Fluoroalkylsilanes with Embedded Functional Groups as Building Blocks for Environmentally Safer Self-Assembled Monolayers

被引：12

作者：

Ballarin, Barbara ^{[1
,2
]}

Barreca, Davide ^{[3
,4
]}

Cassani, Maria Cristina ^{[1
,2
]}

Carraro, Giorgio ^{[5
,6
]}

Maccato, Chiara ^{[5
,6
]}

Mignani, Adriana ^{[7
]}

Lazzari, Dario ^{[8
]}

Bertola, Maurizio ^{[8
]}

机构：

[1] Univ Bologna, Dept Ind Chem Toso Montanari, UdR INSTM Bologna, I-40136 Bologna, Italy

[2] Univ Bologna, Ctr Ind Res Adv Applicat Mech Engn & Mat Technol, Alma Mater Studiorum, I-40136 Bologna, Italy

[3] Univ Padua, CNR IENI, I-35131 Padua, Italy

[4] Univ Padua, INSTM, Dept Chem Sci, I-35131 Padua, Italy

[5] Univ Padua, Dept Chem Sci, I-35131 Padua, Italy

[6] INSTM, I-35131 Padua, Italy

[7] Univ Bologna, Ctr Ind Res Adv Applicat Mech Engn & Mat Technol, I-40136 Bologna, Italy

[8] Miteni SpA, I-36070 Vicenza, Italy

来源：

LANGMUIR | 2015年 / 31卷 / 25期

关键词：

SILICA NANOPARTICLES; SURFACES; COATINGS; PHASE;

D O I：

10.1021/acs.langmuir.5b01416

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The fabrication of silane-based fluorinated self-assembled monolayers (FSAMs) on indium tin oxide (ITO, a transparent electrode) was carried out making use of the following fluoroalkylsilanes (FAS): 2,2,3,3,4,4,5,5,6,6,6-undecafluoro-N-[3-(trimethoxysilyl]propyl]hexanamide (1; R-F = C5F11) and 1,1,2,2,3,3,4,4,4-nonafluoro-N-[3-(trimethoxysilyl)-propyl]butane-1-sulfonamide (2; R-F = C4F9), containing an embedded amide and a sulfonamide group, respectively, between the short perfluoroalkyl chain (R-F with C < 6) and the syloxanic moiety. The obtained FSAM-modified/ITO systems were characterized by X-ray photoelectron spectroscopy (XPS), contact angle (CA), surface energy measurements, and electrochemical impedance spectroscopy (EIS) and compared to ITO modified with a 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluor-ooctyltriethoxysilane (3; R-F = C6F13), with the perfluoroalkyl group linked to the syloxanic moiety through a simple hydrocarbon chain. The results obtained show that the presence of the -NHCO- and -NHSO2- groups have a different mode of action and, with the former, despite the short perfluoroalkyl chain, the ITO-1 system presents a CA (Theta(water) = 113.5 degrees) and surface energy (gamma(1) = 14.0 mJ m(-2)) typical of amphiphobic materials. These properties can be exploited in a variety of applications, such as self-cleaning, anti-fouling, and anti-fingerprint coatings, and in advanced microelectronic components.

引用

页码：6988 / 6994

页数：7

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