Odd–even effects in the director dynamics of the nematic phases formed by symmetric and non-symmetric liquid crystal dimers. An ESR investigation
Literature Information
Liquid crystal dimers, in which two mesogenic groups are linked by a flexible spacer, have been found to exhibit a pronounced odd–even effect in many of their physical properties. These include the nematic–isotropic transition temperatures, transitional entropies and their orientational order. In contrast, there have been far fewer studies of the director dynamics within the nematic phases of liquid crystal dimers. Here we present results from investigations of the magnetic field-induced relaxation time for the director in the nematic phase, using ESR spectroscopy, for the non-symmetric α-(4′-cyanobiphenyl-4-yloxy)-ω-(4-alkylanilinebenzylidene-4′-oxy)alkane dimers and the symmetric α,ω-bis(4-alkylanilinebenzylidene-4′-oxy)alkane dimers. Unlike quantities such as the orientational order parameter it is not so apparent as to what temperature scale should be used to compare the relaxation time, which depends on the rotational viscosity coefficient γ1. We discuss various possibilities and show that for a certain choice the relaxation times do exhibit an odd–even effect as well as a dependence on the nature of the smectic phase following the nematic.
Related Literature
The role of hydrogen bonding in water–metal interactions
Adrien Poissier, Sriram Ganeshan, M. V. Fernández-Serra
DOI: 10.1039/C0CP00994F
Design of optimally switchable molecules by genetic algorithms
Niss Ole Carstensen, Johannes M. Dieterich, Bernd Hartke
DOI: 10.1039/C0CP01065K
The role of calcium in membrane condensation and spontaneous curvature variations in model lipidic systems
Anan Yaghmur, Barbara Sartori, Michael Rappolt
DOI: 10.1039/C0CP01036G
The active site structure of nitrided and oxynitrided graphite as a cathode catalyst in a fuel cell
Hiroyuki Tominaga, Wataru Ikeda, Masatoshi Nagai
DOI: 10.1039/C0CP02209H
Microenvironment-switchable singlet oxygen generation by axially-coordinated hydrophilic ruthenium phthalocyanine dendrimers
Uwe Hahn, Francesca Setaro, Xavier Ragàs, Angus Gray-Weale, Santi Nonell, Tomas Torres
DOI: 10.1039/C0CP01015D
Fullerene derivative acceptors for high performance polymer solar cells
Youjun He, Yongfang Li
DOI: 10.1039/C0CP01178A
Beryllium and boron decoration forms planar tetracoordinate carbon strips at the edge of graphene nanoribbons
Bo Xiao, Yi-hong Ding, Chia-chung Sun
DOI: 10.1039/C0CP01498B
Factors controlling charge recombination under dark and light conditions in dye sensitised solar cells
Emilio Palomares, Amparo Forneli
DOI: 10.1039/C0CP01855D
Size and morphology of assemblies formed by DNA and lysozyme in dilute aqueous mixtures
Anna M. Carnerup, John Janiak, Karin Schillén, Maria da Graça Miguel
DOI: 10.1039/C0CP01220C
Photocatalysis of PbS quantum dots in a quantum dot-sensitized solar cell: photovoltaic performance and characteristics
Beibei Ma, Liduo Wang, Haopeng Dong, Rui Gao, Yi Geng, Yifeng Zhu, Yong Qiu
DOI: 10.1039/C0CP02415E
You might also like
What are the main uses of 1H-Indazole-6-carbonitrile (CAS: 141290-59-7)?
1H-Indazole-6-carbonitrile finds applications in pharmaceuticals, where it serve...
How should waste containing Dioctyl (2E)-2-butenedioate (CAS: 2997-85-5) be handled?
Waste containing Dioctyl (2E)-2-butenedioate (CAS: 2997-85-5) should be collecte...
What industries use Sodium [(1,2-benzoxazol-3-ylmethyl)sulfonyl]azanide (CAS: 68291-98-5)?
Sodium [(1,2-benzoxazol-3-ylmethyl)sulfonyl]azanide is primarily used in pharmac...
Are there alternatives to Dimethyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,6-pyridinedicarboxylate (CAS: 741709-66-0) in synthesis?
Dimethyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,6-pyridinedicarboxyla...
How should waste containing 2-Fluoro-6-hydrazinopyridine (CAS: 80714-39-2) be handled?
Waste containing 2-Fluoro-6-hydrazinopyridine (CAS: 80714-39-2) should be manage...
What is 6-Formyl-2-pyridinecarboxylic acid (CAS: 499214-11-8)?
6-Formyl-2-pyridinecarboxylic acid is an organic compound with the molecular for...
What is the market or research trend for 3-(3,4-dimethoxyphenyl)-2,5-dimethyl-N-(2-morpholin-4-ylethyl)pyrazolo[1,5-a]pyrimidin-7-amine (CAS: 900874-91-1)?
Research trends for this compound indicate a focus on its potential applications...
How is 9H-Tribenzo[b,d,f]azepine (CAS: 29875-73-8) typically synthesized?
9H-Tribenzo[b,d,f]azepine is typically synthesized via a multi-step process invo...
How is 1-Cyclopropyl-7-ethoxy-6-fluoro-8-methoxy-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid (CAS: 1797982-51-4) typically synthesized?
1-Cyclopropyl-7-ethoxy-6-fluoro-8-methoxy-4-oxo-1,4-dihydro-3-quinolinecarboxyli...
How should waste containing Methyl 3-oxo-1,2,3,4-tetrahydro-6-quinoxalinecarboxylate (CAS: 671820-52-3) be handled?
Waste containing Methyl 3-oxo-1,2,3,4-tetrahydro-6-quinoxalinecarboxylate (CAS: ...
Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.











![Sodium (2Z)-7-{[(2R)-2-amino-2-carboxyethyl]sulfanyl}-2-({[(1S)-2,2-dimethylcyclopropyl]carbonyl}amino)-2-heptenoate structure Sodium (2Z)-7-{[(2R)-2-amino-2-carboxyethyl]sulfanyl}-2-({[(1S)-2,2-dimethylcyclopropyl]carbonyl}amino)-2-heptenoate structure](https://static.chemtradehub.com/structs/811/81129-83-1-441c.webp)


