Organic conductors, novel

Another interesting application of the organic conductors was promoted by the discovery of a TCNQ-based class of ARS which is able to melt without destruction [8, 9]. This property is indeed highly atypical for organic metals. Compounds of this type may be used in the production of novel... 

Upon treatment with CS2 at 170°C, 4,6-dihydro thieno[3,4-d]-l,2,3-thiadiazole (70) yielded 4,6-dihydrothieno[3,4-(/]-1,3-dithiole-2-thione (71), which was a useful intermediate for the synthesis of a novel organic conductor <89TL7249>. 

As part of an effort to synthesize novel organic conductors based upon tetrathiafulvalene, 4,6-dihydrothieno[3,4-rf]-1,2,3-thiadiazole (70) was prepared from the hydrazone (100), together with an appreciable amount of 4,5-dihydrothieno[2,3-c/]-l,2,3-thiadiazole (99) (89TL7249). 

The absorption IR spectra of the organic conductors, of both ion-radical salts and charge-transfer (CT) complexes, created by a given electron acceptor with various donors, share plenty of characteristic features. In addition to rather narrow and weak bands characteristic of the donor D and acceptor A molecules, a few novel absorption bands appear. They are polarized in the plane perpendicular to that of D and A molecules, broad and very intensive. The presence of such unusually polarized bands can be accounted for by the activation of totally symmetric donor or acceptor vibrations resulting from e-mv coupling. Typical polarized reflection spectra of the triethylammonium (TEA) (TCNQ)2 salt for three light polarizations [18] are shown in Fig. 1. It is fascinating that the reflectivity for... 

A Novel Phase of Organic Conductors Conducting Polymer Solutions... 

Polyanisidine (PANIS) is a new and novel electrically conductive polymer (1) that is generating much interest due to it s combination of air stability, electrical conductivity, and solubility in organic solvents. This unique blend of properties has been heretofore unavailable in synthetic conductors. PANIS is synthesized by either chemical or electrochemical means. The polymer may exist in four unique states, each a function of the level of oxidation and protonation. Each state is characterized by a unique set of electrical and optical properties, solubility and air stability. The states are easily convertible by simple chemical and electrical means. The most conductive and stable form of PANIS is the oxidized acid form shown in Figure 1. 

Car-Parrinello simulations have also become a powerful tool in the characterization of novel materials, as documraited for example by studies on carbon," "" boron nitride"" and peptide""" nanotubes, zeolithes,"" "" "" "" metal/organic tuimeling junctions,""" superionic conductors,"" "" conducting... 

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