolayer (SAM) of an amino-terminated silane molecule and electrolyte solutions of various pH and ionic strengths were investigated using sum frequency generation (SFG) vibrational spectroscopy. The structure of the interfacial water strongly depended on the pH of the solution. The effect of the electric double layer generated by the protonation of the amino groups in the SAM and unreacted silanol groups on the quartz substrate at low and high pH, respectively, is considered to be responsible for the pH-dependent SFG behavior.

AB - The structures of water at the interfaces between a fused quartz surface modified by a self-assembled monolayer (SAM) of an amino-terminated silane molecule and electrolyte solutions of various pH and ionic strengths were investigated using sum frequency generation (SFG) vibrational spectroscopy. The structure of the interfacial water strongly depended on the pH of the solution. The effect of the electric double layer generated by the protonation of the amino groups in the SAM and unreacted silanol groups on the quartz substrate at low and high pH, respectively, is considered to be responsible for the pH-dependent SFG behavior.

KW - Interfacial molecular structure

KW - Self-assembled monolayer (SAM)

KW - Solid-liquid interface

KW - Sum frequency generation (SFG)

KW - Water structure

UR - http://www.scopus.com/inward/record.url?scp=0035973852&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035973852&partnerID=8YFLogxK

U2 - 10.1016/S0013-4686(01)00595-3

DO - 10.1016/S0013-4686(01)00595-3

M3 - Article

AN - SCOPUS:0035973852

VL - 46

SP - 3057

EP - 3061

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

IS - 20-21

ER -