Abstract
Superhydrophobic particulate films were fabricated via deposition of raspberry-like fluorescent PS/CdTe/silica microspheres on clean glass substrates and surface modification. Particularly, the fluorescent microspheres were prepared by a kind of modified strategy, namely introducing poly (acrylic acid)-functionalized polystyrene microspheres and thiol-stabilized CdTe quantum dots into a hydrolysis reaction of tetraethoxysilane simultaneously. And through adjusting the reaction parameters, the polystyrene spheres with two particle sizes and three colors of CdTe quantum dots aqueous solution were obtained. Consequently, raspberry-like microspheres consist of polystyrene cores and the composite shells of CdTe quantum dots and silica. These microspheres possess a fluorescent characteristic and form a hierarchical dual roughness which was conductive to superhydrophobicity, and the hydrophobic tests also showed the contact angles of water droplets on the surface of the raspberry-like microspheres which were over 160° at room temperature.Electronic supplementary materialThe online version of this article (doi:10.1186/s11671-016-1325-9) contains supplementary material, which is available to authorized users.
Highlights
Considerable attention has been paid to the wettability of solid surfaces due to its importance in the deep understanding of interface chemistry and the precise manufacture of surface microstructures as well as its great potential for fundamental and industrial applications [1,2,3,4]
Some jobs have been reported on the synthesis of aqueous CdTe/silica composite particles in a hydrolysis reaction to maintain the fluorescent stability of aqueous CdTe quantum dots (QDs) [10, 11]
PS microspheres with two different particle sizes were synthesized via the boiling soap-free method which was reported by Gu et al [13], and three colors of CdTe QD aqueous solution were prepared according to the literature [14]
Summary
Considerable attention has been paid to the wettability of solid surfaces due to its importance in the deep understanding of interface chemistry and the precise manufacture of surface microstructures as well as its great potential for fundamental and industrial applications [1,2,3,4]. Because of the expensiveness, instability, and fragility of the related materials and end-product films, most of these cases have difficulty in practical applications [5]. Polymer/silica raspberry-like particles synthesized in hydrolysis reactions for large-scale superhydrophobic materials have aroused much interest [6,7,8,9]. Some jobs have been reported on the synthesis of aqueous CdTe/silica composite particles in a hydrolysis reaction to maintain the fluorescent stability of aqueous CdTe quantum dots (QDs) [10, 11]. After studying the methods for preparation of polymer/silica raspberry-like particles [9] and the synthesis of aqueous CdTe/silica composite particles [12],
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