Results 21 to 30 of about 317,807 (299)

Light-induced dynamic RGD pattern for sequential modulation of macrophage phenotypes

open access: yesBioactive Materials, 2021
Due to the critical roles of macrophage in immune response and tissue repair, harnessing macrophage phenotypes dynamically to match the tissue healing process on demand attracted many attentions. Although there have developed many advanced platforms with
Yilun Luo   +4 more
doaj   +1 more source

Iridium-Catalyzed Silylation of Five-Membered Heteroarenes: High Sterically Derived Selectivity from a Pyridyl-Imidazoline Ligand. [PDF]

open access: yes, 2020
The steric effects of substituents on five-membered rings are less pronounced than those on six-membered rings because of the difference in bond angles. Thus, the regioselectivities of reactions of five-membered heteroarenes that occur with selectivities
Hartwig, John F   +3 more
core   +1 more source

Catechol-Functional Chitosan/Silver Nanoparticle Composite as a Highly Effective Antibacterial Agent with Species-Specific Mechanisms

open access: yesScientific Reports, 2017
In this study, silver nanoparticles (Ag NPs) coated with catechol-conjugated chitosan (CSS) were prepared using green methods. Interestingly, we uncovered that CSS-coated Ag NPs (CSS-Ag NPs) exhibited a higher toxicity against gram-negative Escherichia ...
Xiaofei Huang   +4 more
doaj   +1 more source

Synthesis and late-stage functionalization of complex molecules through C-H fluorination and nucleophilic aromatic substitution. [PDF]

open access: yes, 2014
We report the late-stage functionalization of multisubstituted pyridines and diazines at the position α to nitrogen. By this process, a series of functional groups and substituents bound to the ring through nitrogen, oxygen, sulfur, or carbon are ...
Fier, Patrick S, Hartwig, John F
core   +3 more sources

Precise synthesis of sulfur-containing polymers via cooperative dual organocatalysts with high activity

open access: yesNature Communications, 2018
Sulfur-containing polymers are useful commodities, but there is still a big challenge to produce such polymers in a controlled fashion. Here the authors show a metal-free living copolymerization between carbonyl sulfide and epoxides via cooperative ...
Cheng-Jian Zhang   +4 more
doaj   +1 more source

The differentiation of a function of a function [PDF]

open access: yesBulletin of the American Mathematical Society, 1923
If z is a function of y having a differential coefficient at a certain point, and y is a function of x having a differential coefficient at the corresponding point, then z is a function of x having a differential coefficient at that point, and this differential coefficient is given by the formula
openaire   +3 more sources

Manipulation of the through‐space interactions in diphenylmethane

open access: yesSmart Molecules, 2023
Through‐space interaction (TSI) has been proven to play an important role in the newly emerging clusteroluminescence (CL) phenomenon. However, it is still a big challenge to manipulate the TSI at the molecular level due to the unclear relationship ...
Weihao Tu   +9 more
doaj   +1 more source

Vapor phase surface functionalization under ultra violet activation of parylene thin films grown by chemical vapor deposition [PDF]

open access: yes, 2010
Various reactive gas phase treatments have been investigated as surface functionalization dry processes with the goal to improve the wettability of parylene C films, keeping good optical properties in the visible range. The films were grown on different
Maury, Francis   +2 more
core   +2 more sources

On the band functions and Bloch functions

open access: yesTurkish Journal of Mathematics, 2023
In this paper we consider the continuity of the band functions and Bloch functions of the differential operators generated by the differential expressions with periodic matrix coefficients.
openaire   +4 more sources

Bromophenyl functionalization of carbon nanotubes : an ab initio study [PDF]

open access: yes, 2012
We study the thermodynamics of bromophenyl functionalization of carbon nanotubes with respect to diameter and metallic/insulating character using density-functional theory (DFT).
Beaudin, Jason   +4 more
core   +2 more sources

Home - About - Disclaimer - Privacy