Results 81 to 90 of about 15,609 (285)

Metastable Polymers for Circular 3D Printing

open access: yesAdvanced Materials, EarlyView.
3D‐printed polymers are usually permanent and hard to recycle. Here, metastable polymers are designed to fall apart on demand. A chemical trigger unzips the printed material back into its original building blocks within minutes at room temperature.
Johannes Markhart   +2 more
wiley   +1 more source

Electropolymerized Aptasensor for Femtogram‐Level Cytokine Detection

open access: yesAdvanced Materials, EarlyView.
Electropolymerization of 3‐amino‐ʟ‐tyrosine creates ultrathin, smooth, and chemically robust pALT nanofilms with accessible carboxyl functionalities for direct aptamer immobilization. Integrated with fiber‐optic SPR and OECT platforms, these interfaces enable IL‐6 detection down to 100 fg mL−1 and provide a versatile route to bioelectronic sensing ...
Jiyao Yu   +7 more
wiley   +1 more source

Improving gasoline quality produced from MIDOR light naphtha isomerization unit

open access: yesEgyptian Journal of Petroleum, 2017
Isomerization process became one of the best gasoline production sources, as it gives a high octane product while saving environment from pollution impacts.
M.F. Mohamed   +3 more
doaj   +1 more source

Esterified Cholesterol Conjugates Enable LNP‐Mediated mRNA Delivery to the Blood–Brain Barrier Following Intravenous Administration

open access: yesAdvanced Materials, EarlyView.
A cholesterol‐conjugated lipid library enabled the identification of a ligand‐free LNP platform for efficient mRNA delivery to brain endothelial cells via systemic administration. This platform achieves selective BBB targeting without disrupting barrier integrity, and enables modulation of neuroinflammation and vascular function without requiring trans‐
Zeru Tian   +7 more
wiley   +1 more source

Simplified methodology to determine breast milk retinol concentrations

open access: yesJournal of Lipid Research, 2002
The impact of a nutritional intervention trial on vitamin A status can be evaluated by measuring the total vitamin A concentration in breast milk both before and after the intervention. Because breast milk contains a spectrum of retinyl esters as well as
Sherry A. Tanumihardjo   +1 more
doaj   +1 more source

Upscaling the Fabrication of Rod‐Shaped Microgels: A Microfluidic Method Combining Step‐Emulsification With Consecutive Droplet Confinement in Parallelized Microchannels

open access: yesAdvanced Materials, EarlyView.
A microfluidic method is presented which enables parallelized fabrication of rod‐shaped microgels, based on step‐emulsification (SE) droplet generation and subsequent droplet distribution and confinement, combined in a single device. Microgel rods are fabricated in parallel at different flow rates based on two light‐mediated crosslinking chemistries ...
Matthias Mork   +5 more
wiley   +1 more source

[2,3]-Sigmatropic rearrangement with [1.1.1]propellane

open access: yesNature Communications
The most established reactivity of [1.1.1]propellane involves addition reactions at the bridge C-C bond, resulting in the formation of bicyclo[1.1.1]pentane derivatives.
Suparnak Midya   +2 more
doaj   +1 more source

Symmetric Assembly of a Sterically Encumbered Allyl Complex: Mechanochemical and Solution Synthesis of the Tris(allyl)beryllate, K[BeA′3] (A′ = 1,3-(SiMe3)2C3H3)

open access: yesInorganics, 2017
The ball milling of beryllium chloride with two equivalents of the potassium salt of bis(1,3-trimethylsilyl)allyl anion, K[A′] (A′ = [1,3-(SiMe3)2C3H3]), produces the tris(allyl)beryllate K[BeA’3] (1) rather than the expected neutral BeA’2.
Nicholas C. Boyde   +3 more
doaj   +1 more source

Two‐Way Shape Memory Polymer Composite Gripper for Adaptive Robotic Applications

open access: yesAdvanced Materials Technologies, EarlyView.
A two‐way shape memory polymer (SMP) composite is developed with intrinsic shape‐changing capability driven solely by temperature, eliminating external actuation loads. Embedding the SMP in a low‐stiffness elastomeric matrix enabled reversible transformations during heating and cooling cycles.
Aamna Hameed, Kamran Ahmed Khan
wiley   +1 more source

Light‐Enabled [2σ + 2π] Cycloadditions of Bicyclo[1.1.0]butanes and Alkenes by Ti‐Salen Photocatalysis

open access: yesChemistryEurope
Bicyclo[2.1.1]hexanes (BCHs) have emerged as promising three‐dimensional bioisosteres of benzenoids, garnering considerable interest from both synthetic and medicinal chemistry communities.
Jinping Xing   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy