An isolated silicon single chain end-grafted onto a substrate surface

Abstract

Articles you may be interested inStructural and orientation effects on electronic energy transfer between silicon quantum dots with dopants and with silver adsorbates

Polysilanes on surfaces

“…72,73 This led to the idea that polysilanyllithium acts as a reactive terminus to connect with bromide groups of alkyl chains on the substrate. 74,75 For this purpose, v-bromoalkyl-coated substrates were first prepared by ordinary silane-coupling reactions with the corresponding trialkoxysilane to the OH-group coated quartz. The bromoalkyl-coated substrate was immersed in a solution of polysilanyllithium formed by living anionic polymerization of the masked disilene, leading to a covalently tethered PSi on the modified substrate.…”

End-Grafted PolysilaneAn Approach to Single Polymer Science

“…We perform the end-graft reaction under water-and oxygen-free conditions by using laboratory-made glassware. 18 Tetrahydrofuran is usually used as the solvent. The initial solution of either masked disilene or polysilane is colorless.…”

Visualization of MacromoleculesA First Step to Manipulation and Controlled Response

“…Scanning probe microscopy, SPM, enables both visualization of single molecules − and probing of their properties. − In contrast to scanning tunneling microscopy (STM) that is limited to imaging of conductive materials, scanning force microscopy (SFM) became a versatile method for characterization of the microstructure of polymeric materials at the nanometer scale . In addition to the topological resolution, SFM can distinguish surface areas differing in local mechanical properties and composition, respectively. − Mechanical properties, such as viscoelasticity, friction, and adhesion, as well as long-range electrostatic and steric forces can be characterized on the scale of a few nanometers. − …”

“…[75][76][77] Scanning probe microscopy, SPM, enables both visualization of single molecules [78][79][80][81][82][83][84] and probing of their properties. [85][86][87][88][89][90][91][92][93][94] In contrast to scanning tunneling microscopy (STM) that is limited to imaging of conductive materials, 95 scanning force microscopy (SFM) became a versatile method for characterization of the microstructure of polymeric materials at the nanometer scale. 96 In addition to the topological resolution, SFM can distinguish surface areas differing in local mechanical properties and composition, respectively.…”