Highly Conducting Perylene Radical Salts

Abstract

Temperature dependent dc and microwave conjuctivity data together with EPR and optical reflectance measurements on the~mixedHsystem (pe)2(AsF 6)0,75(PF 6)0,35 x 0,85 CH 2 C1 2 are described. The data prove metallic behaviour of this organic solid down to 200 K.

Electron Spin Resonance: A Major Probe for Molecular Conductors

“…Cation radical salts have been obtained with arenes, − like pyrene, , perylene, − fluoroanthene, − or naphthalene . These molecules being only composed of light elements, i.e., carbone and hydrogen, the effect of the spin−orbit coupling is minimized and extremely narrow EPR line width have been obtained.…”

Boundary research between organic conductors and transistors: new trends for functional molecular crystals

“…42,90,100–102 However, such TTF-based OSCs are usually difficult to maintain long-term air stability due to their low ionisation potential of about 4.8 eV. 103–106 Meanwhile, highly conducting CT complexes/salts have been reported even for non-TTF-type donors, such as perylene 107–112 and fluoranthene, 113–116 dithiapyrene, 117–123 and chalcogen-bridged acenes, 124–136 but the transistor properties of these donors are still limited. 137–144 This section describes a new class of non-TTF-based organic conductors derived from high-performance OSC materials.…”

“Unusual” lines observed in low-frequency cw ENDOR of photoexcited triplet state molecules: the primary donor triplet in photosynthetic reaction centers as an example

“…The first, a solution of perinaphthenyl radicals (PNT) in mineral oil, has a well resolved simple ENDOR spectrum [8]. The second, a single crystal of (perylenyl)2AsF 6, has an EPR spectrum of a single exchange-narrowed line [ 16], but is ENDOR silent. For these samples, with EPR lines as narrow as several tens of milligauss, ir is easy to trace the experimental conditions of the appearance of additional lines in the ENDOR and EPR spectra, to analyze the mechanism of their generation and to develop a strategy to use these unusual lines when they contain spectral information, or to get rid of them when they are nothing but artifacts.…”

“…To make things even clearer we have used a single crystal sample of (perylenyl)2AsF 6 [16] with a single narrow EPR line. The EPR spectrum and its transformations under the influence of an RF field are shown in Fig.…”