Synchrotron x-ray study of the orientational ordering D2-D1 structural phase transition of freely suspended discotic strands in triphenylene hexa-n-dodecanoate
Journal Article
·
· Phys. Rev. Lett.; (United States)
We demonstrate the feasibility of x-ray scattering studies of freely suspended strands of discotic liquid crystals (of triphenylene hexa-n-dodecanoate). We are able to grow strands, which are stable for days, of diameter >50 ..mu..m with a few single crystal domains. Unexpectedly, we find that the quasi two-dimensional structural phase transition from columnar D2 to columnar D1 corresponds to the orientational ordering of columns of molecules with the molecules tilted at finite angles to the column axis in both phases.
- Research Organization:
- Exxon Research and Engineering Company, Corporate Research Science Laboratories, Annandale, New Jersey 08801
- OSTI ID:
- 6507684
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 53:12; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
AROMATICS
BREMSSTRAHLUNG
COHERENT SCATTERING
CONDENSED AROMATICS
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALS
DATA
DIFFRACTION
DODECANE
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
FLUIDS
HYDROCARBONS
INFORMATION
LIQUID CRYSTALS
LIQUIDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORIENTATION
PHASE TRANSFORMATIONS
RADIATIONS
SCATTERING
SYNCHROTRON RADIATION
TRIPHENYLENE
X-RAY DIFFRACTION
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
AROMATICS
BREMSSTRAHLUNG
COHERENT SCATTERING
CONDENSED AROMATICS
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALS
DATA
DIFFRACTION
DODECANE
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
FLUIDS
HYDROCARBONS
INFORMATION
LIQUID CRYSTALS
LIQUIDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORIENTATION
PHASE TRANSFORMATIONS
RADIATIONS
SCATTERING
SYNCHROTRON RADIATION
TRIPHENYLENE
X-RAY DIFFRACTION