Stability of Alkanethiol Monolayers

The application of SAMs to anything other than fundamental studies requires the resultant modified surface to be stable. Self-assembled monolayers have good stability over a wide range of conditions. Variation in stability between different SAMs is a function of the chain-chain interactions as the gold-thiolate bond is the same. Therefore, any factor that increases the integrity of the SAM will ultimately also improve the stability of the SAM. Thermal stability of aliphatic alkanethiol SAMs has...

Introduction

Significant progress has been made in the science of carbon nanotubes (CNTs) since the publication of Iijima's milestone paper in 1991 1 . If there is one thing which has characterized fullerene and nanotube sciences, it is serendipity 2 . The discovery of buckminsterfullerene itself was a wonderful accident, and nanotubes were an unanticipated by-product of the bulk synthesis of C60. CNTs have captured the imagination of physicists, chemists, and materials scientists alike. Their intriguing...

Carbon Nanotubes And Their Preparation Methods

A carbon nanotube consists of one or more seamless cylindrical shells of graphitic sheets. The nanotube is typically closed at each end, according to Euler's theorem 22 , by the introduction of pentagons in the hexagonal network. A theoretical model of a CNT with two closed ends was simulated by Endo and Kroto 23 . However, an experimental observation of the tube with both ends closed has seldom been reported for two main reasons. One is that most CNTs, regardless of the synthesis methods (such...