ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
A novel discotic triphenylene derivative bearing one triphenylene discogen as core andthree cyano-biphenyl moieties was synthesized and its thermal behavior was studied using polarizingoptical microscope, differential scanning calorimeter and X-ray diffraction. It was found that thismolecule containing [decylene?] spacers showed nematic phase. After being mixed with methylmethacrylate (MMA), the discogen showed nematic phase at the mesophase temperature range(64~85 ºC) and oriented spontaneously in the mixture after annealing for 2 hours in the mixture. Theorientation can be stabilized by the polymerization of MMA. The orientation can be fixed by thepolymerization of MMA. It was treated directly on glass substrate, which surface did not treat bypolyimide film and confirmed the orientation was proved by X-ray diffraction. This offers If thealignment of the discotic molecules can be freely controlled and fixed, a useful mean to produce newarea of optically anisotropic film will be produced with this material
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.678.pdf