Anti-fingerprint properties of non-fluorinated organosiloxane self-assembled monolayer-coated glass surfaces

A bioinspired approach to produce parahydrophobic properties using PEDOP conducting polymers with branched alkyl chains

“…Controlling the surface wettability is of a fundamental interest in an extremely large range of applications [1] such as in cookware coatings [2], anti-fingerprint screen protectors [3], microfluidic systems [4], gas and liquid separation membranes [5] or the anti-bioadhesion [6]. The wettability of "smooth" surfaces is determined by the Young equation, which gives the apparent contact angle of a smooth surface (θ Y ) as a function of three surface tensions [7].…”

The Synthesis and Morphology of a Perfluoroalkyl Oligosiloxane@SiO2 Resin and Its Performance in Anti-Fingerprint Coating

“…Meanwhile, the more fluorinated groups introduced in the oligosiloxane, the stronger the hydro-and oleo-phobic properties of the intermediate and target FSi@SiO 2 . In view of this, the mole ratio of PFDE/PFOE:VTES:D 4 H was designed to be 3:1:1 in reaction. To ensure that the Si-H residue from D 4 H was completely consumed in the synthesis of FVPS, slightly excessive PFDE/PFOE and VTES were replenished before the end of hydrosilylation.…”

“…Vinyl triethoxysilane (VTES) was supplied by Qufu Chenguang Chemical Co., Qufu, China. 1,3,5,7-tetramethylcyclotetrasiloxane (D 4 H ) and methyl-silicone (MQ) resin were provided by China National Bluestar (Group) Co., Beijing, China. Platinum complex catalyst (KP22) and trifluoroethanol (TFE) were obtained from Shanghai Zhongzixing Chemical Co.…”

“…In a three-neck flask equipped with a thermometer, a mechanical stirrer, and a reflux condenser, PFDE or PFOE, VTES, and D 4 H were added in a mole ratio of PFDE/PFOE:VTES:D 4 H of about 3:1:1. After being stirred for 10 min, the mixture was heated to 80 • C under nitrogen protection, and then a catalytic amount of platinum complex catalyst KP22 was added.…”

“…Once deposited on a transparent surface, such as the touchscreen of a mobile phone, iPad, or pocket computer, it decreases optical transmittance and hinders visibility [2,3]. Therefore, a study on how to keep touchscreens free of fingerprints and make them easier to clean should probably focus on developing transparent hydrophobic and oleophobic coatings; this has become an urgent and primary problem that needs to be solved [4], especially as electronic devices and wearable electronics have developed rapidly. Thus, the demand for anti-fingerprint materials is expected to increase greatly in the next few years [5].…”