title: A donor-nanotube paradigm for nonlinear optical materials.
abstract: Studies of the nonlinear electronic response of donor/acceptor substituted nanotubes suggest a behavior that is both surprising and qualitatively distinct from that in conventional conjugated organic species. We find that the carbon nanotubes serve as both electronic bridges and acceptors, leading to a donor-nanotube paradigm for the effective design of large first hyperpolarizabilities. We also find that tuning the donor orientation, relative to the nanotube, can significantly enhance the first hyperpolarizability.
authors.affiliation: Department of Chemistry, Duke University, Durham, North Carolina 27708, USA.
authors.forename: Dequan
authors.initials: D
authors.lastname: Xiao
authors.forename: Felipe A
authors.initials: FA
authors.lastname: Bulat
authors.forename: Weitao
authors.initials: W
authors.lastname: Yang
authors.forename: David N
authors.initials: DN
authors.lastname: Beratan