ISSN:
1057-9257
Keywords:
IR
;
TEA(TCNQ)2
;
phase transition
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Polarised infrared and optical spectra were measured at temperatures between 5 and 300 K to study the 210 K structural phase transition in the organic charge transfer salt TEA(TCNQ)2. At high temperatures, characteristic spectral features of semiconducting 1:2 TCNQ salts are observed. At low temperatures, several changes are found. First, the electronic charge transfer sharpens and has enhanced oscillator strength in the low-temperature phase. Second, the vibrational lines split into clear doublets, whose appearance is associated with a sharp decrease in the phonon damping at low temperatures.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
Permalink