Stability of silane modifiers on alumina nanoporous membranes

Victor Szczepanski; Ivan Vlassiouk; Sergei Smirnov

doi:10.1016/j.memsci.2006.04.027

Stability of silane modifiers on alumina nanoporous membranes

Victor Szczepanski, Ivan Vlassiouk, Sergei Smirnov

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

52 Scopus citations

Abstract

Stability of silanes covalently bound to the surface of nanoporous alumina membranes was investigated and the reasons for variation have been identified as due to activation of Al-O-Si bond caused by local increase of pH from primary and secondary amines of the linker molecules. Transformation of amines into amides or passivation of alumina surface by as little as five atomic layers of deposited silica before silanization dramatically improve stability of immobilized molecules.

Original language	English
Pages (from-to)	587-591
Number of pages	5
Journal	Journal of Membrane Science
Volume	281
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2006.04.027
State	Published - Sep 15 2006
Externally published	Yes

Funding

We are grateful to the National Institute of Health (NIH SCORE GM08136) for partial financial support.

Funders	Funder number
National Institute of Health
National Institutes of Health	SCORE GM08136

Keywords

Local pH effect
Membrane modification
Nanoporous alumina
Silanization
Stability

Access to Document

10.1016/j.memsci.2006.04.027

Cite this

@article{0b1ed2606e5e44c08444369dc9fc0a0b,

title = "Stability of silane modifiers on alumina nanoporous membranes",

abstract = "Stability of silanes covalently bound to the surface of nanoporous alumina membranes was investigated and the reasons for variation have been identified as due to activation of Al-O-Si bond caused by local increase of pH from primary and secondary amines of the linker molecules. Transformation of amines into amides or passivation of alumina surface by as little as five atomic layers of deposited silica before silanization dramatically improve stability of immobilized molecules.",

keywords = "Local pH effect, Membrane modification, Nanoporous alumina, Silanization, Stability",

author = "Victor Szczepanski and Ivan Vlassiouk and Sergei Smirnov",

year = "2006",

month = sep,

day = "15",

doi = "10.1016/j.memsci.2006.04.027",

language = "English",

volume = "281",

pages = "587--591",

journal = "Journal of Membrane Science",

issn = "0376-7388",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Stability of silane modifiers on alumina nanoporous membranes

AU - Szczepanski, Victor

AU - Vlassiouk, Ivan

AU - Smirnov, Sergei

PY - 2006/9/15

Y1 - 2006/9/15

N2 - Stability of silanes covalently bound to the surface of nanoporous alumina membranes was investigated and the reasons for variation have been identified as due to activation of Al-O-Si bond caused by local increase of pH from primary and secondary amines of the linker molecules. Transformation of amines into amides or passivation of alumina surface by as little as five atomic layers of deposited silica before silanization dramatically improve stability of immobilized molecules.

AB - Stability of silanes covalently bound to the surface of nanoporous alumina membranes was investigated and the reasons for variation have been identified as due to activation of Al-O-Si bond caused by local increase of pH from primary and secondary amines of the linker molecules. Transformation of amines into amides or passivation of alumina surface by as little as five atomic layers of deposited silica before silanization dramatically improve stability of immobilized molecules.

KW - Local pH effect

KW - Membrane modification

KW - Nanoporous alumina

KW - Silanization

KW - Stability

UR - http://www.scopus.com/inward/record.url?scp=33746673212&partnerID=8YFLogxK

U2 - 10.1016/j.memsci.2006.04.027

DO - 10.1016/j.memsci.2006.04.027

M3 - Article

AN - SCOPUS:33746673212

SN - 0376-7388

VL - 281

SP - 587

EP - 591

JO - Journal of Membrane Science

JF - Journal of Membrane Science

IS - 1-2

ER -

Stability of silane modifiers on alumina nanoporous membranes

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this