Accession Number : AD0767674

Title :   An Electron Spin Resonance Study of n-Doped TCNQ and 2:1 TCNQ Complex Salts.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Nyarady,Stefan Alan

Report Date : JUN 1973

Pagination or Media Count : 61

Abstract : Complex 2:1 7,7,8,8-tetracyanoquinodimethand (TCNQ) salts of quinoline, 2-methylquinoline, 4-methylquinoline, and 7-methylquinoline were made. Their ESR spectra were observed and their magnetic susceptibilities and resistivities were determined. A new donor, 1,4-dimethyl-1,4-dihydro-s-tetrazine(DMDHT), was tried with TCNQ as acceptor. Magnetic susceptibility, resistivity, and ESR g-value measurements were made on the resulting complex. A complex of DMDHT(+)/C104(-) was made and an intense ESR singlet was observed. The ESR absorption of doped TCNQ was relatively constant from 350K to 100K. A possible explanation for this observed behavior is an excited state triplet 0.02 eV above the valence band of TCNQ. The lack of an observed doublet is explained with the 'almost-localized' electron model. As ESR kinetic study of the high temperature decomposition of TCNQ indicated more than one species resulting from decomposition. (Modified author abstract)

Descriptors :   (*NITRILES, *ELECTRON PARAMAGNETIC RESONANCE), (*QUINOLINES, ELECTRON PARAMAGNETIC RESONANCE), (*SEMICONDUCTORS, QUINOLINES), (*CYCLOHEXENES, SEMICONDUCTORS), PYROLYSIS, MAGNETIC PROPERTIES, DOPING, THESES, ELECTRICAL RESISTANCE, SALTS, NITROGEN HETEROCYCLIC COMPOUNDS

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE