Organic glasses with tunable liquid-crystalline order through kinetic arrest of end-over-end rotation: the case of saperconazole

Soft Matter ◽  
2020 ◽  
Vol 16 (8) ◽  
pp. 2025-2030 ◽  
Author(s):  
Zhenxuan Chen ◽  
Junguang Yu ◽  
Rattavut Teerakapibal ◽  
Lieven Meerpoel ◽  
Ranko Richert ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Molecular Packing ◽  
Organic Glass ◽  
Crystalline Order ◽  
Organic Glasses ◽  
Kinetic Arrest ◽  
Systematic Control

Kinetic arrest of the end-over-end rotation controls the liquid-crystalline order in an organic glass prepared by cooling at different rates, allowing systematic control of molecular packing for electronic applications.

scholarly journals Organic Glasses with Tunable Liquid-Crystalline Order

2018 ◽  
Vol 120 (5) ◽  
Author(s):  
Rattavut Teerakapibal ◽  
Chengbin Huang ◽  
Ankit Gujral ◽  
Mark D. Ediger ◽  
Lian Yu
Keyword(s):  
Liquid Crystalline ◽  
Crystalline Order ◽  
Organic Glasses

The Influence of Monomer Structures on the Liquid Crystalline Order of Aramide Polymers:  An NMR Analysis

1999 ◽  
Vol 103 (44) ◽  
pp. 9505-9511 ◽  
Author(s):  
Dan McElheny ◽  
Veronica Frydman ◽  
Min Zhou ◽  
Lucio Frydman
Keyword(s):  
Liquid Crystalline ◽  
Nmr Analysis ◽  
Crystalline Order

Charge-Transport in Crystalline Organic Semiconductors with Liquid Crystalline Order.

ChemInform ◽  
2005 ◽  
Vol 36 (44) ◽  
Author(s):  
Panos Vlachos ◽  
Bassam Mansoor ◽  
Matthew P. Aldred ◽  
Mary O'Neill ◽  
Stephen M. Kelly
Keyword(s):  
Charge Transport ◽  
Organic Semiconductors ◽  
Liquid Crystalline ◽  
Crystalline Order

Relaxation of a liquid-crystalline order induced by an electric field

2006 ◽  
Vol 80 (12) ◽  
pp. 2029-2032 ◽  
Author(s):  
T. A. Rotinyan ◽  
E. I. Ryumtsev ◽  
A. V. Lezov
Keyword(s):  
Electric Field ◽  
Liquid Crystalline ◽  
Crystalline Order

Liquid Crystalline Order in Polymers and Copolymers with Cholesteric Side Groups

1978 ◽  
pp. 56-70 ◽  
Author(s):  
A. BLUMSTEIN ◽  
Y. OSADA ◽  
S. B. CLOUGH ◽  
E. C. HSU ◽  
R. B. BLUMSTEIN
Keyword(s):  
Liquid Crystalline ◽  
Crystalline Order

Surface equilibration mechanism controls the molecular packing of glassy molecular semiconductors at organic interfaces

2021 ◽  
Vol 118 (42) ◽  
pp. e2111988118
Author(s):  
Marie E. Fiori ◽  
Kushal Bagchi ◽  
Michael F. Toney ◽  
M. D. Ediger
Keyword(s):  
Organic Semiconductors ◽  
Physical Vapor Deposition ◽  
Liquid Crystalline ◽  
Glass Structure ◽  
Organic Substrate ◽  
Molecular Packing ◽  
Organic Interfaces ◽  
Superlattice Structures ◽  
Liquid Crystalline Materials ◽  
Underlying Substrate

Glasses prepared by physical vapor deposition (PVD) are anisotropic, and the average molecular orientation can be varied significantly by controlling the deposition conditions. While previous work has characterized the average structure of thick PVD glasses, most experiments are not sensitive to the structure near an underlying substrate or interface. Given the profound influence of the substrate on the growth of crystalline or liquid crystalline materials, an underlying substrate might be expected to substantially alter the structure of a PVD glass, and this near-interface structure is important for the function of organic electronic devices prepared by PVD, such as organic light-emitting diodes. To study molecular packing near buried organic–organic interfaces, we prepare superlattice structures (stacks of 5- or 10-nm layers) of organic semiconductors, Alq3 (Tris-(8-hydroxyquinoline)aluminum) and DSA-Ph (1,4-di-[4-(N,N-diphenyl)amino]styrylbenzene), using PVD. Superlattice structures significantly increase the fraction of the films near buried interfaces, thereby allowing for quantitative characterization of interfacial packing. Remarkably, both X-ray scattering and spectroscopic ellipsometry indicate that the substrate exerts a negligible influence on PVD glass structure. Thus, the surface equilibration mechanism previously advanced for thick films can successfully describe PVD glass structure even within the first monolayer of deposition on an organic substrate.

scholarly journals Synthesis and Mesomorphic Properties of Novel Bent-shaped Naphthyl Diketones

2019 ◽  
Vol 92 (2) ◽  
pp. 173-179 ◽  
Author(s):  
Anđela Buljan ◽  
Anamarija Knežević ◽  
Irena Dokli ◽  
Andreja Lesac
Keyword(s):  
Thermal Behaviour ◽  
Nematic Phase ◽  
Liquid Crystalline ◽  
Molecular Packing ◽  
Broad Temperature Range ◽  
Structural Modifications ◽  
Temperature Range ◽  
Mesomorphic Properties

The synthesis and liquid-crystalline properties are reported for novel naphthyl-based diketones incorporating variant terminal chains and lateral fluoro- substitution. Newly prepared materials exhibit a broad temperature range of the nematic phase. The study demonstrates how subtle structural modifications can be exploited to alter the efficiency of molecular packing and consequently the thermal behaviour.

Sign in / Sign up

Export Citation Format

Share Document