Adhesion forces in AFM of redox responsive polymer grafts: Effects of tip hydrophilicity

Xueling Feng; B.D. Kieviet; Jing Song; Peter Manfred Schön; Gyula J. Vancso

doi:10.1016/j.apsusc.2013.11.087

Adhesion forces in AFM of redox responsive polymer grafts: Effects of tip hydrophilicity

Xueling Feng, B.D. Kieviet, Jing Song, Peter Manfred Schön, Gyula J. Vancso

Research output: Contribution to journal › Article › Academic › peer-review

13 Citations (Scopus)

8 Downloads (Pure)

Abstract

The adherence between silicon nitride AFM tips and redox-active poly(ferrocenylsilanes) (PFS) grafts ongold was investigated by electrochemical AFM force spectroscopy. Before the adhesion measurementssilicon nitride AFM probes were cleaned with organic solvents (acetone and ethanol) or piranha solution.Interestingly, these different AFM tip cleaning procedures drastically affected the observed adhesionforces. Water contact angle measurements on the corresponding AFM probe chips showed that piranhatreatment resulted in a significant increase of AFM probe chip surface hydrophilicity compared to theorganic solvent treatment. Obviously this hydrophilicity change caused drastic, even opposite changesin the tip-PFS adhesive force measurement upon electrode potential change to reversibly oxidize andreduce the PFS grafts. Our findings are of pivotal importance for AFM tip adhesion measurements utilizingstandard silicon nitride AFM tips. Probe hydrophilicity must be carefully taken into consideration and controlled.

Original language	English
Pages (from-to)	107-110
Number of pages	4
Journal	Applied surface science
Volume	292
DOIs	https://doi.org/10.1016/j.apsusc.2013.11.087
Publication status	Published - 2014

Keywords

IR-92621
METIS-306444

Access to Document

10.1016/j.apsusc.2013.11.087

Cite this

@article{f343d6a8834c464a90a8065d4f3480bf,

title = "Adhesion forces in AFM of redox responsive polymer grafts: Effects of tip hydrophilicity",

abstract = "The adherence between silicon nitride AFM tips and redox-active poly(ferrocenylsilanes) (PFS) grafts ongold was investigated by electrochemical AFM force spectroscopy. Before the adhesion measurementssilicon nitride AFM probes were cleaned with organic solvents (acetone and ethanol) or piranha solution.Interestingly, these different AFM tip cleaning procedures drastically affected the observed adhesionforces. Water contact angle measurements on the corresponding AFM probe chips showed that piranhatreatment resulted in a significant increase of AFM probe chip surface hydrophilicity compared to theorganic solvent treatment. Obviously this hydrophilicity change caused drastic, even opposite changesin the tip-PFS adhesive force measurement upon electrode potential change to reversibly oxidize andreduce the PFS grafts. Our findings are of pivotal importance for AFM tip adhesion measurements utilizingstandard silicon nitride AFM tips. Probe hydrophilicity must be carefully taken into consideration and controlled.",

keywords = "IR-92621, METIS-306444",

author = "Xueling Feng and B.D. Kieviet and Jing Song and Sch{\"o}n, {Peter Manfred} and Vancso, {Gyula J.}",

year = "2014",

doi = "10.1016/j.apsusc.2013.11.087",

language = "English",

volume = "292",

pages = "107--110",

journal = "Applied surface science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Adhesion forces in AFM of redox responsive polymer grafts: Effects of tip hydrophilicity

AU - Feng, Xueling

AU - Kieviet, B.D.

AU - Song, Jing

AU - Schön, Peter Manfred

AU - Vancso, Gyula J.

PY - 2014

Y1 - 2014

N2 - The adherence between silicon nitride AFM tips and redox-active poly(ferrocenylsilanes) (PFS) grafts ongold was investigated by electrochemical AFM force spectroscopy. Before the adhesion measurementssilicon nitride AFM probes were cleaned with organic solvents (acetone and ethanol) or piranha solution.Interestingly, these different AFM tip cleaning procedures drastically affected the observed adhesionforces. Water contact angle measurements on the corresponding AFM probe chips showed that piranhatreatment resulted in a significant increase of AFM probe chip surface hydrophilicity compared to theorganic solvent treatment. Obviously this hydrophilicity change caused drastic, even opposite changesin the tip-PFS adhesive force measurement upon electrode potential change to reversibly oxidize andreduce the PFS grafts. Our findings are of pivotal importance for AFM tip adhesion measurements utilizingstandard silicon nitride AFM tips. Probe hydrophilicity must be carefully taken into consideration and controlled.

AB - The adherence between silicon nitride AFM tips and redox-active poly(ferrocenylsilanes) (PFS) grafts ongold was investigated by electrochemical AFM force spectroscopy. Before the adhesion measurementssilicon nitride AFM probes were cleaned with organic solvents (acetone and ethanol) or piranha solution.Interestingly, these different AFM tip cleaning procedures drastically affected the observed adhesionforces. Water contact angle measurements on the corresponding AFM probe chips showed that piranhatreatment resulted in a significant increase of AFM probe chip surface hydrophilicity compared to theorganic solvent treatment. Obviously this hydrophilicity change caused drastic, even opposite changesin the tip-PFS adhesive force measurement upon electrode potential change to reversibly oxidize andreduce the PFS grafts. Our findings are of pivotal importance for AFM tip adhesion measurements utilizingstandard silicon nitride AFM tips. Probe hydrophilicity must be carefully taken into consideration and controlled.

KW - IR-92621

KW - METIS-306444

U2 - 10.1016/j.apsusc.2013.11.087

DO - 10.1016/j.apsusc.2013.11.087

M3 - Article

SN - 0169-4332

VL - 292

SP - 107

EP - 110

JO - Applied surface science

JF - Applied surface science

ER -

Adhesion forces in AFM of redox responsive polymer grafts: Effects of tip hydrophilicity

Abstract

Keywords

Access to Document

Fingerprint

Cite this