Results 81 to 90 of about 180,433 (381)

Floatable artificial leaf to couple oxygen-tolerant CO2 conversion with water purification

open access: yesNature Communications
To enable open environment application of artificial photosynthesis, the direct utilization of environmental CO2 via an oxygen-tolerant reductive procedure is necessary.
Zhiyong Zhang   +11 more
doaj   +1 more source

Photochemistry of N-(selenoalkyl)-phthalimides. Formation of N, Se-heterocyclic systems [PDF]

open access: yes, 2015
A variety of N-(selenomethyl)alkyl-phthalimides (alkyl = -(CH2)n-; n = 2-5, 1a, b, d, e) and N-(selenobenzyl)propyl phthalimide (1c) were synthesized and their photochemistry was studied at λ = 300 nm.
Argüello, Juan Elias   +3 more
core   +1 more source

Tailoring the Properties of Functional Materials With N‐Oxides

open access: yesAdvanced Functional Materials, EarlyView.
The properties of materials bearing N‐oxide groups are often dominated by the polar N+─O− bond. It provides hydrophilicity, selective ion‐binding, electric conductivity, or antifouling properties. Many of the underlying mechanisms have only recently been discovered, and the interest in N‐oxide materials is rapidly growing.
Timo Friedrich   +5 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

Feature Papers in Photochemistry

open access: yesPhotochem
As the Special Issues “Feature Papers in Photochemistry” and “Feature Papers in Photochemistry II” conclude, it is crucial to acknowledge the remarkable progress and persistent gaps that continue to shape the journey of photochemistry research [...]
Marcelo I. Guzman
doaj   +1 more source

On the abundance of non-cometary HCN on Jupiter

open access: yes, 2010
Using one-dimensional thermochemical/photochemical kinetics and transport models, we examine the chemistry of nitrogen-bearing species in the Jovian troposphere in an attempt to explain the low observational upper limit for HCN.
Achterberg   +169 more
core   +1 more source

Room‐Temperature, High‐Resolution Soft Anisotropic Conductive Film for Electrical Interfacing in Stretchable Electronics

open access: yesAdvanced Functional Materials, EarlyView.
A UV‐crosslinkable soft anisotropic conductive film (ACF) provides high‐resolution, room‐temperature electrical interfacing. Upon UV exposure, azide crosslinkers within the ACF matrix form covalent bonds with a wide range of C–H‐containing materials, resulting in interfaces that are both mechanically durable and electrically reliable.
Jun Choi   +7 more
wiley   +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

Formation rates of complex organics in UV irradiated CH3OH-rich ices I: Experiments [PDF]

open access: yes, 2009
(Abridged) Gas-phase complex organic molecules are commonly detected in the warm inner regions of protostellar envelopes. Recent models show that photochemistry in ices followed by desorption may explain the observed abundances.
Garrod, R. T.   +3 more
core   +1 more source

Extraterrestrial prebiotic molecules: photochemistry vs. radiation chemistry of interstellar ices.

open access: yesChemical Society Reviews, 2019
In 2016, unambiguous evidence for the presence of the amino acid glycine, an important prebiotic molecule, was deduced based on in situ mass-spectral studies of the coma surrounding cometary ice.
Christopher R. Arumainayagam   +9 more
semanticscholar   +1 more source

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