title: Enhanced electrical conductivity in a substitutionally doped spiro-bis(phenalenyl)boron radical molecular solid.
abstract: We report the crystallization of a subsitutionally doped organic conductor based on a host lattice composed of spiro-bis(phenalenyl)boron radicals. Co-crystallization of solutions of spiro-bis(9-oxidophenalenone)boron radical [PLY(O,O)]2B mixed with selected amounts of spiro-bis(9-oxidophenalenone)beryllium [PLY(O,O)]2Be leads to the formation of a series of solid-state solutions of composition [PLY(O,O)]2B(1-x)Be(x). The dopant molecules [PLY(O,O)]2Be serve to introduce holes into the lattice of spins provided by the [PLY(O,O)]2B radicals and lead to a systematic increase in the conductivity while decreasing the activation energy of the conduction process and leaving the solid-state structure relatively unperturbed. While the energies of the hole sites are expected to be high, the results are consistent with the interpretation of the electronic structure of [PLY(O,O)]2B in terms of the resonating valence bond model.
authors.affiliation: Department of Chemistry and Chemical & Environmental Engineering, University of California , Riverside, California 92521, United States.
authors.forename: Sushanta K
authors.initials: SK
authors.lastname: Pal
authors.forename: Pradip
authors.initials: P
authors.lastname: Bag
authors.forename: Mikhail E
authors.initials: ME
authors.lastname: Itkis
authors.forename: Fook S
authors.initials: FS
authors.lastname: Tham
authors.forename: Robert C
authors.initials: RC
authors.lastname: Haddon