Eur. Phys. J. B 78, 283-289 (2010)
https://doi.org/10.1140/epjb/e2010-10590-1

Infrared investigations of the one-dimensional organic conductors (perylene)₂ M (mnt)₂, M = Au, Pt

¹ 1. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany
² Instituto de Telecomunicações, Polo de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
³ Departmento de Química, Instituto Tecnológico e Nuclear/CFMCUL, 2686-953 Sacavém, Portugal

Corresponding author: ^a dressel@pil.physik.uni-stuttgart.de

Received: 30 July 2010
Revised: 24 September 2010
Published online: 17 November 2010

Abstract

The optical properties of the one-dimensional organic conductor (perylene)₂Pt(mnt)₂ and its Au analogue have been investigated at ambient and low temperatures. The spectra along the stacks of the molecules show a simple Drude behavior with no detectable influence of electron-electron interactions. Basing on the spectra for different polarizations an assignment of the vibrational modes is made. Perpendicular to the stacks, a wide band observed in the mid-infrared range evidences a charge transfer between perylene and anion stacks. The electronic properties are discussed in comparison with other quasi-one-dimensional synthetic metals.