Results 71 to 80 of about 49,383 (312)

Synthesis, Characterization and Docking Study of Novel Pyrimidine Derivatives as Anticancer Agents

open access: yesIndonesian Journal of Chemistry, 2020
New compounds 5 and 9 using DNA bases e.g. Adenine 1 and Guanine 6 derivatives have been synthesized. The use of simple methods to synthesize compounds 5 and 9 were done using pyrimidine as an alternative DNA base ring.
Manal Mohamed Talaat El-Saidi   +5 more
doaj   +1 more source

Thiolated Polymers in 3D Bioprinting: Control of Gelation

open access: yesAdvanced Materials, EarlyView.
Thiolated polymers are established as programmable bioinks for 3D bioprinting, integrating versatile crosslinking chemistries with redox‐responsive control. This work demonstrates how molecular design and external triggers define gelation kinetics, printability windows, and structural fidelity, enabling stable, high‐resolution constructs and advancing ...
Soheil Haddadzadegan   +2 more
wiley   +1 more source

Effect of Genipin Crosslinking on the Cellular Delivery of Gelatin Nanocarriers Using Curcumin as a Payload

open access: yesInternational Journal of Biomaterials
Gelatin-based nanoformulations have received special attention for drug delivery applications because of their regulatory acceptability. A thorough understanding of the factors controlling the interaction of gelatin nanocarriers with cellular systems is ...
Ram Pada Das   +4 more
doaj   +1 more source

Emerging Areas in Atmospheric Photochemistry

open access: yes, 2014
Sunlight is a major driving force of atmospheric processes. A detailed knowledge of atmospheric photochemistry is therefore required in order to understand atmospheric chemistry and climate.
Bartels-Rausch, Thorsten   +7 more
core   +1 more source

Chemical and Dynamical Processes in the Atmospheres of I. Ancient and Present-Day Earth, II. Jupiter and Galileo Satellite, III. Extrasolar “Hot Jupiters” [PDF]

open access: yes, 2006
When exposed to stellar UV radiation, chemical processes will be governed not only by temperature/pressure but also the spectrum of the incoming dissociative photon flux; the system will approach kinetic, or photochemical, equilibrium, instead of ...
Liang, Mao-Chang
core   +1 more source

Additive Manufacturing of Ordered Polymer Nanostructures

open access: yesAdvanced Materials, EarlyView.
A new 3D printing strategy, Polymerization‐Induced Arrangement of Nanostructures with Order‐tunability (PIANO), enables the formation of ordered nanostructures in polymer materials by enhancing chain mobility during photopolymerization, overcoming the kinetic arrest that leads to disordered morphologies in the conventional Polymerization‐Induced ...
Di Wu   +6 more
wiley   +1 more source

Solar-driven direct coupling of atmospheric CO2 with ammonia for urea synthesis

open access: yesNature Communications
Current CO2 utilization depends on high-purity CO2, necessitating energy-intensive capture and purification from air. Herein, we present a practical system that selectively converts atmospheric CO2 with ammonia into urea using solar energy as the sole ...
Zhiyong Zhang   +10 more
doaj   +1 more source

Tailoring of organic dyes with oxidoreductive compounds to obtain photocyclic radical generator systems exhibiting photocatalytic behavior

open access: yesBeilstein Journal of Organic Chemistry, 2014
The combination of a dye which absorbs the photon, an electron acceptor and an electron donor leading to energy conversion through electron transfer, was the basis of the so called three-component systems.
Christian Ley   +4 more
doaj   +1 more source

Tyrosine 263 in Cyanobacterial Phytochrome Cph1 Optimizes Photochemistry at the prelumi-R→lumi-R Step

open access: yes, 2014
We report a low-temperature fluorescence spectroscopy study of the PAS-GAF-PHY sensory module of Cph1 phytochrome, its Y263F mutant (both with known 3D structures) as well as Y263H and Y263S to connect their photochemical parameters with intramolecular ...
Feilke, Kathleen   +7 more
core   +1 more source

Second‐Harmonic Hyper‐Mie Optical Activity Enables Closed‐Loop Chiral Photochemistry

open access: yesAdvanced Materials, EarlyView.
Nonlinear chiral photochemistry is demonstrated in CdTe/CdO nanohelices, where circularly polarized infrared light both drives and tracks photo‐oxidation via second‐harmonic scattering. This closed‐loop process reveals real‐time structural evolution, including shell fracturing and core exposure, accompanied by a transition from hyper‐Mie to hyper ...
Hoyeon Choi   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy