Title :
Molecular engineering of phase transition temperatures in dodecasil-3C clathrasils
Author :
Chae, H.K. ; Klemperer, W.G. ; Payne, D.A. ; Suchicital, C.T.A.
Author_Institution :
Illinois Univ., Urbana, IL, USA
Abstract :
Single crystals of the dodecasil-3C clathrasils 17SiO2- M (M=cyclohexane, cyclopentane, piperidine, pyrrolidine, cyclopentylamine, and cyclobutylamine) were grown using hydrothermal techniques. The influence that the organic guest molecule in a given silica host framework has on the bulk properties of the clathrasil was demonstrated. Each material displayed two phase transitions, one between 59 and 180°C and the other between -110 and -1°C. These phase transition temperatures could be systematically varied by varying the size of the guest molecule
Keywords :
ferroelectric transitions; organic compounds; cyclobutylamine; cyclohexane; cyclopentane; cyclopentylamine; dodecasil-3C clathrasils; molecular engineering; phase transition temperatures; piperidine; pyrrolidine; silica host; Chemical technology; Crystalline materials; Crystallization; Crystals; Dielectric materials; Hydrogen; Materials science and technology; Nitrogen; Silicon compounds; Temperature;
Conference_Titel :
Applications of Ferroelectrics, 1990., IEEE 7th International Symposium on
Conference_Location :
Urbana-Champaign, IL
Print_ISBN :
0-7803-0190-0
DOI :
10.1109/ISAF.1990.200297
