Evolution of Electronic Structure from Single Atom to Polymer Chain

Evolution of Electronic Structure from Single Atom to Polymer Chain 

When these chains come together to form a polymer solid with weak interchain electronic coupling, the valence and conduction bands are stabilized to have smaller IP and larger Ag by the screening effect as in the case of the molecular solid 

In tight binding approximation, the energy band width is given by 4t (t transfer integral describing interatomic electronic interaction). 

When polymer chains are assembled by weak interchain interaction to form a polymer solid, the electronic structure is modified as described in Section 3.2.2. 

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Figure 3.4 Schematic evolution of electronic structure from single atom to polymer chain. Conduction band (CB unoccupied band)) and valence band (VB occupied band) are shown.

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