Theoretical analysis of complementary molecular memory devices Academic Article

abstract

• The electrical behavior of -conjugated oligo(phenyleneethynylene) systems functioning as memory devices is studied using quantum chemistry methods, including density functional and Green function formalisms combined in a fully self-consistent manner. Electron charge alters a molecule impedance characteristic providing in some cases distinguishable 'impedance states' that can serve to determine experimentally the state of charge of the molecule. Conducting and nonconducting states can be strategically engineered by arranging substituents in a molecule. The NH2 group localizes the highest energy occupied electronic states whereas the NO2 group localizes the lowest energy unoccupied orbitals of the oligomer systems. These effects yield two complementary molecular memories, each occupying a volume smaller than 1 nm3.

authors

• Seminario, Jorge

published proceedings

• JOURNAL OF PHYSICAL CHEMISTRY A

altmetric score

• 3

author list (cited authors)

• Seminario, J. M., Zacarias, A. G., & Derosa, P. A.

citation count

• 118

complete list of authors

• Seminario, JM||Zacarias, AG||Derosa, PA

publication date

• February 2001

publisher

• American Chemical Society (ACS)  Publisher

published in

• The Journal of Physical Chemistry A: Isolated Molecules, Clusters, Radicals, and Ions; Environmental Chemistry, Geochemistry, and Astrochemistry; Theory  Journal

keywords

• 34 Chemical Sciences
• 3406 Physical Chemistry
• 3407 Theoretical And Computational Chemistry
• 7 Affordable And Clean Energy

Digital Object Identifier (DOI)

• 10.1021/jp003283q

start page

• 791

end page

• 795

volume

• 105

issue

• 5

URL

• http%3A%2F%2Fdx.doi.org%2F10.1021%2Fjp003283q

user-defined tag

• 7 Affordable and Clean Energy