Results 31 to 40 of about 1,137,059 (290)

Rotaxanes with dynamic mechanical chirality: Systematic studies on synthesis, enantiomer separation, racemization, and chiral-prochiral interconversion

Frontiers in Chemistry, 2022
Dynamic mechanical chirality of [2]rotaxane consisting of a Cs symmetric wheel and a C2v symmetric axle is discussed via the synthesis, enantiomer separation, racemization, and chiral-prochiral interconversion.
Fumitaka Ishiwari, Toshikazu Takata, Toshikazu Takata, Toshikazu Takata   +3 more
doaj   +1 more source

Application of Natural and Modified Biomacromolecules in Miniaturised Separative Analytical Techniques [PDF]

In pharmaceutical R & D, drug stereochemistry, and consequently the rotation of enantiomers, is very important. Because they act as chiral selectors in vivo, biomacromolecules have been extensively used as chiral selectors for the liquid chromatographic (
Salmon, Andrew B
core   +5 more sources

Rapid separation of warfarin enantiomers on polysaccharide chiral stationary phases with a chiral recognition mechanism by computational approaches

Journal of Taibah University for Science
The present article describes fast, inexpensive and reproducible chiral-HPLC separation of warfarin enantiomers with Chiralpak IA, Chiralpak AS-3R and Chiralcel OD-RH CSPs. The separation factors for these CSPs ranged from 1.33−2.50, 0.54−2.23, and 2.23;
Marwa Ghouizi, Iqbal Hussain, Khaled Sekkoum, Nasser Belboukhari, Khairedine Kraim, Mouslim Messali, Imran Ali   +6 more
doaj   +1 more source

Chemistry and characterization of high value acyclic alcohols in Ocimum africanum Lour. hybrids and their biological potential

Industrial Crops and Products
Ocimum africanum Lour., a lemon-scented, short-lived annual basil is well known for its high citral content and essential oil yield. Besides its usages as food flavouring agent, fragrance intermediates are the other noteworthy applications.
Kamlesh Yadav, Yatish Pant, Shubham Srivatava, Divya Bhatt, R.K. Lal, Akansha Dwivedi, Anand Mishra, D.U. Bawankule, Manoj Semwal, C.S. Chanotiya   +9 more
doaj   +1 more source

Chiral Selectors in Capillary Electrophoresis: Trends during 2017–2018

Molecules, 2019
Chiral separation is an important process in the chemical and pharmaceutical industries. From the analytical chemistry perspective, chiral separation is required for assessing the fit-for-purpose and the safety of chemical products.
Raymond B. Yu, Joselito P. Quirino
doaj   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Metal–Organic Frameworks-Based Analytical Devices for Chiral Sensing and Separations: A Review (2012–2022)

Chemosensors, 2022
Metal–organic frameworks (MOFs), as high-surface-area materials, have shown promise in various areas of application, such as chiral sensing and separation, due to their flexibility in design and organized porous cages.
Soodabeh Hassanpour, Navid Niaei, Jan Petr   +2 more
doaj   +1 more source

Migration and separation in structured microfluidic systems [PDF]

, 2013
Bogunovic L. Migration and separation in structured microfluidic systems. Bielefeld: Bielefeld University; 2013.Spatially structured microfluidic channels in a state far from thermal equilibrium have been developed to address three fundamental problems ...
Bogunovic, Lukas
core  

Structure‐Guided Dynamical Mechanics in Bioinspired Double Twisted Laminated Thin Films

Advanced Functional Materials, EarlyView.
This work explores a dynamic mechanistic study of crack propagation and puncture testing via real‐time monitoring of crack initiation, propagation, and termination through nature‐inspired single and double twisted architectures fabricated from cellulose nanocrystals.
Justin Brackenridge, Olivia Harper, Jaejun Lee, Sergio Gonzalez‐Munoz, Vladimir V. Tsukruk   +4 more
wiley   +1 more source

Nanoconfinement‐Induced Second‐Harmonic Circular Dichroism via Chirality–Ferroelectric Coupling

Advanced Functional Materials, EarlyView.
Nanoconfinement of a ferroelectric nematic liquid crystal within a chiral nanoporous sponge yields an enhanced second‐harmonic generation circular dichroism (|gSHG–CD| ≈ 1.1). Polarization‐resolved analysis suggests an additional magnetic‐dipole‐associated nonlinear contribution under nanoconfinement, highlighting chirality–ferroelectric coupling as a ...
Jae‐Jin Lee, Hiroya Nishikawa, Tae‐Woong Moon, Dong‐Ha Kim, Fumito Araoka, Suk‐Won Choi   +5 more
wiley   +1 more source