Results 71 to 80 of about 127,195 (275)

Photoinduced Ring‐Opening Polymerization of N‐Carboxyanhydrides for the Preparation of Cross‐Linked Polypeptide Gels

open access: yesAngewandte Chemie, EarlyView.
We employ a photochemical approach for ring‐opening polymerization (ROP) of α‐amino acid N‐carboxyanhydride (NCA) monomers to prepare covalently cross‐linked synthetic polypeptide gels using a photobase and light, which offers significant advantages in the synthesis of polypeptides and holds great potential for applications requiring spatial and ...
Ana Kočman   +3 more
wiley   +2 more sources

Thermal Degradation and Corrosion of Amines for CO2 Capture [PDF]

open access: yes, 2015
This report examines the thermal degradation and corrosion of various amine solvents as they apply to amine scrubbing for CO2 capture. Amines were placed in stainless steel cylinders and heated in convective ovens to simulate the stripping conditions ...
Hatchell, Daniel
core  

Trans‐A2B2‐Type Metalloporphyrin‐Based Donor–Acceptor Covalent Organic Frameworks for Efficient Photocatalytic CO2 Cycloaddition to Aziridines

open access: yesAdvanced Science, EarlyView.
Two novel trans‐A2B2‐type porphyrin‐based D‐A type covalent organic frameworks (COFs), including metal‐free m‐DBPA‐COF and metallized m‐NiDBPA‐COF, have been successfully synthesized and under visible light‐assisted and mild conditions (1 atm CO2 with no heating required), m‐NiDBPA‐COF exhibits remarkable photocatalytic performance, achieving a ...
Ji Xiong   +5 more
wiley   +1 more source

Preparation of substituted hydrazines [PDF]

open access: yes, 1952
Thesis (M.A.)--Boston UniversityAlthough a large number of substituted hydrazines are known, the preparation of simple monoalkylhydrazines in a manner suitable for the large-scale economical synthesis has never been developed.
Briggs, Richard Maurice
core  

Synthesis of analogues of (E)-1-hydroxy-2-methylbut-2-enyl 4-diphosphate, an isoprenoid precursor and human γδ T cell activator [PDF]

open access: yes, 2008
(E)-1-Hydroxy-2-methyl-but-2-enyl 4-diphosphate (HMBPP) is an intermediate in the non-mevalonate pathway for the biosynthesis of isoprenoids and also serves as a very strong activator of human gamma delta T cells expressing V gamma 9V delta 2 receptors ...
Jomaa, Hassan   +5 more
core   +2 more sources

Quantitative Proteomics and CRISPR/Cas9 Editing Reveal UPR‐Mediated Control of Immunoglobulin Homeostasis in Hybridomas

open access: yesAdvanced Science, EarlyView.
BCR sequencing and subclone analysis correlated immunoglobulin (Ig) chain loss in dysfunctional hybridomas with disrupted monoclonal antibody homeostasis. Proteomics‐guided CRISPR/Cas9 editing revealed that the unfolded protein response (UPR) regulates aberrant Ig synthesis.
Rubing Zou   +9 more
wiley   +1 more source

Stereodivergent Synthesis of Three Contiguous Stereogenic Centers by Cu/Ir‐Catalyzed Borylallylation

open access: yesAngewandte Chemie, EarlyView.
An alkene borylallylation strategy enabled by cooperative Cu/Ir‐catalysis has been uncovered for accessing three contiguous stereogenic centres. This strategy is notable given the inherent challenges of constructing molecules with multiple stereocenters while maintaining high selectivity bearing diverse functional groups.
Suman Das   +2 more
wiley   +2 more sources

AI‐Directed 3D Printing of Hierarchical Polyurethane Foams

open access: yesAdvanced Science, EarlyView.
Digitally guided direct ink writing, combined with AI‐generated design, enables the fabrication of hierarchical polyurethane foams with tunable multiscale porosity. This approach produces architected foams featuring interconnected open‐cell networks and tailored mechanical properties, advancing the development of adaptive, high‐performance materials ...
Dhanush Patil   +15 more
wiley   +1 more source

Leveraging Diamines to Unlock the Mn‐MACHO Catalyst in the Reduction of CO2 to Methanol

open access: yesAngewandte Chemie, EarlyView.
CO2 hydrogenation to methanol using a Mn–MACHO catalyst was achieved without Lewis acid promoters, delivering TONs up to 45.2. Diamines, by driving a highly exergonic double amidation reaction, divert formate resting states toward the active catalyst. The correlation between ΔGamidation and methanol productivity enables the rational design of the amine
Mohamed E. A. Safy   +6 more
wiley   +2 more sources

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