Cyanocarbons—Their History From Conducting to Magnetic Organic Charge Transfer Salts

Autor: R. E. Putscher, L. R. Melby, W. R. Hertler, Joel S. Miller, Walter Mahler, O. W. Webster
Rok vydání: 1989
Předmět:
Zdroj: Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics. 171:205-216
ISSN: 1044-1859
DOI: 10.1080/00268948908065796
Popis: A generation ago scientists at Du Pont's Central Research and Development Department sought to prepare, understand, and exploit organic molecules lacking aliphatic hydrogens and possessing a large cyano group to carbon ratio. Like many other ambitious quests the anticipated goal (of commercializing a new family of polymers) was not realized. Nonetheless, the discoveries made during this pursuit have made a permanent mark on the evolution of science. Most notably, the discovery of tetracyanoethylene (TCNE), and 7,7,8,8-tetracyano-p-quinodimethane (TCNQ), and the remarkable stability of their radical anions led to an unusual series of charge transfer salts. Many of the TCNQ electron-transfer salts exhibit high, metal-like, dc electrical conductivity. These initial observations led to the evolutionary development of conducting polymers and the realization of molecular based ferromagnets.
Databáze: OpenAIRE