NMR Study of Molecular Dynamics in a Dho Columnar Mesophase
نویسندگان
چکیده
für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namensnennung 4.0 Lizenz. NMR Study of Molecular Dynamics in a Dho Columnar Mesophase
منابع مشابه
Solvation sites in mesophases of discotic liquid crystals
2014 The deuterium quadrupole splitting, 03BDQ, of C6D6 dissolved in a number of discotic liquid crystals has been measured over the temperature range of the mesophase stability. Three different types of mesophases were used : (i) Dho, which is a columnar hexatic phase with ordered molecular stacking; (ii) Drd, which is a rectangular biaxial columnar phase with disordered molecular stacking ; (...
متن کاملCharge transport in semiconductors with multiscale conformational dynamics.
In partially ordered organic semiconductors, the characteristic times of nuclear motion are comparable to those of charge carrier dynamics. It is impossible to describe charge transport using either static disorder models or temperature averaged electronic Hamiltonians. We build a model Hamiltonian which allows the study of charge transport whenever carrier and nuclear dynamics are not easily s...
متن کاملIterative Force-Field Calculation and Molecular Dynamics of Cyclooctanone
Body's iterative force-field computer program has been used to calculate strain energies in cyclooctanone (I). 348 MHZ 1H NMR spectra of (I) have been investigated over the temperature range of 25° to -160°C. Two conformation processes affect the 1H NMR spectrum of (I). Iterative force-field calculations on the conformations and conformational interconversion paths of ...
متن کاملMobility changes of side chains ascribed to density modulations along columnar structures detected by 2D NMR
The molecular dynamics and phase transitions of a columnar liquid crystal based on hexaether-substituted rufigallol mesogens were studied by a combination of X-ray scattering as well as ID and 2D solid-state NMR spectroscopy. A correlation of the anisotropic molecular moIion, with the molecular symmetry and the phase symmetry was established. 2D-exchange
متن کاملSupramolecular Liquid Crystals. Self-Assembly of a Trimeric Supramolecular Disk and Its Self-Organization into a Columnar Discotic Mesophase
6,7-Bis(alkyloxy)-2,3-dihydrophthalazine-1,4-diones self-assemble into lactim-lactam trimeric disks in solution as demonstrated by SEC and NMR. With suitable substituents, as in Phthal8, Phthal12, and Phthal16, these disks self-organize into a thermotropic, columnar, discotic phase. The disubstituted phthalhydrazide unit thus represents a general motif for the recognition-induced generation of ...
متن کامل