Results 111 to 120 of about 140,285 (306)

Structure determination of Cyclic Peptides of the Nocardamine class from a marine-derived bacterium of the genus Streptomyces

, 2005
Actinomycetes have been the most significant source for compounds with biological activity and clinical usefulness. In an effort to search for novel marine natural products, we have collected more than 3,000 strains of actinomycetes from marine ...
원호식, 신희재, 김태식
core  

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

Advanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti, Valerio Di Lisio, Lucia Cardo, Alessandro Camilli, Estela Moretón Alfonsín, Daniele Cangialosi, Amaia Iturrospe Ibarra, Arantxa Arbe, Maurizio Prato   +8 more
wiley   +1 more source

Solving problems with NMR spectroscopy /

, 1996
Solving Problems with NMR Spectroscopy presents the basic principles and applications of NMR spectroscopy with only as much math as is necessary. It shows how to solve chemical structures with NMR by giving clear examples and solutions.
Choudhary, Muhammad Iqbal., Rahman, Atta-ur-   +1 more
core  

Solvent‐Free Thermal Defect Engineering in Molecular Frameworks With Volatile Linkers

Advanced Materials, EarlyView.
Thermal removal of neutral volatile linkers enables precise and solvent‐free generation of metal vacancies in MOFs. This strategy affords redox‐stable, coordinatively unsaturated FeII sites with tunable spin, ligand coordination, and catalytic behavior. The approach offers a general route to design defect‐functional materials through local coordination
Sonia Martínez‐Giménez, Alejandro Orellana‐Silla, Marta Galbiati, Efrén Navarro‐Moratalla, Luca Braglia, Sara Stolfi, José Antonio Real, Víctor Rubio‐Giménez, Sergio Tatay, Carlos Martí‐Gastaldo   +9 more
wiley   +1 more source

Application of NMR Logging in the Evaluation of Gulong Shale Oil

Cejing jishu
Gulong shale oil reservoir has a high clay content, complex pore structure, and developed micro-nano pore throats and micro fractures. It is difficult to evaluate the characterization of reservoir pore structure, physical properties, and oil content ...
CHEN Longchuan, ZHANG Zhaoqian, ZHENG Jiandong, WANG Chunyan, ZHU Jianhua, WANG Wenjuan, GAO Jifeng   +6 more
doaj   +1 more source

Polyimide‐Linked Hexaazatriphenylene‐Based Porous Organic Polymer with Multiple Redox‐Active Sites as a High‐Capacity Organic Cathode for Lithium‐Ion Batteries

Advanced Materials, EarlyView.
A high‐capacity polyimide‐linked porous organic polymer (HAT‐PTO) incorporating numerous redox‐active centers is synthesized via a hydrothermal reaction, delivering a high theoretical capacity of 484 mAh g−1. In situ hybridization with carboxyl‐functionalized multiwalled carbon nanotubes enhances conductivity and stability, achieving 397 mAh g−1 at C ...
Arindam Mal, Jonathan Caroni, Asia Patriarchi, Olivera Luzanin, Rafael Ramos, Jan Bitenc, Manuel Melle‐Franco, Manuel Souto   +7 more
wiley   +1 more source

Structural characterization of C-13-enriched humins and alkali-treated C-13 humins by 2D solid-state NMR [PDF]

, 2015
Humin by-products are formed during the acid-catalyzed dehydration of carbohydrates to bio-based platform molecules, such as hydroxymethylfurfural and levulinic acid. The molecular structure of these humins has not yet been unequivocally established.
Baldus, Marc, Koers, Eline J., Weckhuysen, Bert M., Weingarth, Markus, Bruijnincx, Pieter C. A., van Zandvoort, Ilona   +5 more
core  

COFs on MOFs: Layer‐by‐Layer Synthesis of MOF@COF Nanoparticles with Synergistic Adsorption

Advanced Materials, EarlyView.
A layer‐by‐layer strategy enables the growth of crystalline covalent organic framework (COF) shells on metal–organic framework nanoparticles, creating core–shell structures with tunable porosity. Ordered interstitial mesopores are formed during shell growth, which are connected with the COF's intrinsic micropores, thereby enhancing water sorption. This
Ana Guillem‐Navajas, Lucía Torrico‐García‐Viso, Jose Antonio Suárez del Pino, Nekane Aramburu‐Merino, Pilar Segovia, Enrique G. Michel, Josep Puigmartí‐Luis, Enrique Velasco, Pedro Tarazona, Daniel Maspoch, David Rodríguez‐San‐Miguel, Félix Zamora   +11 more
wiley   +1 more source

SitosterolBeta 400MHz CDCl3 NMR data

NMR data for Beta-Sitosterol Contains: 1D: 1H, 13C 2D: COSY, HSQC, HMBC as raw NMR data in JEOL format, and jdx ...
Pauli, Guido, Chen, Shao Nong, Youn, Isoo, Simmler, Charlotte, Bisson, Jonathan   +4 more
core   +1 more source

(-)-alpha-Pinene 60/400/600/900 MHz in CDCl3 NMR data

, 2019
NMR data for (-)-alpha-pinene contains: 1H NMR acquired at 60 MHz, as well as 1D: 1H,13C 2D: COSY, HSQC and HMBC acquired 400 MHz, as well as 1D: 1H,13C 2D: HSQC and HMBC acquired 600 MHz, as well as 1D: 1H 2D: COSY acquired 900 MHz in ...
Lankin, David, Pauli, Guido, Kim, Seon Beom, Chen, Shao Nong, Ray, Joseph, Achanta, Prabhakar, Simmler, Charlotte, Bisson, Jonathan   +7 more
core   +1 more source