A5064858991- Liquid Crystal Research Advancements
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Synthesis and Properties of Aromatic Compounds
- Photochromic and Fluorescence Chemistry
- Molecular spectroscopy and chirality
- Plant Reproductive Biology
- Surfactants and Colloidal Systems
- Advanced Materials and Mechanics
- Periodontal Regeneration and Treatments
- Nonlinear Dynamics and Pattern Formation
- Supramolecular Self-Assembly in Materials
- Crystallography and molecular interactions
- Oral and gingival health research
- Organometallic Compounds Synthesis and Characterization
- Oral microbiology and periodontitis research
- Surgical Sutures and Adhesives
- Tattoo and Body Piercing Complications
- Photochemistry and Electron Transfer Studies
- Bone Tissue Engineering Materials
- Oral and Maxillofacial Pathology
- Laser Applications in Dentistry and Medicine
- IoT and Edge/Fog Computing
- Photonic Crystals and Applications
- Optical Polarization and Ellipsometry
Indian Institute of Science Education and Research Mohali
2017-2023
City of Knowledge
2020
Guru Nanak Dev University
2015
St. Joseph’s University Medical Center
2015
Flexoelectricity may have an important impact on the switching properties of nematic and cholesteric liquid crystals due to linear coupling between flexoelectric polarization crystal applied electric field. This is origin extraordinary electro-optic effect in cholesterics aligned uniform lying helix texture, resulting fast field control both rise fall times. Therefore, become issue when designing synthesizing materials and/or preparing their mixtures with appropriate compounds (dopants)....
Herein, we report a new type of azobenzene-based unsymmetrical bent-core molecules exhibiting photoswitchability in the liquid crystalline state, solid and solution state mixture upon UV irradiation intense visible light. The compounds exhibited solid-state photochromism exposure to light, whereas reversible phase transitions were observed via both light exposure. Crystal structure analysis reveals basic structural understanding such as nonplanar bent molecular shape, antiparallel...
Three-ring based BLCs exhibiting orthogonal smectic and nematic phases with antiparallel arrangement as derived from SCXRD X-ray scattering results.
Hockey-stick-shaped liquid crystals are interesting due to their unusual physical properties. Nematic phase observed in these materials have shown promising ferroelectric-like switching, ease of alignment a planar and homeotropic cell, large flexoelectricity, etc. Polar moieties viz. F, Cl, NO2, etc., molecular architecture lead the development permanent dipole moment which turn affects structure Herein, we designed synthesised new series four-ring-based hockey-stick-shaped molecules having...
An extensive study on the effect of terminal halogens structure–property relationship polar L-shaped mesogens has been elucidated.
Research on low-temperature polar bent-core nematogens having lower molecular weight has gathered appreciable momentum by virtue of their significance in potential applications. However, the lack availability and easy-to-perform synthesis processes appears to be bottleneck towards fabrication thereby limiting possible device Hence, we have designed a new class achiral symmetrical three-ring-based-bent shaped molecules incorporating an imine ester linkage at bend with highly nitro/cyano...
We have investigated two new series of unsymmetrical four-ring bent-core molecules with methylated azobenzene wings exhibiting nematic mesophase. The difference between the was in relative position methyl (−CH3) substituent respect to azo (−N═N−) linkage molecule. Single-crystal X-ray diffraction analysis unravels significant insights into spatial molecular arrangement and stacking interactions these systems. materials were able show photoswitching behavior photomasking effect...
Probing “cybotactic clusters” in bent-core nematic liquid crystals using microrheological technique.
A simple molecular design of unsymmetrical bent-core molecules exhibiting low layer shrinkage and a dip in the birefringence at SmA–SmC phase transition, typical characteristics “de Vries” liquid crystals.
Bent-core liquid crystals (BLCs) are a class of thermotropic LCs that exhibit chiral and polar superstructures in achiral molecules. Progress design synthesis novel bent-core architectures search unconventional properties enriched the field BLCs. Here, we present comprehensive review recent bent-shaped LCs, discuss relevant simulation theoretical models, which draws comparison to experimental results, survey advances molecular structure-property correlation, predict future directions from...
First examples of smart bent-core materials that exhibited frustrated structures with high polar order and thermochromism.
Abstract Copper(I) halides with triphenyl phosphine and imidaozlidine‐2‐thiones ( L ‐NMe, ‐NEt, ‐NPh) in acetonitrile/methanol (or dichloromethane) yielded copper(I) mixed‐ligand complexes: mononuclear, namely, [CuCl(κ 1 ‐S‐ ‐NMe)(PPh 3 ) 2 ] ), [CuBr(κ ‐NEt)(PPh 5 [CuI(κ 6 ‐NPh)(PPh 7 8 dinuclear, [Cu (κ ‐I) (μ‐S‐ ‐NMe) (PPh (μ‐Cl) ‐NEt) 4 ). All complexes were characterized analytical data, IR NMR spectroscopy, X‐ray crystallography. Complexes – , each formed crystals the triclinic system...
Abstract Recently, an unprecedented observation of polar order, thermochromic behavior, and exotic mesophases in new chiral, bent‐shaped systems with a −CH 3 moiety placed at the transverse position central core was reported. Herein, homologous series compounds even‐numbered carbon chains from n =4 to 18 were synthesized, which −Cl substituted for kink drastic modification phase structure molecule observed. An unusual stabilization cubic blue (BP) over wide range 16.4 °C has been witnessed....
A study on the photoswitching behavior of azobenzene-based polar hockey-stick-shaped liquid crystals (HSLCs) has been presented. Two new series five phenyl rings based HSLCs have designed and synthesized. Solution state photoisomerization synthesized materials was investigated thoroughly via UV-visible 1 H NMR spectroscopic techniques, whereas solid-state photochromic elucidated physical color change materials, study, powder XRD, FE-SEM techniques. The exhibited decent for different...
In liquid crystalline systems, the presence of polar groups at lateral or terminal positions is fundamentally and technologically important. Bent-core nematics composed molecules with short rigid cores usually exhibit highly disordered mesomorphism some ordered clusters that favourably nucleate within. Herein, we have systematically designed synthesized two new series bent-core compounds comprised unsymmetrical wings, electronegative -CN -NO2 one end, flexible alkyl chains other end. All...
Introduction: Portal vein thrombosis (PVT) is the most common cause of extra hepatic portal obstruction. It can occur in association with cirrhosis, as a result malignant invasion or pro-thrombotic state. Scant epidemiological data exist on annual number hospitalizations and patient characteristics for this disease. We aim to determine national inpatient admission trends demographic variation pt discharge diagnosis Vein Thrombosis. Methods: analyzed National Inpatient Sample Database (NIS)...