Synthesis and properties of ultralow dielectric constant porous polyimide films containing trifluoromethyl groups
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Polymer Science"
DOI: 10.1002/app.44494
Abstract: In this research, a series of porous copolyimide (co-PI) films containing trifluoromethyl group (CF3) were facilely prepared via a phase separation process. The co-PI were synthesized by the reaction of benzophenone-3,3′,4,4′-tetracarboxylic dianhydride (BTDA) with two… read more here.
Keywords: porous films; containing trifluoromethyl; films containing; synthesis properties ... See more keywords
New thiourea and urea derivatives containing trifluoromethyl- and bis-triflouromethyl-4H-chromen-3-yl substituents
Sign Up to like & getrecommendations! Published in 2019 at "Molecular Physics"
DOI: 10.1080/00268976.2018.1514132
Abstract: ABSTRACT Two new thiourea (1) and urea (2) derivatives, substituted with 2-trifluoromethyl-4H-chromen-3-yl moieties at defined positions, were obtained by convenient synthetic methodologies. The pure compounds were studied in solid state by vibrational spectroscopy (FT-IR and… read more here.
Keywords: urea derivatives; containing trifluoromethyl; derivatives containing; thiourea urea ... See more keywords