GRAPHITIC POLYMER STRIPS WITH EDGE STATES

The Huckel band structure is analytically investigated for a family of arbitrary-width pi-network polymers which may be viewed as being cut from the graphite lattice. For wider strips a portion of two nearly no nbonding bands on either side of the Fermi energy are found to be loca lized to opposite edges of the strip. Novel consequences of these edge -localized band orbitals are considered and correlated to a simple res onating valence bond picture.