title: Triazole-modified triphenylene derivative: self-assembly and sensing applications.
abstract: Triphenylene-based discotic liquid crystal 3 bearing 1,2,3-triazole groups has been synthesized using "click" chemistry. Discotic mesogen 3 has good thermal stability, and incorporation of triazole groups results in stabilization of columnar mesophases down to room temperature and formation of organogels in cyclohexane and mixed solvents such as hexane and dichloromethane (4:1 v/v). Characterization of the organogel of 3 in cyclohexane revealed a porous network. However, presence of Cd(2+) ions in solution obstructed the self-assembly of this derivative due to preferred interactions between Cd(2+) ions and triphenylene units over π-π interactions among triphenylene groups. Further, strong emission of derivative 3 in its nonaggregated form makes it a promising fluorescence sensory material for nitroaromatic compounds.
authors.affiliation: Department of Chemistry, UGC Sponsored-Centre for Advance Studies-I, Guru Nanak Dev University, Amritsar-143005, Punjab, India. vanmanan@yahoo.co.in
authors.forename: Vandana
authors.initials: V
authors.lastname: Bhalla
authors.forename: Hardev
authors.initials: H
authors.lastname: Singh
authors.forename: Manoj
authors.initials: M
authors.lastname: Kumar
authors.forename: S Krishna
authors.initials: SK
authors.lastname: Prasad
mesh_terms: D002104:Cadmium / Q000737:chemistry; D002152:Calorimetry, Differential Scanning; D002911:Chrysenes / Q000032:analysis / Q000737:chemistry*; D057930:Click Chemistry; D004581:Electronics / Q000379:methods*; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000032:analysis / Q000737:chemistry*; D005782:Gels / Q000032:analysis / Q000737:chemistry*; D007477:Ions; D050866:Liquid Crystals / Q000032:analysis / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008855:Microscopy, Electron, Scanning; D053838:Scattering, Small Angle; D012997:Solvents / Q000737:chemistry; D014230:Triazoles / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D002911:Chrysenes; D005456:Fluorescent Dyes; D005782:Gels; D007477:Ions; D012997:Solvents; D014230:Triazoles; D002104:Cadmium; C009590:triphenylene