Scanning Kelvin probe study of photolabile silane surface modification of indium tin oxide
Identifieur interne : 000575 ( Main/Repository ); précédent : 000574; suivant : 000576Scanning Kelvin probe study of photolabile silane surface modification of indium tin oxide
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Abstract
The scanning Kelvin nanoprobe (SKN) is an exquisitely sensitive device capable of detecting subtle changes in work function associated with alteration of surface chemistry and interfacial dipole. This instrument is highly versatile and has notably been recently used for (i) the investigation of biological interactions occurring at the interface of multiplexed microarrayed platforms and (ii) the characterization of high work function materials for application in molecular optoelectronics. Herein, we further implement the SKN to characterize, along with angle-resolved X-ray photoelectron spectroscopy and contact angle goniometry, the surface modification of indium tin oxide substrates with photopatternable silane adlayers. These molecular films are constructed in a straightforward and economical manner from alkyltrichlorosilane surface-modifying molecules that possess a distal, UV-photolabile o-nitrobenzyl moiety. Employing a photomask, we were able to selectively pattern regions of the photoreactive silane adlayer and confirm the corresponding changes in surface potential through contact potential difference measurements.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Scanning Kelvin probe study of photolabile silane surface modification of indium tin oxide</title><author><name>ELAINE YEE LING CHAK</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Biomaterials & Biomedical Engineering, University of Toronto, 164 College Street</s1><s2>Toronto, Ontario M5S 3G9</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Toronto, Ontario M5S 3G9</wicri:noRegion></affiliation></author><author><name sortKey="Pawlowska, Natalia Maria" uniqKey="Pawlowska N">Natalia Maria Pawlowska</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Chemistry, University of Toronto, 80 St. George Street</s1><s2>Toronto, Ontario M5S 3H6</s2><s3>CAN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Toronto, Ontario M5S 3H6</wicri:noRegion></affiliation></author><author><name sortKey="Blaszykowski, Christophe" uniqKey="Blaszykowski C">Christophe Blaszykowski</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Chemistry, University of Toronto, 80 St. George Street</s1><s2>Toronto, Ontario M5S 3H6</s2><s3>CAN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Toronto, Ontario M5S 3H6</wicri:noRegion></affiliation></author><author><name sortKey="Thompson, Michael" uniqKey="Thompson M">Michael Thompson</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Biomaterials & Biomedical Engineering, University of Toronto, 164 College Street</s1><s2>Toronto, Ontario M5S 3G9</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Toronto, Ontario M5S 3G9</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Chemistry, University of Toronto, 80 St. George Street</s1><s2>Toronto, Ontario M5S 3H6</s2><s3>CAN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Toronto, Ontario M5S 3H6</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="inist">13-0296741</idno><date when="2013">2013</date><idno type="stanalyst">PASCAL 13-0296741 INIST</idno><idno type="RBID">Pascal:13-0296741</idno><idno type="wicri:Area/Main/Corpus">000766</idno><idno type="wicri:Area/Main/Repository">000575</idno></publicationStmt><seriesStmt><idno type="ISSN">0142-2421</idno><title level="j" type="abbreviated">Surf. interface anal.</title><title level="j" type="main">Surface and interface analysis</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Contact potential</term><term>Indium</term><term>Inorganic compounds</term><term>Kelvin probe</term><term>Photolithography</term><term>Surface treatments</term><term>Transition element compounds</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Sonde Kelvin</term><term>Traitement surface</term><term>Indium</term><term>Potentiel contact</term><term>Photolithographie</term><term>In</term><term>Composé minéral</term><term>Composé de métal de transition</term></keywords><keywords scheme="Wicri" type="concept" xml:lang="fr"><term>Composé minéral</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The scanning Kelvin nanoprobe (SKN) is an exquisitely sensitive device capable of detecting subtle changes in work function associated with alteration of surface chemistry and interfacial dipole. This instrument is highly versatile and has notably been recently used for (i) the investigation of biological interactions occurring at the interface of multiplexed microarrayed platforms and (ii) the characterization of high work function materials for application in molecular optoelectronics. Herein, we further implement the SKN to characterize, along with angle-resolved X-ray photoelectron spectroscopy and contact angle goniometry, the surface modification of indium tin oxide substrates with photopatternable silane adlayers. These molecular films are constructed in a straightforward and economical manner from alkyltrichlorosilane surface-modifying molecules that possess a distal, UV-photolabile o-nitrobenzyl moiety. Employing a photomask, we were able to selectively pattern regions of the photoreactive silane adlayer and confirm the corresponding changes in surface potential through contact potential difference measurements.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0142-2421</s0></fA01><fA02 i1="01"><s0>SIANDQ</s0></fA02><fA03 i2="1"><s0>Surf. interface anal.</s0></fA03><fA05><s2>45</s2></fA05><fA06><s2>9</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Scanning Kelvin probe study of photolabile silane surface modification of indium tin oxide</s1></fA08><fA11 i1="01" i2="1"><s1>ELAINE YEE LING CHAK</s1></fA11><fA11 i1="02" i2="1"><s1>PAWLOWSKA (Natalia Maria)</s1></fA11><fA11 i1="03" i2="1"><s1>BLASZYKOWSKI (Christophe)</s1></fA11><fA11 i1="04" i2="1"><s1>THOMPSON (Michael)</s1></fA11><fA14 i1="01"><s1>Institute of Biomaterials & Biomedical Engineering, University of Toronto, 164 College Street</s1><s2>Toronto, Ontario M5S 3G9</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></fA14><fA14 i1="02"><s1>Department of Chemistry, University of Toronto, 80 St. George Street</s1><s2>Toronto, Ontario M5S 3H6</s2><s3>CAN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></fA14><fA20><s1>1347-1352</s1></fA20><fA21><s1>2013</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>18260</s2><s5>354000506584680070</s5></fA43><fA44><s0>0000</s0><s1>© 2013 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>19 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>13-0296741</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Surface and interface analysis</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>The scanning Kelvin nanoprobe (SKN) is an exquisitely sensitive device capable of detecting subtle changes in work function associated with alteration of surface chemistry and interfacial dipole. This instrument is highly versatile and has notably been recently used for (i) the investigation of biological interactions occurring at the interface of multiplexed microarrayed platforms and (ii) the characterization of high work function materials for application in molecular optoelectronics. Herein, we further implement the SKN to characterize, along with angle-resolved X-ray photoelectron spectroscopy and contact angle goniometry, the surface modification of indium tin oxide substrates with photopatternable silane adlayers. These molecular films are constructed in a straightforward and economical manner from alkyltrichlorosilane surface-modifying molecules that possess a distal, UV-photolabile o-nitrobenzyl moiety. 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