Morphology Control of Oxadiazole Compounds by Introduction of Amine Moieties

Abstract

This paper deals with the presentation and discussion of some recent measurements on the interaction of electron and ion swarms in gases, with particular emphasis on flourinated gases. The processes to be discussed are related to electron impact ionization and attachment, including Penning ionization and electron detachment. Electron transport is discussed in mixtures of SF 6 and fluorocarbon gases, where interesting regions of negative differential conductivity have been observed in C 2 F 4 , and apparent pressure dependences of the drift velocity in C 4 F 8 . Ion transport is discussed in terms of recent measurements on positive and negative ions in SF 6 and Ar. Finally, the subject of ion-molecule reactions is illustrated with the dissociation and charge transfer processes of daughter ions in nitrogen. Throughout the paper, the advantages and limitations of both the pulsed Townsend technique and the drift tube-mass spectrometer are highlighted.