title: Aminosilane micropatterns on hydroxyl-terminated substrates: fabrication and applications.
abstract: The technique to pattern aminosilanes on hydroxyl-terminated substrates will open up extensive applications in many fields. There are some existing methods to pattern aminosilanes, in particular, (3-aminopropyl)triethoxysilane (APTES) on SiO(2) and glass substrates through indirect routes. However, few reports focus on the direct patterning of APTES by microcontact printing (microCP), due to the volatility of "inks" which consist of APTES and organic solvents. This report shows that high-quality APTES patterns on hydroxyl-terminated substrates can be directly obtained by microCP using an APTES aqueous solution as "ink". Gold nanoparticles (Au NPs) have been used to verify the presence and quality of APTES patterns on which they are selectively adsorbed. Thus-obtained Au NP patterns can serve as templates for the growth of ZnO nanostructures. Lectins are also successfully immobilized on the APTES patterns, with glutaraldehyde as linker. We believe that our method will serve as a general approach and find a wide range of applications in the fabrication of patterns and devices.
authors: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
authors: Hai
authors: H
authors: Li
authors: Juan
authors: J
authors: Zhang
authors: Xiaozhu
authors: X
authors: Zhou
authors: Gang
authors: G
authors: Lu
authors: Zongyou
authors: Z
authors: Yin
authors: Gongping
authors: G
authors: Li
authors: Tom
authors: T
authors: Wu
authors: Freddy
authors: F
authors: Boey
authors: Subbu S
authors: SS
authors: Venkatraman
authors: Hua
authors: H
authors: Zhang
mesh_terms: D006046:Gold / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D011437:Propylamines; D012821:Silanes / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry; D015034:Zinc Oxide / Q000737:chemistry
chemical_list: D011437:Propylamines; D012821:Silanes; D006046:Gold; D012822:Silicon Dioxide; C477625:amino-propyl-triethoxysilane; D015034:Zinc Oxide