1 Ocak 2017 Dergi makalesi Açık Erişim

Yavuz, Adem; Sohrabnia, Nima; Yilmaz, Aysen; Danisman, M. Fatih

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    <subfield code="a">Carboranethiol self-assembled monolayers on metal surfaces have been shown to be very convenient systems for surface engineering. Here we have studied pure and mixed self-assembled monolayers (SAMs) of three different carboranethiol (CT) isomers on gold surfaces. The isomers were chosen with dipole moments pointing parallel to (m-1-carboranethiol, M1), out of (m-9-carboranethiol, M9) and into (1-carboranethiol, 01) the surface plane, in order to investigate the effect of dipole moment orientation on the film properties. In addition, influence of the substrate surface morphology on the film properties was also studied by using flame annealed (FA) and template stripped (TS) gold surfaces. Contact angle measurements indicate that in M1/M9 and M1/01 mixed SAMs, M1 is the dominant species on the surface even for low M1 ratio in the growth solution. Whereas for 01/M9 mixed SAMs no clear evidence could be observed indicating dominance of one of the species over the other one. Though contact angle values were lower and hysteresis values were higher for SAMs grown on TS gold surfaces, the trends in the behavior of the contact angles with changing mixing ratio were identical for SAMs grown on both substrates. Atomic force microscopy images of the SAMs on TS gold surfaces indicate that the films have similar morphological properties regardless of mixing ratio. (C) 2017 Elsevier B.V. All rights reserved.</subfield>
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    <subfield code="a">Yavuz, Adem</subfield>
    <subfield code="u">Middle East Tech Univ, Grad Sch Nat &amp; Appl Sci, Micro &amp; Nanotechnol Dept, TR-06800 Ankara, Turkey</subfield>
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    <subfield code="a">10.1016/j.apsusc.2017.03.294</subfield>
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    <subfield code="a">Mixed carboranethiol self-assembled monolayers on gold surfaces</subfield>
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    <subfield code="a">Danisman, M. Fatih</subfield>
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