The pH-dependent adhesion of nanoparticles to self-assembled monolayers on gold

J Bowen; Mayandithevar Manickam; S Evans; K Critchley; K Kendall; Jon Preece; James Bowen

doi:10.1016/j.tsf.2007.11.002

The pH-dependent adhesion of nanoparticles to self-assembled monolayers on gold

J Bowen, Mayandithevar Manickam, S Evans, K Critchley, K Kendall, Jon Preece, James Bowen

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10 Citations (Scopus)

Abstract

The effect of pH on the adhesion of silica and polystyrene latex nanoparticles, presenting hydroxyl and carboxylic acid surface chemistries respectively, to self-assembled monolayers (SAMs) has been investigated. The SAMs studied were 1-dodecanethiol, 11-mercaptoundecanoic acid and an original pyridine-terminated SAM. Adhesion of nanoparticles to the SAMs was found to decrease with increasing pH due to increased repulsive forces between surfaces, as a result of the deprotonation of surface moieties on the nanoparticles. A range of surface morphologies for the adsorbed nanoparticles was observed for the systems studied. (c) 2007 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	2987-2999
Number of pages	13
Journal	Thin Solid Films
Volume	516
Issue number	10
DOIs	https://doi.org/10.1016/j.tsf.2007.11.002
Publication status	Published - 12 Nov 2007

Keywords

pK(a)
self-assembled monolayer
nanoparticle
surface chemistry
adhesion

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10.1016/j.tsf.2007.11.002

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title = "The pH-dependent adhesion of nanoparticles to self-assembled monolayers on gold",

abstract = "The effect of pH on the adhesion of silica and polystyrene latex nanoparticles, presenting hydroxyl and carboxylic acid surface chemistries respectively, to self-assembled monolayers (SAMs) has been investigated. The SAMs studied were 1-dodecanethiol, 11-mercaptoundecanoic acid and an original pyridine-terminated SAM. Adhesion of nanoparticles to the SAMs was found to decrease with increasing pH due to increased repulsive forces between surfaces, as a result of the deprotonation of surface moieties on the nanoparticles. A range of surface morphologies for the adsorbed nanoparticles was observed for the systems studied. (c) 2007 Elsevier B.V. All rights reserved.",

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T1 - The pH-dependent adhesion of nanoparticles to self-assembled monolayers on gold

AU - Bowen, J

AU - Manickam, Mayandithevar

AU - Evans, S

AU - Critchley, K

AU - Kendall, K

AU - Preece, Jon

AU - Bowen, James

PY - 2007/11/12

Y1 - 2007/11/12

N2 - The effect of pH on the adhesion of silica and polystyrene latex nanoparticles, presenting hydroxyl and carboxylic acid surface chemistries respectively, to self-assembled monolayers (SAMs) has been investigated. The SAMs studied were 1-dodecanethiol, 11-mercaptoundecanoic acid and an original pyridine-terminated SAM. Adhesion of nanoparticles to the SAMs was found to decrease with increasing pH due to increased repulsive forces between surfaces, as a result of the deprotonation of surface moieties on the nanoparticles. A range of surface morphologies for the adsorbed nanoparticles was observed for the systems studied. (c) 2007 Elsevier B.V. All rights reserved.

AB - The effect of pH on the adhesion of silica and polystyrene latex nanoparticles, presenting hydroxyl and carboxylic acid surface chemistries respectively, to self-assembled monolayers (SAMs) has been investigated. The SAMs studied were 1-dodecanethiol, 11-mercaptoundecanoic acid and an original pyridine-terminated SAM. Adhesion of nanoparticles to the SAMs was found to decrease with increasing pH due to increased repulsive forces between surfaces, as a result of the deprotonation of surface moieties on the nanoparticles. A range of surface morphologies for the adsorbed nanoparticles was observed for the systems studied. (c) 2007 Elsevier B.V. All rights reserved.

KW - pK(a)

KW - self-assembled monolayer

KW - nanoparticle

KW - surface chemistry

KW - adhesion

U2 - 10.1016/j.tsf.2007.11.002

DO - 10.1016/j.tsf.2007.11.002

M3 - Article

VL - 516

SP - 2987

EP - 2999

JO - Thin Solid Films

JF - Thin Solid Films

IS - 10

ER -

The pH-dependent adhesion of nanoparticles to self-assembled monolayers on gold

Abstract

Keywords

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