Results 151 to 160 of about 43,788 (301)

A Solvent‐Free Synthesis of Imidazo[1,5‐a]pyridines Using CCl4 as an Oxidant

open access: yesJournal of Heterocyclic Chemistry, EarlyView.
A solvent‐free synthesis of imidazo[1,5‐a]pyridines (Impys) using CCl4 as an oxidant reagent and DBU as the base is informed. An array of Impys derived from different benzylic, heteroaryl aldehydes and others was synthesized in moderate to good yields.
Alejandro Castillo‐Baltazar   +5 more
wiley   +1 more source

Poly(O‐Propargyl‐N‐Amino Carbamate), a Reactive Polymer to Underpin Biomedical Applications of Poly(acetylene)s

open access: yesMacromolecular Rapid Communications, EarlyView.
We report here a new methodology to prepare functional poly(acetylene)s under aqueous conditions. This methodology is underpinned by poly(O‐propargyl‐N‐amino carbamate) (P1), a reactive poly(acetylene) carrying acyl hydrazines. Thus, P1 reacts with aldehydes to give functional poly(acetylene)s, including cationic, hydrophobic, and sugar‐loaded poly ...
Tom Leigh   +8 more
wiley   +1 more source

Aliphatic Poly(Carbonate)s with Acid Responsive Release Mechanisms for Micellar Anti‐Tumor Drug Delivery

open access: yesMacromolecular Rapid Communications, EarlyView.
Micellar systems based on biodegradable aliphatic polycarbonates and acid‐responsive triggers enhance drug solubility, stability, and tumor‐selective release. This review covers micelles with acid‐cleavable drug linkages and those that disassemble via acid‐sensitive functionalities.
Adrian V. Hauck, Lutz Nuhn
wiley   +1 more source

Covalently Immobilized Lignin–Xanthene Conjugates for Persistent Surface Photochemistry and Self‐Sterilizing Interfaces Under Ambient Visible Light

open access: yesMacromolecular Rapid Communications, EarlyView.
Bio‐derived lignin–Eosin Y macromolecular networks are developed as visible‐light‐responsive self‐sterilizing coatings that generate reactive oxygen species without leaching. The spray‐coated photopolymerized surfaces exhibit durable antibacterial and antiviral activity under ambient light for extended periods, demonstrating a scalable and sustainable ...
Euna Oh   +7 more
wiley   +1 more source

Synthesis of Borneol‐Polymers as Fluorescent Sensors for Pollutant Detection

open access: yesMacromolecular Symposia, EarlyView.
ABSTRACT In this work, a borneol‐derived monomer was employed to synthesize two novel copolymers, poly(vinyl acetate‐co‐bornyl methacrylate) (CopBM‐1) and poly(p‐acryloyloxybenzaldehyde‐co‐bornyl methacrylate) (CopBM‐2), via radical copolymerization. Both copolymers demonstrated aggregation‐induced emission in DMF at concentrations exceeding 0.04 wt.%.
Viorica‐Elena Podasca   +2 more
wiley   +1 more source

Rapid Discovery of TiO2/ZnFe2O4/Cu Ternary Photocatalysts for Volatile Organic Compounds Degradation via High‐Throughput Screening Photogenerated Carriers Transfer Properties

open access: yesMaterials Genome Engineering Advances, EarlyView.
This study develops a high‐throughput screening method using carrier mobility as a key descriptor. Taking the TiO2/ZnFe2O4/Cu ternary photocatalytic system as an example, we rapidly identify high‐performance components for VOCs degradation, confirm that the performance trends of thin‐film catalysts match those of their powder counterparts with the same
Tao Liang   +7 more
wiley   +1 more source

Differentiation of Plant and Animal‐Derived Cholesterol Using irm‐13C NMR and IRMS

open access: yesMagnetic Resonance in Chemistry, EarlyView.
Determining and certifying the origin of ingredients, starting materials, and excipients used in manufactured goods like cosmetics and medicines can be difficult. In this report, we describe a robust approach for identifying the origin of cholesterol, a component of myriad consumer products using irm‐13C NMR and IRMS to differentiate plant versus ...
Anika M. Singh   +3 more
wiley   +1 more source

Crystalline Poly(L‐Lactic Acid) Nanoparticles via Nonsolvent‐Induced Cascade Phase Separation

open access: yesJournal of Polymer Science, EarlyView.
Water is used as the nonsolvent to induce liquid/liquid phase separation (LLPS) of poly(L‐lactic acid) (PLLA)/propylene carbonate solution and PLLA crystallization. Due to the two levels of cascade LLPS coupled with confined PLLA crystallization, three types of polymeric nanoparticles, including PLLA single crystals, Ouzo crystalsomes, and sheaf‐like ...
Niloofar Esmati   +3 more
wiley   +1 more source

Removal of Benzaldehyde from Methanol Using Alkoxyamine Functionalized Silica Gel

open access: yes, 2008
Alkoxyamines (RONH2) react readily with aldehydes and ketones to form stable oxime ethers, and, thus are expected to be excellent scavengers of these compounds. We installed alkoxyamines on silica gel surface to remove benzaldehyde from methanol.
Pruitt, Carrie Jo   +4 more
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