On the thermal behaviour and thermo-oxidative stability of liquid crystalline triphenylene compounds

Columnar discotic materials are considered for applications in the area of photoconductivity and light-emitting diodes, A major requirement is their s tability at elevated temperatures and in the presence of oxygen, The therma l and thermo-oxidative behaviour of discotic triphenylene derivatives was i nvestigated by us using various methods, in particular by chemiluminescence (CL), UV-vis absorption spectroscopy and in situ thermogravimetry-mass spe ctroscopy (TG-MS), Various degradation processes are described for increasi ng temperature, and their influences on functional properties are discussed , Copyright (C) 1999 John Wiley & Sons, Ltd.