Molecular Systems by Brownian Assembly
There are basically four ways of assembling molecular nanosystems. The first is through consecutive linking of covalent bonds (as discussed in Chapter 2) and results in one huge molecule. The second involves hydrogen bonding, van der Waals bonding, electrostatic bonding, and non-covalent bonding (as discussed in Chapter 3) to assemble large systems of molecules. A third method involves forcing chemical bonding (Drexler, 1992) by a so-called mechanical assembly. In this case, the only known method involves using scanning tunneling microscopy, which was outlined in Chapter 1. A fourth method involves biotechnology to assemble the molecular components and systems. This method will be discussed later in this book. Clearly, early molecular nanotechnology must involve all four of these methods. In this chapter, we discuss systems built mainly from the first method and some small systems based on the second method. In the next chapter, we will discuss larger systems built from the second method.
KeywordsCrown Ether Molecular System Guest Molecule Supramolecular System Cyclodextrin Complex
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