Thermodynamics of dimerization in solution as a rational tool for inducing nematic vs. smectic organizations in lanthanidomesogens.
نویسندگان
چکیده
The judicious tuning of simple thermodynamic parameters controlling dimerization processes in solution induces a rational switch between smectic and nematic organizations in thermotropic lanthanide-containing liquid crystals.
منابع مشابه
Thermodynamics of the Re-entrant Nematic-bilayer Smectic a Transition
Recent measurements of nematic-smectic A pressure-temperature phase boundaries obtained in bilayer forming smectic A liquid crystals are analyzed. A thermodynamic model which accounts for the elliptical shape of the phase boundaries and which facilitates determination of the various parameters determining the phase boundary is presented and discussed.
متن کاملSurface and smectic layering transitions in binary mixtures of parallel hard rods.
The surface phase behavior of binary mixtures of colloidal hard rods in contact with a solid substrate (hard wall) is studied, with special emphasis on the region of the phase diagram that includes the smectic A phase. The colloidal rods are modeled as hard cylinders of the same diameter and different lengths, in the approximation of perfect alignment. A fundamental-measure density functional i...
متن کاملTheory and simulation of biaxial nematic and orthogonal smectic phases formed by mixtures of board-like molecules
Variational cluster calculations and Monte Carlo simulations are applied to hard-body board-like models of biaxial molecules forming liquid crystalline phases. The molecular long axes are assumed for simplicity to be fully oriented. Depending on the extent of transverse anisometry in the molecular shape, these systems can exhibit biaxial nematic phases as well as uniaxial and biaxial orthogonal...
متن کاملBiaxial mesophase behavior of amphiphilic anisometric colloids: a simulation study.
The phase behavior of amphiphilic anisometric particles is explored using Monte Carlo simulations. The particles are composed of two incompatible laterally attached units: a spherocylinder and a spheroplatelet. A liquid crystalline phase polymorphism is obtained including biaxial nematic, (quasi long range biaxial) calamitic smectic-A, biaxial lamellar and columnar phases. The simulation result...
متن کاملEncoding calamitic mesomorphism in thermotropic lanthanidomesogens.
Peripheral cyanobiphenyl dendrimers impose a microphase organization compatible with smectic mesomorphism, in which the bulky nine-coordinate lanthanide core is located between the decoupled mesogenic sublayers made up of parallel cyanobiphenyl groups.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Chemical communications
دوره 2 شماره
صفحات -
تاریخ انتشار 2008