Close-packed silane nanodot arrays by capillary nanostamping coupled with heterocyclic silane ring opening

Abstract

We report the parallel generation of close-packed ordered silane nanodot arrays with nanodot diameters of few 100 nm and nearest-neighbor distances in the one-micron range.

Phenolic Resin Dual-Use Stamps for Capillary Stamping and Decal Transfer Printing

“…46 It should finally be noted that contrast variations apparent in the fluorescence contrast profiles displayed in Figure 2c may result from the fact that the lines, along which we took the fluorescence contrast profiles, do not always cut through the fluorescence maxima of the considered microdots. The evaluation of the 10 TIRFM images (Figures 2a and S7) of RhB microdot arrays, which were successively stamped without replenishment of ink, indicates thatsimilar to the case of mesoporous silica stamps 47 the porous phenolic resin stamps contain continuous pore systems. These continuous pore systems can be soaked with ink and act as an ink reservoir during the performance of successive stamping steps.…”

“…14 The Ti-coated QCM resonators were exposed to air under ambient conditions (24 °C, 50% relative humidity) for 24 h to form ≈2 nm thick TiO 2 layers on the Ti coatings following a procedure reported previously. 47 The TiO 2 /Ti-coated QCM resonators and the phenolic resin stamps were treated with oxygen plasma (Diener electronic, Ebhausen, Germany) at 100 W for 5 min. The phenolic resin stamps were then cut into pieces extending 0.5 cm × 0.5 cm and glued onto cylindrical stamp holders with a mass of 40 g using double-sided adhesive tape in such a way that the nanorods of the phenolic resin stamps were exposed.…”

“…TIRFM Microscopy. TIRF microscopy was performed under ambient conditions following procedures reported by Philippi et al 47 using an inverted microscope Olympus IX71 equipped with a 4-Line TIRF condenser Olympus TIRF 4-Line. The microscopic images were acquired using a 150-fold oil immersion objective (PLAPON 60× TIRF, NA 1.42) combined with a 561 nm diode-pumped solidstate laser (Cobolt Jive 561), a TIRF pentaband polychroic beamsplitter (Semrock zt405/488/561/640/730rpc), and a pentabandpass emitter (BrightLine HC 440/521/607/694/809).…”

“…Gold-coated QCM resonators (5 MHz AT-cut quartz with an overlap area of 0.196 cm 2 and a thickness of ≈0.333 mm supplied by Quarztechnik Daun GmbH) were sputter-coated with a ≈7 nm thick Ti layer using a Balzers BAE 120 evaporator applying recipes reported elsewhere . The Ti-coated QCM resonators were exposed to air under ambient conditions (24 °C, 50% relative humidity) for 24 h to form ≈2 nm thick TiO 2 layers on the Ti coatings following a procedure reported previously . The TiO 2 /Ti-coated QCM resonators and the phenolic resin stamps were treated with oxygen plasma (Diener electronic, Ebhausen, Germany) at 100 W for 5 min.…”

Single-Molecule Orthogonal Double-Click Chemistry—Inorganic to Organic Nanostructure Transition

“…TSCP and ASCP heteroatom cyclics have proven capable of rapidly converting hydroxylated surfaces to functionalized surfaces in inorganic click reactions. , Single-click reactions have been shown using this concept. , In this work, we demonstrate that the use of these reagents can be extended to “simultaneous double-clicking” when both inorganic and organic substrates are present at the onset of the reaction. The simultaneous double-click depends on a first click with an inorganic substrate, which results in the reveal of a cryptic mercaptan or secondary amine group, which can then participate in a second click with an appropriate organic substrate.…”